Journal articles: 'Coconut fibre'

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Katarpawar, Raghvendra. "Review on Strengthening the Characteristics of Concrete Using Oil Coated Coconut Fibre." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 30, 2021): 3844–50. http://dx.doi.org/10.22214/ijraset.2021.35954.

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Sustainability is a widely acknowledged concept in modern day construction scenario. Although the construction industry is transforming in a substantial way in terms of the material used and the equipment used, the construction cost has risen steeply along with the worse impact on the environment due to this it has resulted in the acceptance of method like the use of natural fiber for example Coconut fibre for improving the strength of concrete. Coconut fiber is easily and widely available in abundance, which makes it fairly sustainable as form of reinforcement material in concrete. The use of coconut fibre as in form of reinforcement has also emerged as new source of income for the coconut producer. In addition, it can also be seen as a new effective way for the discarding of coir mattress wastage. The major problem of coconut fibre i.e. high water absorption rate of the fibre can be reduced to certain extent by coating the fibres with appropriate oil. In addition to this, the fibres which are naturally occurring is also ecologically sustainable and can lower the global carbon track effectively. This study aims to analyse the difference in strength of coconut fibre (processed fibres coated with oil and oil raw fibres coated with oil) reinforced concrete at various fibre contents and to collate it with the traditional concrete. The different strength aspects which are analysed in this study are the tensile, compressive and flexural strength of the concrete reinforced with coconut fibre at different percentages like 4%, 5% & 6% by the weight of cement of fibre. The optimum percentage of the raw fibre meshes and processed fibre were found and the optimum percentage of super-plasticizer required for the desired workability was also examined.

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Godwin, G., and K. Umanath. "Flexural, Tensile and Impact Properties of Alkali Treated Coir Fibre Composites Prepared by Compression Molding Technique." Applied Mechanics and Materials 766-767 (June 2015): 90–95. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.90.

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Polymeric materials reinforced with synthetic fibres such as glass provide advantage of high stiffness and high strength to weight ratio. Despite these advantages, the widespread use of synthetic fibre-reinforced polymer composite has a tendency to decline because of their high-initial cost and most importantly their adverse environmental impact. In this work, four different composites are prepared with untreated coconut fibres, NaOH mercerized coconut fibres, KOH mercerized coconut fibres and CSM glass fibres. A lot of studies are done earlier on NaOH mercerized coconut fibre composites. But, no studies are done specifically for KOH mercerized coconut fibre composites. So, KOH mercerized coconut fibre composites are prepared in this study. General purpose polyester resin is used for preparing all the compsites. The mechanical properties of composites are studied using the flexural test, impact test and tensile test. The mechanical properties of KOH mercerized coconut fibre composites are studied and compared with the mechanical properties of NaOH mercerized coconut fibre composites, untreated coconut fibre composites and CSM glass fibre composites.

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Bamigboye, Gideon, Ben Ngene, Omotolani Aladesuru, Oluwaseun Mark, Dunmininu Adegoke, and Kayode Jolayemi. "Compressive Behaviour of Coconut Fibre (Cocos nucifera) Reinforced Concrete at Elevated Temperatures." Fibers 8, no. 1 (January 1, 2020): 5. http://dx.doi.org/10.3390/fib8010005.

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Fire outbreaks in buildings have been a major concern in the world today. The integrity of concrete is usually questioned due to the fact that after these fire outbreaks the strength of the concrete is reduced considerably. Various methods have been adopted to improve the fire resistance property of concrete. This study focused on the use of coconut fibre to achieve this feat. In this study, varying percentages of treated and untreated coconut fibres were incorporated into concrete and the compressive strength was tested for both before heating and after heating. The percentages of replacement were 0.25, 0.5, 0.75 and 1% fibre content by weight of cement. Concrete cubes that had 0% fibre served as control specimens. After subjecting these concrete cubes to 250 °C and 150 °C for a period of 2 h, the compressive strength increased when compared to the control. The compressive strength increased up to 0.5% replacement by 3.88%. Beyond 0.5% fibre, the compressive strength reduced. Concrete having coconut fibre that had been treated with water also exhibited the highest compressive strength of 28.71 N/mm². It is concluded that coconut fibres are a great material in improving the strength of concrete, even after it was exposed to a certain degree of elevated temperature.

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Ali, Majid. "Use of coconut fibre reinforced concrete and coconut-fibre ropes for seismic-resistant construction." Materiales de Construcción 66, no. 321 (January 15, 2016): e073. http://dx.doi.org/10.3989/mc.2016.01015.

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Prakash, Ramaiah, Rajagopal Thenmozhi, Sudharshan N. Raman, and Chidambaram Subramanian. "Fibre reinforced concrete containing waste coconut shell aggregate, fly ash and polypropylene fibre." Revista Facultad de Ingeniería Universidad de Antioquia, no. 94 (October 17, 2019): 33–42. http://dx.doi.org/10.17533/10.17533/udea.redin.20190403.

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The aim of this study is to investigate the effect of polypropylene fibre addition into eco-concrete made with fly ash, an industrial by product, as partial cement replacement material, and coconut shell, an agricultural waste, as coarse aggregates, on the mechanical properties of the concrete. Two different mixes were developed, one with coconut shell only as coarse aggregates, and the other with the combination of both conventional aggregates and coconut shell as coarse aggregates. The cement content was replaced with class F fly ash at 10% by weight in the concrete mixes. The volume fractions of polypropylene fibres used in this study were 0.25%, 0.5%, 0.75% and 1.0%. The addition of polypropylene fibres slightly reduces the slump and density of coconut shell concrete. As the volume fraction of fibres increases, the compressive strength and modulus of elasticity of coconut shell concrete also increases by up to 0.5% of fibre volume fraction. The split tensile strength and flexural strength of coconut shell concrete were also enhanced with fibre addition. The addition of 0.75% and 1.0% volume fractions of polypropylene fibres slightly reduces compressive strength. Results of this study show that polypropylene fibres may be used in coconut shell concrete to improve the mechanical properties of the composite.

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Mohd Zamzani, Nabihah, Azree Othuman Mydin, and Abdul Naser Abdul Ghani. "Experimental investigation on engineering properties of lightweight foamed concrete (LFC) with coconut fiber addition." MATEC Web of Conferences 250 (2018): 05005. http://dx.doi.org/10.1051/matecconf/201825005005.

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In the last few years, there is emerging attention in using Lightweight Foamed Concrete (LFC) as a lightweight non-structural and semi-structural element in buildings to take advantage of its excellent insulation properties. Though, LFC has been noticed to have some disadvantages: considerable brittleness; results in low compressive and flexural strength, poor fracture toughness, poor resistance to crack propagation and low impact strength. Coconut fibre obtained from coconut husk, belonging to the family of palm fibres, is agricultural waste products obtained in the processing of coconut oil. In Malaysia, they are available in large quantities. Coconut fibre is extracted from the outer shell of a coconut. There are many general advantages of coconut fibres e.g. they are moth-proof, resistant to fungi and rot, provide excellent insulation against temperature and sound, not easily combustible, flame-retardant, unaffected by moisture and dampness, tough and durable, resilient, springs back to shape even after constant use, totally static free and easy to clean. Hence this study is intended to look into the potential of coconut fiber in enhancing the engineering properties of LFC. There are 5 engineering properties will be focused in this study which are flexural strength, splitting tensile strength, compressive strength, Poisson’s ratio and Poisson’s ratio toughness. Three densities of LFC of 800 kg/m3, 1100 kg/m3 and 1400 kg/m3 were cast and tested. The ratio of cement, sand and water used in this study was 1:1.5:0.49. Coconut fibers were used as additives at 0.12%, 0.24%, 0.36%, 0.48% and 0.60% by volume of the total mix. Test results indicated that the engineering properties of LFC strengthen with coconut fiber had increased soundly. Coconut fiber inclusion changes the post-peak response at the load-deflection curves for the samples, which modifies the failure mode and enhance the flexural strength, compressive strength and splitting tensile strength.

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Faria, Douglas Lamounier, Laércio Mesquita Júnior, Ana Angélica Resende, Daiane Erika Lopes, Lourival Marin Mendes, Maria Alice Martins, José Manoel Marconcini, and José Benedito Guimarães Junior. "Physical and mechanical properties of polyurethane thermoset matrices reinforced with green coconut fibres." Journal of Composite Materials 54, no. 30 (July 1, 2020): 4841–52. http://dx.doi.org/10.1177/0021998320940023.

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Currently, the use of composites to replace parts made only with plastics has been gradually employed. The advantages of these composites are low cost, high availability of raw materials and good physical and mechanical properties. Thus, this work aimed at producing and characterizing composites produced with coconut fibre reinforced polyurethane matrices. The coconut fibres were studied as to their chemical constituents, aspect ratio, bulk density, pH, tensile properties, and surface SEM images. The composites were prepared using the hand lay-up process and four different concentrations of coconut fibre were evaluated: 30, 40, 50, and 60%. The composites were assessed as for water absorption after 20 days of immersion, bulk density, impact IZOD, tensile tests, and visualize the matrix-reinforcement interface using SEM. The electron micrographs showed a great deal of impurities on the surface of coconut fibres, such as greases, waxes, and gums, due to the high amount of extraction material (19.78%), which damages the adherence of the polymer onto the coconut fibre and, as observed, cause detachment between the reinforcement and the matrix. The tensile strength of the composites tended to increase as greater amounts of coconut fibres were added to the matrix. The averages were around 6.51 to 6.72 MPa for composites with 30 and 60% fibres, respectively. Therefore, coconut fibres can be considered as an alternative to synthetic fibres commonly used in composites, and they can be used at a ratio of 60% without prejudicing the properties of the composites, making them lighter and cheaper.

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., Suswati, Asmah Indrawati, and Deddi Prima Putra. "PENAPISAN LIMBAH PERTANIAN (SABUT KELAPA DAN ARANG SEKAM) DALAM PENINGKATAN KETAHANAN BIBIT PISANG BARANGAN BERMIKORIZA TERHADAP BLOOD DISEASE BACTERIUM DAN FUSARIUM OXYSPORUM F.SP. CUBENSE." JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA 15, no. 1 (March 2, 2015): 81. http://dx.doi.org/10.23960/j.hptt.11581-88.

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Agricultural waste screening (coconut fibre and chaff charcoal) in improving the resistance of Mychorrizae Barangan seedling to Blood diseases bacterium and Fusarium oxysporum f. sp. cubense. The application of soil and compost are very general in Barangan banana seedling. However, those media always contaminated by BDB and Foc propagul. This research was intended to examine the influence of planting media composition (soil, coconut fibre and chuff charcoal) in improving the resistance of Mychorrizae Barangan banana seedling to blood diseases bacterium dan Fusarium oxysporum f sp.cubense. Some experiments conducted in wirehouse using a randomized complete block design application of two subtracts for soil substitution included to either coconut fibre (A) or chuff charcoal (B) (v:v) completed by 6 treatments of each: A0 = 100% soil media, A1 = 50% soil + 50% chuff charcoal, A2 = 50% soil + 25% chuff charcoal + 25% sand, A3 = 25% soil + 50% chuff charcoal + 25% sand; A4 = 75% chuff charcoal + 25% sand, A5 = 100% chuff charcoal, B0 = 100% soil, B1 = 50% soil + 50 % chuff charcoal; B2 = 50% soil + 25 % coconut fiber + 25% sand, B3 = 25% soil +50% coconut fiber +25% sand; B4 = 75% coconut fiber + 25% sand, B5 = 100% coconut fiber. The soil generated from banana seedling area of Sempakata village that seriously infected BDB and Foc. The observation variables encompassed percentage of disease attack, density of BDB and Foc. population, period of pathogen incubation and measurement of Barangan seed and AMF colonization resistance development. The results indicated the planting of Mychorrizae Barangan banana seeds applied diminishing soil media as much as 25–100% substituted by chuff charcoal or coconut fiber increased the seed resistance of BDB and Foc.

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Abdullah, Abdul Hakim, Faris Firdaus Abdul Mutalib, and Muhd Faiz Mat. "Tensile and Fracture Toughness Properties of Coconut Spathe Fibre Reinforced Epoxy Composites: Effect of Chemical Treatments." Advanced Materials Research 1133 (January 2016): 603–7. http://dx.doi.org/10.4028/www.scientific.net/amr.1133.603.

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Natural fibres are considered as a potential replacement for man-made fibers in composite materials because of their advantages over other established materials. However, serious problem of natural fibres is their strong polar character which creates incompatibility with most polymer matrices. In present investigation, the effect of alkaline, silane and combination of both treatments is investigated. Tensile properties and fracture toughness of coconut spathe fibre for untreated and treated were evaluated. Samples were fabricated by using the hand layup process. Result indicated that silane treatment has achieved a better performance for the tensile test while there is none improvement fracture toughness was displayed by silane or alkaline treatment as compared to untreated fibres. The alkaline treatment showed to be harmful for fracture toughness of the coconut spathe fibre since the improved interfacial adhesion impaired the main energy absorption mechanisms. Keyword: Composites, Coconut Spathe Fibre, Alkaline and Silance Treatment

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Ngadiman, Norhayati, Masiri Kaamin, Aslila Abd. Kadir, Suhaila Sahat, Aziza Zaini, Siti Raihana Nor Zentan, Nur Ain Ahmad, and Wan Haizatul Aisyhah Wan Amran. "Panel Board From Coconut Fibre And Pet Bottle." E3S Web of Conferences 34 (2018): 01014. http://dx.doi.org/10.1051/e3sconf/20183401014.

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The rate of global deforestation and its impact on the environment has led particle board manufacture to search for alternative feedstock, especially in countries where wood is less available compared to other cellulosic natural product. Based on the properties of coconut fibre and PET bottle, these two materials can be recycle as raw material for manufacture of panel board. As for this study, the coconut fibre were used as the filler and PET bottle as outer lining of the panel board. Two types of coconut fibre were used which are grinding and un-grinding coconut fibre. At first, the coconut fibre are undergoes softening, grinding, drying and sieving process, while PET bottle was cleaning, shredding, sieving before compacted using hydraulic hot press machine. There are four types of testing that been carried out which are swelling, water absorption, Modulus of Elasticity (MOE) and Modulus of Rupture (MOR). The result show the conventional board has the highest value for MOE test, so it’s indicate that the conventional board is less strength from the coconut fibre board. As for water absorption test, the average water absorption of coconut fibre based panel board is less than conventional board. Overall, the coconut fibre board is better than conventional panel board because coconut fibre board are less swelling, has low water absorption, high modulus of rupture and low modulus of elasticity. Based on the finding, this coconut fibre panel board has potential as a stronger and long-lasting panel board than the conventional board in the market. Other than that, the panel also have their own aesthetic value since the recycled plastic bottle used as outer lining is colourful and giving aesthetic value.

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Abdul Kadir, Aeslina, Siti Noorhajar Mohd Zulkifly, Mohd Mustafa Al Bakri Abdullah, and Noor Amira Sarani. "The Utilization of Coconut Fibre into Fired Clay Brick." Key Engineering Materials 673 (January 2016): 213–22. http://dx.doi.org/10.4028/www.scientific.net/kem.673.213.

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Over the year, agricultural establishment produced many types of waste in its daily operation. Coconut fibre for example is one of the most abundant agricultural wastes produced in Malaysia. Despite the massive amount of the waste produced, the standards of waste management in Malaysia are still poor. The main purpose of this study is to focus on the potential of coconut fibre utilization into fired clay bricks. The objectives of this study are to determine the characteristics of coconut fibre, to identify the gas emissions during firing process from coconut fibre brick and to investigate the physical and mechanical properties of from coconut fibre (1%, 3% and 5%) incorporation into fired clay brick. All the bricks were fired in a furnace up to 1050°C at 1°C/min. The gas emissions that were measured are carbon monoxide (CO), carbon dioxide (CO2) and sulphur dioxide (SO2). Based on the three gases, the results showed that CO2 is the highest gas emission produced during the firing process. Physical and mechanical properties tested are total shrinkage, dry density and compressive strength. Results found that by adding different percentages of coconut fibre, most of the properties were complied with the standards except for the compressive strength of 5% of coconut fibre in clay brick. Therefore, the utilization of coconut fibre could be one of the alternative disposal methods for agriculture waste and it will also provide low-cost material for brick that produce adequate physical and mechanical properties.

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Raj, Shubham, Sher Mohammad, Rima Das, and Shreya Saha. "Coconut fibre-reinforced cement-stabilized rammed earth blocks." World Journal of Engineering 14, no. 3 (June 12, 2017): 208–16. http://dx.doi.org/10.1108/wje-10-2016-0101.

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Purpose This study aims to investigate the optimum proportion of coconut fibre and cement suitable for rammed earth wall construction. Coconut fibres and cement can be easily incorporated into the soil mixture which adds strength and durability to the wall. This paper highlights the salient observations from a systematic investigation on the effect of coconut fibre on the performance of stabilized rammed earth blocks. Design/methodology/approach Stabilization of soil was done by adding Ordinary Portland Cement (2.5, 5.0, 7.5 and 10.0 per cent by weight of soil), whereas coconut fibre in length about 15 mm was added (0.2, 0.4, 0.6, 0.8 and 1.0 per cent by weight of soil) as reinforcement. Thirty types of mixes were created by adding different proportions of cement and fibre to locally available soil and compacting the mix at constant compaction energy in three layers with Proctor rammer. Findings Samples were tested for compressive strength and tensile strength, and failure patterns were analysed. The use of cement and fibre increases ultimate strengths significantly up to an optimum limit of 0.8 per cent fibre content, provides a secondary benefit of keeping material bound together after failure and increases residual strength. Benefits of fibre reinforcement includes both improved ductility in comparison with raw blocks and inhibition of crack propagation after its initial formation. Originality/value After analysing the results, it is recommended to use 0.8 per cent fibre and 5-10 per cent cement by weight of soil to achieve considerable strength. This research may add a value in the areas of green and sustainable housing, waste utilization, etc.

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Kao-Walter, Sharon, Etienne Mfoumou, and Maurice Ndikontar. "Mechanical Properties and Life-Cycle Sustainability Aspects of Natural Fibre." Advanced Materials Research 347-353 (October 2011): 1887–93. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1887.

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In order to understand the basic definition of the natural material, references of recently published articles were studied. From these articles, the definition of different terms like renewable material, recyclable material, biodegradable material, sustainable material and finally natural material were collected. Furthermore, a classification of natural fibre was drawn. One of these natural fibres - the coconut was chosen for a more detail analysis in mechanical point of view. An integrated method to analyse the sustainability of the coconut fibre as one of the blend components in building construction will be suggested. Finally, several uses of the fibre are reviewed.

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Purwanto, Djoko. "FINISHING KAYU KELAPA (Cocos nucifera, L) UNTUK BAHAN INTERIOR RUANGAN." Jurnal Riset Industri Hasil Hutan 3, no. 2 (December 31, 2011): 32. http://dx.doi.org/10.24111/jrihh.v3i2.1193.

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Finishing of coconut wood use the polyurethane, melamine formaldehyde and ultran vernis with the spraying 1 times and 2 times. Research target for the change of performance of colour and fibre of coconut wood more interesting. Result of research indicate that the use of substance of finishing polyurethane, melamine formaldehyde and ultran vernis can change the colour and fibre. Before coconut wood done finishing have the black chocolate colour and fibre pattern rather dark. After doing finishing colour become the squeezing chocolate, fibre pattern rather look and flatten.Keywords: coconut wood, finishing, interior materi, bahan interior, polyurethane, melamine formaldehide, ultran vernis.

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Monsalve, Monica, Oscar Higuera, Pedro Estrada, Marlyn Orozco, and Cristian Pedraza. "Production of structural type mortars reinforced with coconut fibre (Coconuts nuciferas)." Contemporary Engineering Sciences 11, no. 85 (2018): 4211–18. http://dx.doi.org/10.12988/ces.2018.88394.

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Ali, Majid, and Nawawi Chouw. "Experimental investigations on coconut-fibre rope tensile strength and pullout from coconut fibre reinforced concrete." Construction and Building Materials 41 (April 2013): 681–90. http://dx.doi.org/10.1016/j.conbuildmat.2012.12.052.

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Anita Das Ravindranath and Saroi Bhosle. "BACTERIAL CONSORTIA FOR RETTING OF COCONUT HUSKS IN TANKS." CORD 15, no. 01 (June 1, 1999): 34. http://dx.doi.org/10.37833/cord.v15i01.322.

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A bacterial consortium developed on coconut husk leachates could ret coconut husk steeped for retting in rap water in a period of three months. The quality of the coir fibre obtained was comparable to traditionally retted fibre. The consortia could also bestow a greater degree of softness to the mechanically extracted coir fibre. Coir extraction can therefore be practiced by supplying the consortia for retting of husk for production of fibre and enhance the commercial utilization of the husk in coconut growing regions of Asia.

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Crăciun, Andrei Lucian, and Camelia Pinca-Bretotean. "Advanced Materials with Natural Fibred Reinforced Aluminiu Composite for Automotive Brake Disc." Solid State Phenomena 254 (August 2016): 91–96. http://dx.doi.org/10.4028/www.scientific.net/ssp.254.91.

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The automotive brake disc is a device for slowing or stopping the motion of a wheel while it runs at a certain speed. The widely used brake disc material is cast iron which consumes much fuel due to its high specific gravity. To reduce automobile weight and improve fuel efficiency, the automotive industry has increased the use of aluminium in light vehicles in recent years. The aim of this paper is to develop new natural fibre reinforced aluminium composite for automotive brake disc.Different laboratory formulations were prepared with varying coconut fibre, friction modifiers, abrasive material and solid lubrificant using powder mettallurgy techique for the developement of new natural fibre reinforce aluminiu composites. The analysis led that natural coconut fibre is a potential candidate fiber or filler material for the automotive brake disc.

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Perera, S. A. C. N., H. D. M. A. C. Dissanayaka, H. M. N. B. Herath, M. G. M. K. Meegahakumbura, and L. Perera. "Quantitative Characterization of Nut Yield and Fruit Components in Indigenous Coconut Germplasm in Sri Lanka." International Journal of Biodiversity 2014 (August 17, 2014): 1–5. http://dx.doi.org/10.1155/2014/740592.

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Coconut (Cocos nucifera L.) is a tropical palm offering multiple uses. Conservation of coconut germplasm has been undertaken globally in view of its economic importance. This research was designed to evaluate nine Sri Lankan indigenous coconut germplasm representing the three varieties Typica, Nana, and Aurantiaca. Total annual nut yield and the weights of fresh nut, husked nut, split nut, and fresh and dry kernel were scored and analyzed with analysis of variance. The annual average number of bunches varied from 14.9 to 16.8 which is significantly higher than the generally accepted 12–14 bunches in tall coconuts. The high potential of phenotypes Ran thembili and Gon thembili for kernel production was revealed. The high potential of Gon thembili, Sri Lanka Tall, and Ran thembili to produce fibre was also identified. Phenotypes Ran thembili and Gon thembili displayed their potential as pure cultivars and as parents in hybridization. King coconut, Red dwarf, and Bodiri were shown to be suitable as beverage coconuts due to the high production of nuts, bunches, and the quantity of nut water. This study reiterated the importance of conservation and characterization of indigenous coconut varieties globally for their effective use in the genetic improvement of the coconut palm.

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Setiaji, Bambang, Ani Setyopratiwi, and Nahar Cahyandaru. "EXPLOITING A BENEFIT OF COCONUT MILK SKIM IN COCONUT OIL PROCESS AS NATA DE COCO SUBSTRATE." Indonesian Journal of Chemistry 2, no. 3 (June 9, 2010): 167–72. http://dx.doi.org/10.22146/ijc.21912.

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A research to know influence of mixing concentration of coconut water and sucrose concentration to coconut milk skim as nata de coco substrate has been conducted. The variation was taken from mixing coconut water (0%, 25%, 35% and 50% and 100% as control) and the sucrose concentration (0.5%, 1%, 1.5% and 2%). Coconut milk skim boiled before used as substrat, yielded a coconut protein (blondo). The result of research showed that coconut milk skim can be used as nata de coco substrate with mixing coconut water and sucrose addition, mixing 50 % concentration coconut water representing optimum concentration. The content of crude fibre nata was yielded by higher concentration of sucrose, while mixing concentration coconut water do not influence crude fibre content. Keyword: Coconut milk skim, substrate, nata de coco

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Owodunni, Amina Adedoja. "Flame-retardant properties of particleboard made from coconut fibre using modified potato starch as a binder." Journal of Physical Science 31, no. 3 (November 25, 2020): 129–43. http://dx.doi.org/10.21315/jps2020.31.3.10.

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This study seeks to evaluate the flame-retardant characteristics of experimental particleboard manufactured from coconut fibre using modified potato starch as a green binder. The coconut fibre was used as a replacement for the wood as a raw material in particleboard production. The adhesives used in the process were made by modifying potato starch with citric acid and glutardialdehyde. No flame-retardant additive was added during the processing, and this was done to evaluate the flame-retardant potential of the experimental coconut fibre-based particleboards. The limited oxygen index (LOI) test, the bomb calorimetry, the differential scanning calorimetry (DSC) and the dynamic mechanical analysis (DMA) were used to evaluate the thermal properties and flame retardancy rate of such particleboards. The result of the DMA showed that the coconut fibre-based particleboards had good storage modulus with heat. The bomb calorimeter and LOI results also supported the flame-retardant performance of the panels. Based on the evaluations, it could be prescribed that the coconut fibre particleboard made with citric acid modified potato starch (CAMPS) exhibited the best flame-retardant properties.

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Ali, Majid. "Seismic performance of coconut-fibre-reinforced-concrete columns with different reinforcement configurations of coconut-fibre ropes." Construction and Building Materials 70 (November 2014): 226–30. http://dx.doi.org/10.1016/j.conbuildmat.2014.07.086.

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K.D.P.P. Gunathilake. "Nutritional Composition of Dikiri Coconut." CORD 25, no. 2 (October 1, 2009): 7. http://dx.doi.org/10.37833/cord.v25i2.143.

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Dikiri, an abnormal type of coconut found mainly in the southern part of Sri Lanka, was analyzed for its proximate composition, dietary fiber, minerals, vitamin C and fatty acid profile. Pectin was isolated and characterized (moisture, ash, acetyl value, methoxyl value, equivalent value) from dikiri coconut. Dikiri coconut contains 38.91± 0.9%, 2.95 ± 0.2%, 58.21± 3.6%, 17.62 ± 0.2%, 6.63 ± 0.3% and14.59% dry matter, ash, crude fat, crude fibre and carbohydrate respectively. The main dietary fiber components of Dikiri coconut were pectin and hemicellulose while that of normal coconut was cellulose. Lignin content was significantly lower in the kernel of dikiri coconut(3.98±0.9) than normal coconut kernel(6.14±0.7%). Equivalent weight, methoxyl value, moisture, ash and acetyl value of dikiri pectin were 1052.7 ± 11.08, 8.72 ± 0.25, 85.8 ±1.65, 0.8 ± 0.04 and 0.09 ± 0.01 respectively. The main mineral found in dikiri was potassium. Vitamin C content of dikiri coconut was 2.32 mg/100g. The fatty acids composition of dikiri was similar to normal coconut and saturated fatty acids constituted nearly 90% of total fatty acids and lauric acid is the main fatty acid followed by myristic acid.

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Sambu, Mathan, Musli Nizam Yahya, Hanif Abdul Latif, Mohamed Nasrul Mohamed Hatta, and Mohd Imran bin Ghazali. "The Acoustical Characteristics Analysis on Different Type of Natural Fibres." Applied Mechanics and Materials 773-774 (July 2015): 242–46. http://dx.doi.org/10.4028/www.scientific.net/amm.773-774.242.

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Natural fibres are fibre that can be directly obtained from an animal, mineral, or vegetable sources. Recently natural materials are becoming a good alternative for synthetic material as they provide good health to a greener environment. This aim of this study to investigate and compared the acoustic characteristics of three natural fibres; Kenaf fibre(Hibiscus Cannabinus), Ijuk fibre(Arenga Pinnata), and Coconut coir fibre, where each material is qualified for acoustical absorption. During the processing stage, each fibre is reinforced with 60:40 ratio of pure latex separately. The fibres are then compressed after the pure latex treatment into circular samples, of 28 mm and 100 mm diameters respectively. The thickness of each sample is fixed at 50mm. The acoustical performances were evaluated by using an impedance tube instrument. This study also investigates the effect of air gap of 10mm and 50mm in the sound absorption performance. The results show that, all the three fibres have reached an optimum level of sound absorption value of more than 0.7. The frequency peak value of Kenaf is obtained in a range of 700 Hz – 800 Hz, while for coconut coir is at 1000 Hz – 1075 Hz frequency range. Only Ijuk has obtained the highest frequency range of 3200 Hz – 3400 Hz. The results demonstrate that these three fibres are a promising light and environment-friendly sound absorption material as they are ready to replace the common synthetic fibre.

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P. Chandy Mathew. "RUBBERISED COIR INDUSTRY - AN INTRODUCTION." CORD 4, no. 01 (December 1, 1988): 34. http://dx.doi.org/10.37833/cord.v4i01.211.

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The coconut palm is one of the versatile products of nature. Almost all parts of the tree are put to use by man. The uses of coconut kernel, shell, husk, trunk, leaves, sap etc., are well known and are therefore not described here. In this paper only one aspect of utilisation of coconut namely coconut fibre or coir for production of rubberised fibre is discussed in some detail. In major coconut producing areas more attention is given to utilisation of coconut kernel as this represents the most valuable portion of the coconut tree. It is therefore quite natural that most people concemed with coconut production and processing are less familiar with the by‑products of coconut. One such by‑product is rubberised coir which is a relatively capital intensive industry. In terms of "value addition" the production of rubberised coir is one of the top industries in the coconut and by‑product industries. This paper is an introduction to some aspects of rubberised coir.

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Elijah, Aniekpeno Isaac, Victor Ephraim Edem, and Item Victor Uduhabasi. "Effect of extraction variables on the proximate composition of coconut milk." Croatian journal of food science and technology 11, no. 2 (November 29, 2019): 222–29. http://dx.doi.org/10.17508/cjfst.2019.11.2.11.

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To our knowledge, there seem to be no report on the effect of extraction variables on the proximate composition of coconut milk. In this study, response surface methodology (RSM) with a central composite design (CCD), consisting three factors (extraction time, extraction temperature and coconut meat particle size) was used to study the effect of process conditions on the proximate compositions of coconut milk. Results revealed that process variables significantly (p<0.05) affected the proximate compositions of coconut milk. The R2 values of ash, fibre and carbohydrate were 0.9244, 0.8822 and 0.8876 respectively, while that of fat and protein where 0.6048 and 0.6866, respectively. Results also indicated that moisture, ash, fat, protein, fibre and carbohydrate contents of coconut milk ranged from 75.40 to 81.97%, 1.03 to 4.3 %, 62.70 to 78.39%, 6.33 to 32.16%, 0.05 to 0.15% and 2.25 to 60.0%, respectively. The optimum conditions obtained for extraction of coconut milk with a desirability index of 75.30% were 16.27 min extraction time, 40 °C extraction temperature and < 1617 μm particle size of coconut meat. The estimated amount of moisture, ash, fat, protein, fibre and carbohydrate were; 79.03, 3.48, 73.82, 25.45, 0.16 and 29.34% respectively

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Raczyk, Marianna, Bartosz Kruszewski, and Dorota Michałowska. "Effect of Coconut and Chestnut Flour Supplementations on Texture, Nutritional and Sensory Properties of Baked Wheat Based Bread." Molecules 26, no. 15 (July 30, 2021): 4641. http://dx.doi.org/10.3390/molecules26154641.

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Wheat bread, produced by the single-phase method, is a common food consumed all over the world. Due to changes in lifestyle and nutritional trends, alternative raw materials are sought to increase the nutritional value and improve the taste of daily consumed products. Additionally, customers seek a wide variety of foods, especially when it comes to basic foods. Nuts, such as coconuts or chestnuts, might provide an attractive flavour with benefits to the nutritional quality. In this study, the effect of substituting wheat flour with coconut or chestnut flour (flour contribution level: 5, 10, 15, 30, 50% w/w), was evaluated in terms of the breads specific volume, texture, colour, nutritional composition, and dietary fibre fraction contents. Moreover, a sensory evaluation was conducted to assess potential consumer acceptance. Based on the consumer’s perception, the overall acceptance of bread with 15% w/w of coconut and chestnut flour was in privilege compared to the control sample. As a result, taking all of the tested parameters into account, the breads with 5, 10, and 15% supplementation of chestnut or coconut flour were still of good quality compared to the wheat bread and their fibre content was significantly higher.

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Fabbri, Kristian, Fabrizio Barbieri, and Francesca Merli. "Using natural fibre insulators on green roofs: some considerations." E3S Web of Conferences 197 (2020): 02015. http://dx.doi.org/10.1051/e3sconf/202019702015.

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This study focuses on the application of coconut fibre insulators, an insulating material rarely utilized in the Mediterranean context. Despite its undoubted thermal performance, some queries are related with of his thermo-hygrometric behavior. More precisely, during the use of coconut for covering building for realizing green roofs, which represent a technological solution often adopted in the case of sustainable buildings or nearly zero energy building. Green roofs represent a valid constructive solution with high thermal performances, adopted in existing and new buildings. This paper investigates the thermo-hygrometric behavior of the concrete and Cross Laminated Timbre slabs, insulated with coconut fibreboards (CF) such as an alternative synthetic insulator, referred to a series of different green roofs scenarios. The results show that coconut fibre insulations are equally comparable to natural and synthetic materials. Therefore, coconut fibre could represent a good chance for realization of green roof having high thermal performance and hygrothermal behavior in the same time. This material could be an alternative solution to the normal synthetic materials actually used, in a perspective of sustainable architecture.

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Hettiarachchi, Chirath, and Gobithas Thamarajah. "Effect of Surface Modification and Fibre Content on the Mechanical Properties of Coconut Fibre Reinforced Concrete." Advanced Materials Research 1159 (September 2020): 78–99. http://dx.doi.org/10.4028/www.scientific.net/amr.1159.78.

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In the past few decades, concrete has been the most widely used material for structural applications in the world and uses steel reinforcement as aide to meet the flexural, tensile and ductility demands required of concrete structures. Manufacturing of concrete and steel reinforced concrete structures is associated with millions of tons of carbon dioxide emissions and mineral waste. This activity is also responsible for the depletion of a large number of non-renewable resources. Reinforcing steel is also a high cost material, consumes a lot of energy in its production. Consequently, the use of natural fibres as an alternative for steel reinforcement is widely investigated, to promote the use of sustainable concrete structures. This study aims to investigate the effect on durability, flexural, compressive, tensile properties and workability of concrete by incorporating coir fibre at varying fibre content to find the fibre content which gives optimum results. The fibre contents used were 0%, 0.5%, 1.0%, 1.5% and 2.0% by weight of cement. Furthermore, the effect of modifying the surface of the coir fibres by alkali treatment (i.e. 5 wt.% NaOH solution) and coating the fibres with epoxy paint and polyurethane varnish on coir fibre reinforced concrete (CFRC) were also investigated. Tests conducted on the CFRC specimens included slump test and flexural, compressive and tensile strength tests. Water absorption and sorptivity tests were also conducted to investigate the durability. Slump (workability) and unit weight reduced with an increase in fibre content. The surface modification methods used, had resulted in an increased workability and a reduced unit-weight. A coconut fibre content of 1% produced the best combination of flexural, tensile and compressive properties. Water absorption and sorption rate per unit time, increased with an increase of coir fibre content. It is also found that epoxy paint and alkali treatment of the fibres has a positive effect on the mechanical strength properties and also the durability and workability of the CFRC specimens. However, polyurethane varnish coating had a detrimental effect on the mechanical strength properties of the CFRC specimens.

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Oyedeko, K. F. K., H. O. Opaleye, and G. O. Shonaike. "TENSILE PROPERTIES OF SURFACE TREATED COIR FIBRE REINFORCED POLYETHYLENE." Engineering and Technology Research Journal 3, no. 1 (March 16, 2018): 56–60. http://dx.doi.org/10.47545/etrj.2018.3.1.075.

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The need to pursue an environmentally safer future has prompted the researchers to look beyond the inorganic fibre-based composites and engage in putting more thought into the utilization of natural fibre-based polymer composites. Although inorganic fibres, such as glass and carbon have a lot of advantages but we can owe its declining use in recent years to high initial cost, non-biodegradability, non-renewability, high energy consumption in manufacturing process and adverse environmental impacts. Natural fibres however more than compensate for their poor compatibility with the matrix, inherent high moisture absorption rate with their positive attributes like low cost, low density, non-abrasivity, good thermal properties, enhanced energy recovery and bio degradability. This work is aimed at investigating the effect of alkali treatment and fibre load on the tensile properties and hardness properties of coir fibre reinforced polypropylene composites. Polypropylene (PP) was used as the matrix resin and coir fibre (CF) as the reinforcing agent. The brown coconut fibres were pulled out and extracted manually from the coconut husks. To ensure proper interaction between fibre and matrix material, the outermost wax layer of the coir was removed by soaking the coir in hot water. The coir fibres are then prepared for treatment with NaOH solution to improve its surface properties and provide better adhesion with the matrix after the removal of lignin and pectin from the surface of the fibre. The tensile properties indicated that both the strength and modulus increased with increasing fibre content. However, in this investigation, the maximum fibre content is 20%. It could have been more than this but we encountered processing problem. Alkaline treated samples had higher tensile properties than untreated samples. The hardness of the material is not significantly affected by the surface treatment.

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Othman, Mohd Hilmi, Sulaiman Hasan, and Md Zin Ibrahim. "The Effects of Water Content towards the Packaging Properties of Paper Made from Coconut Coir." Applied Mechanics and Materials 315 (April 2013): 161–65. http://dx.doi.org/10.4028/www.scientific.net/amm.315.161.

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This research is about an attempt to evaluate the effect of water contents towards the packaging properties of paper made from coconut coir, which was being processed manually through beating times method. The purpose of this investigation is to relate the composition of coconut fibre and water content with the tensile strength and tear factor. The composition starts from sample A, which has 90% of water and 10% of coconut fibre. The sample continues with 10% decreasing content of water and 10% increment of coconut coir. Base on tensile test and tear test results, graphs were plotted and it shows sample D, with 60% of water and 40% of coconut coir has produced the highest tensile strength, breaking length and tensile index, with the value of 1020.6 N/m, 422.8 m and 4.1450 Nm/g respectively. On the other hand, sample A produced the highest tear factor, with the value of 92.7 g/mm2. As a conclusion, these packaging properties are good enough to become guidance in paper manufacturing industry, as well as to support the application of coconut coir fibre as an alternative packaging material in the future.

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Mapa, Ranjith B. "Coconut Fibre: A Biodegradable Soil Erosion Control." Biological Agriculture & Horticulture 13, no. 2 (January 1996): 149–60. http://dx.doi.org/10.1080/01448765.1996.9754774.

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Siriwardhana, A. C. P. K. "Computer aided length estimation of coconut fibre." Indian Journal of Science and Technology 4, no. 9 (September 20, 2011): 1036–41. http://dx.doi.org/10.17485/ijst/2011/v4i9.13.

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., Bharati Raj. "PET FIBRE REINFORCED COCONUT SHELL CONCRETE (PFRCSC)." International Journal of Research in Engineering and Technology 05, no. 32 (November 25, 2016): 211–15. http://dx.doi.org/10.15623/ijret.2016.0532031.

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Basu, Gautam, Leena Mishra, Seiko Jose, and Ashis Kumar Samanta. "Accelerated retting cum softening of coconut fibre." Industrial Crops and Products 77 (December 2015): 66–73. http://dx.doi.org/10.1016/j.indcrop.2015.08.012.

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Mohd Ayob, Nurul Atiqah, Mansur Ahmad, and Nurul Nadia Mohd Khairuddin. "Water Resistance and Tensile Strength of High Density Polyethylene (HDPE) Composites." Advanced Materials Research 1134 (December 2015): 34–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1134.34.

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In this paper, three type of natural-fibre reinforced polyethylene were produced. They are the coconut coir reinforced polyethylene (RPCC), kenaf reinforced polyethylene (RPKC) and bamboo reinforced polyethylene (RPBC). Water absorption test, thickness swelling test and tensile test of the different natural fibre composites were carried-out. The mass of HDPE and natural fibre were based on percentage of filler loading. Each board types were produced with two fibre ratios which are at fourty percent and thirty percent. The preparation of the test sample is according to ASTM D1037 and ASTM D638. The tensile modulus of elasticity, tensile stress, water absorption and thickness swelling of kenaf and bamboo reinforced polyethylene composites were found to increase with increasing fibre weight fraction. Kenaf and bamboo composites showed compatible result for tensile stress and tensile modulus of elasticity while coconut coir appears to be otherwise. However, coconut coir fibre composites displayed comparable results to kenaf and bamboo for both water and thickness swelling. There were significant differences in both tensile properties and the percentage of the water absorption among composites.

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ANITA DAS RAVINDRANATH. "PROCESSING OF COIR A BIOLOGICAL APPROACH TO RETTING OF COCONUT HUSKS." CORD 7, no. 02 (June 1, 1991): 34. http://dx.doi.org/10.37833/cord.v7i02.253.

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White coir fibre is extracted from coconut husks after 'retting' for a period varying between six to ten months depending upon several environmental factors. With a view to explore the possibility of reducing the prolonged period required for retting and improving the quality of the coir fibre a field study was conducted at Azhikode in the N. Parur regions of Kerala which is a 'poor'* retting area. Selected strains of efficient pectin and phenol degrading bacterial cultures were inoculated into pits containing lots of husks soaked for retting. Samples of husks were analysed at regular intervals for details of degradation of the husk constituents holding the individual fibres together. It was observed that inoculation of the bacterial strains could shorten the period of retting by two and a half months and yield an improved quality of fibre with respect to colour and texture. The detaiis of the experimental field study are presented in this paper.

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Silva, Richardson B. G. da, Magali R. da Silva, and Danilo Simões. "Substrates and controlled-release fertilizations on the quality of eucalyptus cuttings." Revista Brasileira de Engenharia Agrícola e Ambiental 18, no. 11 (November 2014): 1124–29. http://dx.doi.org/10.1590/1807-1929/agriambi.v18n11p1124-1129.

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To produce cuttings with quality, the most appropriate nutritional management strategies should be sought to reduce wastage of fertilizer, while accounting for the characteristics of each substrate. This study evaluated the effect of substrates and doses of controlled-release fertilizer on the quality of Eucalyptus grandis Hill ex Maiden x Eucalyptus urophylla S. T. Blake cuttings. The substrates consisted of several mixtures: vermiculite+carbonized rice chaff+coconut fibre (1:1:1); vermiculite+coconut fibre (1:1); and vermiculite+carbonized rice chaff (1:1). These mixtures were added to 2, 4, 6 and 8 kg of controlled-release fertilizer per cubic meter of substrate. The substrates that do not support root development and have lower water retention, independently of the dose of controlled-release fertilizer, reduce the quality of the root system. For substrates with proper values of water retention, such as vermiculite+coconut fibre (1:1) and vermiculite+carbonised rice chaff+coconut fibre (1:1:1), the utilization of dose 2 kg of controlled-release fertilizer to each cubic meter is enough to promote cuttings with greater quality of the root systems and proper heights and stem diameters.

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Azmi, M. A., Hasan Zuhudi Abdullah, and Maizlinda Izwana Idris. "Sandwich Composites of Glass Fibre Panel and Polyurethane/Coconut Coir Foam Core (GFRP - PUC)." Key Engineering Materials 471-472 (February 2011): 391–96. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.391.

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In this work, sandwich composite properties were investigated by addition of coconut coir (CC). Fibres in the polyurethane foam cores ranges from 0 to 20 wt.%. Glass fibre reinforced epoxy panels were used as a skin and polyurethane foam as a core, these materials adhesively bonded to keep the whole structure attached with each other. Sandwich composite skins and core-skin bonding were attained via adhesive bonding technique. While polyurethane foam reinforced by coconut coir fibres were manufactured by using one shot process and polyurethane moulding method. Sandwich composite panels with different coir fibres compositions were subjected to the density test, weight per area test and flexural testing in order to investigate their physical and mechanical properties. From the experimental results and analysis, it was found that the sandwich composites with 10 wt.% of coir fibres offer higher mechanical properties.

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Trinidad, Trinidad P., Divinagracia H. Valdez, Anacleta S. Loyola, Aida C. Mallillin, Faridah C. Askali, Joan C. Castillo, and Dina B. Masa. "Glycaemic index of different coconut (Cocos nucifera)-flour products in normal and diabetic subjects." British Journal of Nutrition 90, no. 3 (September 2003): 551–56. http://dx.doi.org/10.1079/bjn2003944.

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The glycaemic index (GI) of commonly consumed bakery products supplemented with increasing levels of coconut (Cocos nucifera) flour was determined in ten normal and ten diabetic subjects. Using a randomized crossover design, the control and test foods were fed in random order on separate occasions after an overnight fast. Blood samples were collected through finger prick before and after feeding and were analysed for glucose levels using a clinical chemistry analyser. The significantly low-GI (< 60) foods investigated were: macaroons (GI 45·7 (sem 3·0)) and carrot cake (GI 51·8 (sem 3·3)), with 200–250 g coconut flour/kg (P<0·05). The test foods with 150 g coconut flour/kg had GI ranging from 61·3 to 71·4. Among the test foods, pan de sal (GI 87·2 (sem 5·5)) and multigrain loaf (GI 85·2 (sem 6·8)) gave significantly higher GI with 50 and 100 g coconut flour/kg respectively (P<0·05). On the other hand, granola bar and cinnamon bread with 50 and 100 g coconut flour/kg respectively gave a GI ranging from 62·7 to 71·6 and did not differ significantly from the test foods with 150 g coconut flour/kg (P < 0·05). A very strong negative correlation (r– 0·85, n 11, P < 0·005) was observed between the GI and dietary fibre content of the test foods supplemented with coconut flour. In conclusion, the GI of coconut flour-supplemented foods decreased with increasing levels of coconut flour and this may be due to its high dietary fibre content. The results of the present study may form a scientific basis for the development of coconut flour as a functional food. However, the fat content of coconut flour-supplemented food should always be considered to optimize the functionality of coconut fibre in the proper control and management of diabetes mellitus.

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Rabe, Sebastian, Guadalupe Sanchez-Olivares, Ricardo Pérez-Chávez, and Bernhard Schartel. "Natural Keratin and Coconut Fibres from Industrial Wastes in Flame Retarded Thermoplastic Starch Biocomposites." Materials 12, no. 3 (January 22, 2019): 344. http://dx.doi.org/10.3390/ma12030344.

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Natural keratin fibres derived from Mexican tannery waste and coconut fibres from coconut processing waste were used as fillers in commercially available, biodegradable thermoplastic starch-polyester blend to obtain sustainable biocomposites. The morphology, rheological and mechanical properties as well as pyrolysis, flammability and forced flaming combustion behaviour of those biocomposites were investigated. In order to open up new application areas for these kinds of biocomposites, ammonium polyphosphate (APP) was added as a flame retardant. Extensive flammability and cone calorimeter studies revealed a good flame retardance effect with natural fibres alone and improved effectiveness with the addition of APP. In fact, it was shown that replacing 20 of 30 wt. % of APP with keratin fibres achieved the same effectiveness. In the case of coconut fibres, a synergistic effect led to an even lower heat release rate and total heat evolved due to reinforced char residue. This was confirmed via scanning electron microscopy of the char structure. All in all, these results constitute a good approach towards sustainable and biodegradable fibre reinforced biocomposites with improved flame retardant properties.

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Rusli, M., R. S. Nanda, H. Dahlan, M. Bur, and M. Okuma. "Sound Absorption Characteristics of Composite Panel Made from Coconut Coir and Oil Palm Empty Fruit Bunches Fibre with Polyester." International Journal of Automotive and Mechanical Engineering 18, no. 3 (September 21, 2021): 9022–28. http://dx.doi.org/10.15282/ijame.18.3.2021.14.0691.

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The development of pure natural fibres as sound absorptive material remains overlooked due to their lack of mechanical and moist properties, low durability, and vulnerability to be damaged by the environment. Certain fibre treatments are needed to improve such disadvantages. This paper investigates sound absorption characteristics of coconut fibre (coir) and oil palm fibre made from empty fruit bunches (OPEFB) fibre bonded by polyester that can protect them from the ambient environment in order to increase their durability. Two types of fibre-polyester composites have been tested. The first is the fibre-polyester composite (FPC) type, which is totally coated with polyester as the composite matrix. Another type is the fibre-polyester bonded composite (FPBC), in which the polyester is brushed into slice by a slice of the fibre layer in order to coat and bond the fibre, although porous among the fibre remains possible. A two-channel impedance tube is used in the measurement within 200 Hz to 3000 Hz of the frequency range. It is found that FPBC type panel has almost similar sound absorption characteristics to its purely natural fibre as it is able to maintain the panel porosity. The coconut coir fibre panel and its composite have a maximum absorption coefficient of almost 100% within the frequency range 1500-2000 Hz, considerably better than the OPEFB fibre, with only about 80% of the absorption coefficient. If the FPC layer exists, the sound absorption is reduced, and the frequency peaks are also shifted. Additions of the FPC panel layer thickness produced lower sound absorptions and shifted the peaks to the lower frequency range. The FPBC panel type is viable to protect the fibre from the environment without changing its sound absorption characteristics.

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Jincy P.J., Anita Das Ravindranath2, and U.S. Sarma. "Ecofriendly Organosolv Process for Pulping of Tender Coconut Fibre." CORD 31, no. 1 (April 1, 2015): 11. http://dx.doi.org/10.37833/cord.v31i1.64.

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The huge biomass generated by vendors of tender coconut is the broken husks refuse dumped along roads and highways in Kerala. These dumps become breeding grounds for diseased causing germs and carrier mosquitoes causing threat to human life. In order to avoid pollution and find use of the rejected biomass of tender husks, a study was carried out on pulping of tender coconut husk fibre which could be used for papermaking. The optimum pulping condition, the quality of the pulp and its yield was evaluated using different variables like time and temperature. It was observed that the organosolv process could efficiently remove lignin from the tender coconut fibre yielding maximum cellulose. During the traditional pulping processes such as Kraft pulping to isolate the cellulose fibers for the production of paper, the hemicellulose and lignin fractions are degraded, limiting their valorization possibilities. Organosolv pulping has been advocated as the environmentally benign version of the kraft process. Unlike other pretreatment methods, organic solvents can easily be recycled and reused. The lignin dissolved by organosolv pulping is easily recovered by dilution and is unsulphonated and relatively unmodified. Products like handmade paper, egg cartons, handicraft items, garden articles like paper pots could be made from the organasolv pulp of tender coconut husk fibre.

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Andreas, Roy, Uyi Sulaeman, and Tien Setyaningtyas. "PEMANFAATAN KARBON SABUT KELAPA TERIMPREGNASI UNTUK MENGURANGI TEMBAGA(II) DALAM MEDIUM AIR." Molekul 3, no. 2 (November 1, 2008): 91. http://dx.doi.org/10.20884/1.jm.2008.3.2.53.

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This research is conducted to produce carbons from coconut fibre which approach to activated carbon clause continue with carbon surface modification and the adsorption examination to Cu(II) ions. The research consist of several phase. Carbon making of coconut fibre conducted by carbonization processes at 320-400oC with temperature interval 20oC. Carbon yielded in characterized moisture content, ash content and its adsoprtion to iodium. The carbon surface modification conducted by loaded 2-mercaptobenzotiazol (MBT) on carbon. The adsorpsibility of carbon-MBT tested by influence of contact time, pH, and the isoterm adsorption pattern. The result of the study showed carbonization of coconut fibre which approach the requirement of SII No.0258-89 gained at temperature 320oC. In the present study equilibrium time of 10 minute and pH was found to be optimum for both adsorbent. While type of isothermal adsorption from carban and carbon-MBT adsorbent followed the Langmuir adsorption pattern.

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Birkás, Z., G. Balázs, and Z. Kókai. "Effect of grafting and growing media on the chosen fruit quality compounds and sensory parameters of sweet pepper (Capsicum annuum L.)." Acta Alimentaria 50, no. 1 (March 5, 2021): 1–12. http://dx.doi.org/10.1556/066.2020.00016.

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AbstractGrafting is an effective tool in intensive vegetable growing systems that provides standard quality and yield. In the present study, the effect of two rootstocks (‘Capsifort F1’ and ‘Snooker F1’) on two commercial varieties (‘SV9702 F1’ and ‘Karpex F1’) grown on two media (soil and coconut fibre) was evaluated. During our 2-year study, those instrumental attributes, which have a dominant effect on the chosen chemical components of fruit quality (total soluble solids and titratable acidity) were investigated. Sensory tests were also implemented in order to identify any changes due to the applied technological combinations. Sensory profile analysis was used to identify the descriptive attributes and their perceived intensities. Panellists worked in individual booths with standard lighting, test results were recorded with the Profisens software. In general, it can be concluded that the major instrumental and sensory parameters did not deteriorate as a result of grafting and the application of coconut fibre medium. Some attributes were identified, where the grafted plants on coconut fibre medium showed higher values, namely flesh thickness and shape. Based on our results, grafting and the application of coconut medium is a feasible technological development for growers and agri-business companies.

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Nehvi, Ridha. "Studies on Strength Properties of Coconut Fibre Concrete." International Journal for Research in Applied Science and Engineering Technology 7, no. 7 (July 31, 2019): 404–10. http://dx.doi.org/10.22214/ijraset.2019.7061.

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Wittczak, T., A. Pas-Wyroslak, and C. Palczynski. "Occupational allergic conjunctivitis due to coconut fibre dust." Allergy 60, no. 7 (July 2005): 970–71. http://dx.doi.org/10.1111/j.1398-9995.2005.00818.x.

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John, V. M., M. A. Cincotto, C. Sjöström, V. Agopyan, and C. T. A. Oliveira. "Durability of slag mortar reinforced with coconut fibre." Cement and Concrete Composites 27, no. 5 (May 2005): 565–74. http://dx.doi.org/10.1016/j.cemconcomp.2004.09.007.

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Makinde, Folasade Maria, and Ayobami Opeyemi Eyitayo. "The evaluation of nutritional composition and functional and pasting properties of wheat flour-coconut flour blends." Croatian journal of food science and technology 11, no. 1 (May 31, 2019): 21–29. http://dx.doi.org/10.17508/cjfst.2019.11.1.03.

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The feasibility of partially replacing wheat flour with coconut flour in baked products was investigated. Matured coconut (Cocos nucifera) endocarp was grated for the extraction of milk, dried, milled,and pulverized. Five blends of composite flour were prepared by combining wheat flour with 10% to 50% of partially defatted coconut flour,respectively. The 100% wheat flour served as control. The samples were analysed for proximate, mineral, functional,and pasting properties using standard procedures. The proximate analysis indicated 5.52 % moisture, 23.6% protein, 11.14% fibre, 5.4% fat, 5.21% ash,and 49.1% carbohydrate for coconut flour. The ranges of the proximate composition forthe flour blends were:moisture (4.79-5.55%), protein (14.9 -19.1%), fibre (0.44 -5.12%), fat (2.9 -5.3%), ash (0.68-2.13%), carbohydrate (62.7-76.2%),and energy (315.26-335.28 kCal). The values for moisture, protein, fat, fibre,and ash increased with the increasing levels of coconut substitution,except for carbohydrate and energy contents. There were significant differences (p≤0.05) in calcium, magnesium, potassium, phosphorus, iron,and zinc concentrations of the samples. The range of values obtained for these parameters was1.32-2.59 mg/kg, 2.60-3.83 mg/kg, 12.10-16.89 mg/kg, 12.40-18.50 mg/kg,0.50-1.22 mg/kg and 0.30-1.23 mg/kg, respectively. The ranges of functional properties were:loosed bulk density (0.28-0.49 g/mL),packed bulk density (0.44-0.75 g/mL), pH (5.77-6.57), swelling capacity (3.89-6.56%), water absorption capacity (0.89-3.97 ml/g),oil absorption capacity (1.26-3.20 ml/g),and gelation (12.0-18.0%). The pasting characteristics showed significant differences betweenthe100% wheat flour and coconut substituted samples. The results revealed modifications in nutritional, functional,and pasting properties in blends containing fractions of partially defatted coconut flour,which suggeststheir application in diverse food products.

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Bergeret, Anne, and Jean Charles Benezet. "Natural Fibre-Reinforced Biofoams." International Journal of Polymer Science 2011 (2011): 1–14. http://dx.doi.org/10.1155/2011/569871.

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Starches and polylactic acids (PLAs) represent the main biobased and biodegradable polymers with potential industrial availability in the next decades for “bio” foams applications. This paper investigates the improvement of their morphology and properties through processing and materials parameters. Starch foams were obtained by melt extrusion in which water is used as blowing agent. The incorporation of natural fibres (hemp, cellulose, cotton linter, sugarcane, coconut) in the starch foam induced a density reduction up to 33%, a decrease in water absorption, and an increase in mechanical properties according to the fibre content and nature. PLA foams were obtained through single-screw extrusion using of a chemical blowing agent that decomposed at the PLA melting temperature. A void content of 48% for PLA and 25% for cellulose fibre-reinforced PLA foams and an improvement in mechanical properties were achieved. The influence of a fibre surface treatment was investigated for both foams.

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Journal articles on the topic 'Coconut fibre'

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