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Journal articles on the topic 'Fibers. Pulping. Paper'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Mat Nayan, Nadirul Hasraf, Saiful Izwan Abd Razak, and Wan Aizan Wan Abdul Rahman. "Biopulping by Ceriporiopsis subvermispora towards Pineapple Leaf Fiber (PALF) Paper Properties." Advanced Materials Research 1043 (October 2014): 180–83. http://dx.doi.org/10.4028/www.scientific.net/amr.1043.180.

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Environmental awareness and depletion of the wood resources are among vital factors that motivate various researchers to explore the potential of agro-based crops as an alternative source of fiber material in paper industries such as writing, printing, wrapping, and packaging. Fibers from agro-based crops are available in abundance, low cost, and most importantly its biodegradability features, which sometimes referred as “ecofriendly” materials. This paper reports the biopulping of pineapple leaf fiber (PALF) by Ceriporiopsis subvermispora towards the properties of its fiber and paper forms. T

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Marques, Gisela, Jorge Rencoret, Ana Gutiérrez, and José C. del Río. "Evaluation of the Chemical Composition of Different Non-Woody Plant Fibers Used for Pulp and Paper Manufacturing." Open Agriculture Journal 4, no. 1 (2010): 93–101. http://dx.doi.org/10.2174/1874331501004010093.

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The chemical composition of several non-woody plant fibers (bast fibers from flax, hemp, kenaf, jute; leaf fibers from sisal, abaca and curaua; and giant reed), which are used as raw materials for pulp and papermaking, has been evaluated. Particular attention was paid to the composition of the lipophilic compounds and the structure of the lignin polymer since they are important components of the fiber that strongly influence the pulping and bleaching performances.

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3

Chen, Yuan, Kuizhong Shen, and Gaiyun Li. "Comprehensive evaluation of the industrial processing effects on the fiber properties of the pulps from wood residues." Nordic Pulp & Paper Research Journal 35, no. 4 (2020): 631–40. http://dx.doi.org/10.1515/npprj-2020-0065.

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AbstractWood processing residue, as an essential forest resource, is underestimated in the industrial applications. With the development of pulping technology, fiber quality and cost control have become the important prospects. It is very crucial to investigate the influencing factors of pulping, designed to reveal the relationship between fiber separation and physical performances. In this study, a range of effect factors of large-scale pulping process, including wood species, pretreatment, mechanical conditions, and post-bleaching treatment, were comprehensively investigated. The results ill

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4

Dollié, Lucas, Gérard Mortha, and Nathalie Marlin. "Modeling kraft cooking kinetics of fiber mixes from TMP and unbleached kraft pulps for assessment of old corrugated cardboard delignification." Holzforschung 72, no. 8 (2018): 621–29. http://dx.doi.org/10.1515/hf-2017-0197.

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AbstractKraft cooking kinetics of three different lignocellulosic substrates have been investigated, namely fibers from unbleached kraft pulp (UBKP from Pinus radiata), fibers from softwood unbleached thermomechanical pulp (TMP), and wood chips for TMP production. UBKP and TMP were considered to be representative of a fiber mixture obtained after the pulping and cleaning of old corrugated cardboards (OCC). The characteristic parameters for fitting a mathematical model for kraft pulping were estimated. Based on the results, a “fiber mixture cooking model” was developed to predict the cooking ki

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5

Onuorah, E. O., J. T. Nwabanne, and E. L. C. Nnabuife. "Pulp and paper making potentials of elaeis guineensis (oil palm) grown in south east, Nigeria." World Journal of Engineering 12, no. 1 (2015): 1–12. http://dx.doi.org/10.1260/1708-5284.12.1.1.

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The objective of this study was to determine the pulping and paper making potentials of oil palm (E guineensis). Fibrous material from the whole trunk (WT), empty fruit bunch (EFB, fronds (FDS) and depithed trunk (DT) were evaluated using proximate chemical analysis, fiber morphological and related characteristics. Effect of active alkali (AA) % as Na2O on kraft pulping properties and the handsheet paper propertie was studied. Proximate chemical analysis reveal acceptable cellulose content for EFB (43.51%), FDS (51.13%) and DT (53.80%) while WT (32.44) is unacceptable. Low lignin content obtai

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6

Henry O Chibudike, Nelly A Ndukwe, Eunice C Chibudike, Olubamike A Adeyoju, and Nkemdilim I Obi. "MEA-conversion of agro-wastes to paper-pulp: Optimization of pulping conditions." World Journal of Advanced Research and Reviews 11, no. 2 (2021): 337–49. http://dx.doi.org/10.30574/wjarr.2021.11.2.0312.

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This paper investigates the potentials of a novel environmental friendly pulping (Monoethanoleamine-MEA) process in comparison with conventional Soda and Kraft pulping processes in furnishing high yield pulp from agro-biomass for the formation Papers and other paper products. The pulping investigation had three (3) factors at three (3) different levels each: Factor 1, MEA concentration (50, 75 and 100%); Factor 2, cooking time (60, 90 and 120minutes); Factor 3, liquor-biomass ratio (4, 6 and 8) at a fixed temperature of 123±5oC. Consequently, the experimental design had 27 treatments (3×3×3) a

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7

Naithani, Ved, Preeti Tyagi, Hasan Jameel, Lucian A. Lucia, and Lokendra Pal. "Ecofriendly and innovative processing of hemp hurds fibers for tissue and towel paper." BioResources 15, no. 1 (2019): 706–20. http://dx.doi.org/10.15376/biores.15.1.706-720.

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An innovative approach for preparing hemp fibers from hemp hurds for use in tissue and towel grades of paper is described. Hemp hurds are a low value by-product of industrial hemp processing that are generally used for animal bed litter. Tissue paper was fabricated from hemp hurd fibers by following three pulping processes: autohydrolysis (hydrothermal), sodium carbonate-based defibration, and high yield kraft pulping, and benchmarked against hardwood pulp. To meet industrial standards, hardwood and hemp pulp fibers were mixed at a dry mass ratio of 75:25, from which tissue paper sheets were p

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8

KEREKES, RICHARD, and DAVID MCDONALD. "Equilibrium moisture content in wet pressing of paper." July 2020 19, no. 7 (2020): 330–40. http://dx.doi.org/10.32964/tj19.7.333.

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Equilibrium moisture is a limiting factor in achieving high solids in the later stages of pressing or pressing low basis weight grades. We have developed a model that relates equilibrium moisture directly to the pore size distribution of fibers as measured by the solute exclusion technique. The model shows that chemical pulping and refining increase equilibrium moisture by increasing pore volume at given pore sizes in fibers, which leads to lower pressed solids and greater energy expenditure in the dryer section. Means to increase equilibrium moisture without compromising pulp strength are bri

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9

Boonpitaksakul, Wisanee, Korawit Chitbanyong, Buapan Puangsin, Sawitree Pisutpiched, and Somwang Khantayanuwong. "Natural fibers derived from Coi (Streblus asper Lour.) and their behavior in pulping and as paper." BioResources 14, no. 3 (2019): 6411–20. http://dx.doi.org/10.15376/biores.14.3.6411-6420.

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The Siamese people utilized the bark of the Coi tree (Streblus asper Lour.) to manufacture paper approximately 330 years ago. However, there are no studies yet related to the chemical properties of Coi bark as well as the morphological properties of Coi bark fiber and Coi pulp fiber. This research paper discussed such properties of Coi bark. The results indicated that Coi bark possessed a chemical composition that could potentially be used for pulp production, although it contained a high value of ash content, due to many calcium particles in the bark. Even though Coi pulp fibers were very lon

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10

Solala, Iina, Toni Antikainen, Mehedi Reza, Leena-Sisko Johansson, Mark Hughes, and Tapani Vuorinen. "Spruce fiber properties after high-temperature thermomechanical pulping (HT-TMP)." Holzforschung 68, no. 2 (2014): 195–201. http://dx.doi.org/10.1515/hf-2013-0083.

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Abstract Spruce was submitted to high-temperature (150°C–170°C) refining for 2 or 5 min to produce thermomechanical pulp (TMP) fibers with decreased electrical energy consumption. The pulp was characterized in terms of specific energy consumption as well as tensile and surface properties. The fibers from high-temperature TMP contained more surface lignin even if all sample types usually broke at the S1–S2 cell wall region. They also produced significantly weaker paper sheets, whereas their dry zero-span strength did not suffer substantial losses, indicating decreased fiber-fiber bonding. Tensi

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Brändström, Jonas, Jean-Paul Joseleau, Alain Cochaux, Nathalie Giraud-Telme, and Katia Ruel. "Ultrastructure of commercial recycled pulp fibers for the production of packaging paper." Holzforschung 59, no. 6 (2005): 675–80. http://dx.doi.org/10.1515/hf.2005.108.

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Abstract Transmission electron microscopy was used to investigate the ultrastructure of recycled pulp fibers originating from a household collection plant and intended for the production of packaging paper. Three recovered paper grades and recycling processes, including pulping, screening, cleaning and refining, were assessed with emphasis on surface and internal fibrillation as well as xylan localization. Results showed a large heterogeneity with respect to fiber ultrastructure within and between the grades. Screening and cleaning steps had no detectable effects, but refining clearly increase

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YANG, R., and C. LUETTGEN. "Repulping of wet strength paper towel with potassium monopersulfate." September 2020 19, no. 9 (2020): 463–70. http://dx.doi.org/10.32964/tj19.9.463.

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Potassium monopersulfate (KMPS) was used in repulping of polyamide-epichlorohydrin (PAE)-containing paper towel. The effectiveness of the repulping aid was compared with that of sodium hypochlorite. Addition of a 2.4% KMPS repulping aid achieved complete repulping of the paper towel, resulting in 88% screen yield and about 5% rejects. To reach a similar pulping result, two times the oxidative equivalent amount of sodium hypochlorite had to be used. Compared to the pulp fibers obtained from sodium hypochlorite repulping, those obtained from KMPS repulping had higher physical strength, longer fi

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13

Takamura, Norio, and Kazuhiko Sameshima. "Studies on the ammonium oxalate pulping of bast fibers. III. Chemical composition and pulping of paper mulberry (Kozo and Kazinoki) bast fibers." JAPAN TAPPI JOURNAL 39, no. 10 (1985): 970–76. http://dx.doi.org/10.2524/jtappij.39.970.

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14

Hernández-Hernández, Hilda M., Jorge J. Chanona-Pérez, Georgina Calderón-Domínguez, et al. "Evaluation of Agave Fiber Delignification by Means of Microscopy Techniques and Image Analysis." Microscopy and Microanalysis 20, no. 5 (2014): 1436–46. http://dx.doi.org/10.1017/s1431927614012987.

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AbstractRecently, the use of different types of natural fibers to produce paper and textiles from agave plants has been proposed. Agave atrovirens can be a good source of cellulose and lignin; nevertheless, the microstructural changes that happen during delignification have scarcely been studied. The aim of this work was to study the microstructural changes that occur during the delignification of agave fibers by means of microscopy techniques and image analysis. The fibers of A. atrovirens were obtained from leaves using convective drying, milling, and sieving. Fibers were processed using the

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15

SOOD, SWATI, and CHHAYA SHARMA. "STUDY ON FIBER FURNISHES AND FIBER MORPHOLOGICAL PROPERTIES OF COMMONLY USED INDIAN FOOD PACKAGING PAPERS AND PAPERBOARDS." Cellulose Chemistry and Technology 55, no. 1-2 (2021): 125–31. http://dx.doi.org/10.35812/cellulosechemtechnol.2021.55.13.

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Maintaining the quality of their final paper-based food packaging products at a high and constant level is a key issue for food packaging manufacturers to meet the customer demands. In the present study, in order to analyze the present status of quality of paper-based food packages in India, the fiber furnishes of different common paper- and paperboard-based food packages were studied by the Graff “C” staining test and their fiber morphological properties – by MorFi analysis. The staining test results showed that all the samples contained fiber furnish made either by the chemical or by the mec

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16

Abd El-Sayed, Essam S, Mohamed El-Sakhawy, and Mohamed Abdel-Monem El-Sakhawy. "Non-wood fibers as raw material for pulp and paper industry." Nordic Pulp & Paper Research Journal 35, no. 2 (2020): 215–30. http://dx.doi.org/10.1515/npprj-2019-0064.

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AbstractPulp and paper industry in the world have been growing fast. As a result, there has been a massive request for pulp and paper raw materials. The raw materials used in papermaking can be classified into three groups: wood, non-wood, and recycled wastepaper. The Non-wood raw material is an important fiber resource in the regions where forest resources are limited. The current usage of non-wood plant fibers, as rice straws, corn stalks, cotton stalks, and bagasse would play a chief role in increasing papermaking raw materials. Using of non-wood plant fibers in the paper industry associate

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17

Jincy P.J., Anita Das Ravindranath2, and U.S. Sarma. "Ecofriendly Organosolv Process for Pulping of Tender Coconut Fibre." CORD 31, no. 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 pro

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18

YILMAZ, UFUK, AHMET TUTUŞ, and SİNAN SÖNMEZ. "FIBER CLASSIFICATION, PHYSICAL AND OPTICAL PROPERTIES OF RECYCLED PAPER." Cellulose Chemistry and Technology 55, no. 5-6 (2021): 689–96. http://dx.doi.org/10.35812/cellulosechemtechnol.2021.55.58.

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"In this study, reference papers prepared in accordance with the INGEDE 11p standard (International Association of the Deinking Industry) were recycled three times. Initially, reference papers were subjected to wetting, pulping, storage, deinking, dispersing and bleaching processes. At the end of these processes, test papers were produced and their optical characteristics were examined. The brightness value of writing papers (of 80 grams) was determined to be of 86%, following the TS 11610:2017 standard. In order to bring the brightness of the produced laboratory test papers to the specified v

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19

Wu, Lan Fang, Zhi Jie Xu, Zuo Dond Qin, Greg Duns та Ji Shuang Chen. "Pulping Utilization of Spartina alterniﬂora (Common Cordgrass) Based on Fiber Characteristics". Applied Mechanics and Materials 130-134 (жовтень 2011): 833–37. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.833.

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Due to the decline of the world's forest resources, non-wood fiber sources are becoming increasingly important as raw materials in fiber-based industries, One source of such non-wood fiber isS. alterniﬂora(Common Cordgrass) and related species, which are large-sized grasses, about 1-1.5 m tall, with leaves 20-60 cm in length). These grasses have invaded many coastal areas in China and can result in huge economic losses. Studies have shown that the fiber composition of S. alterniﬂora is: cellulose 35.9%, hemicellulose 34.2%, lignin 15.9%, ash 2.98%. The length of S. alterniﬂora fibers, which ar

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20

Pintor-Ibarra, Luis Fernando, José de Jesús Rivera-Prado, Sarai Ramos-Vargas, Teófilo Escoto-García, Nancy Eloisa Rodríguez-Olalde, and José Guadalupe Rutiaga-Quiñones. "Kraft pulping and bleaching of Eichhornia crassipes (Mart.) Solms (water hyacinth)." BioResources 15, no. 4 (2020): 9243–64. http://dx.doi.org/10.15376/biores.15.4.9243-9264.

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Eichhornia crassipes (water hyacinth) was pulped by means of a kraft pulping process with reagent loads of 10 and 20% on a dry matter basis to determine yield, rejects, kappa number, and ash. Fiber classification, brightness, opacity, and viscosity were measured in the brown pulp. Bleaching was performed by means of an O1O2D1(PO)D2HD3 sequence. Yield, kappa number, pH, ash, brightness, opacity, and viscosity were evaluated in the bleached pulp. Finally, a microanalysis of inorganic elements was carried out in both the bleached and unbleached pulp ash. The highest kraft pulp yield was 26.4%, wi

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21

Kasmani, Jafar Ebrahimpour, and Ahmad Samariha. "Effects of montmorillonite nanoclay on the properties of chemimechanical pulping paper." BioResources 16, no. 3 (2021): 6281–91. http://dx.doi.org/10.15376/biores.16.3.6281-6291.

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The effects of nanoclay were studied relative to the physical, mechanical, optical, and morphological properties of chemimechanical pulping papers. Nanoclay was incorporated at 0%, 2%, 4%, 6%, 8%, or 10%. To increase the retention, 1% cationic starch was used in all test papers. Handsheets (60 g/m2 in weight) were tested to determine their physical, mechanical, optical, and morphological properties. Up to 2% nanoclay increased the tensile strength; at values greater than 2%, the tensile strength decreased. The addition of up to 4% nanoclay increased roughness; between 4% and 10% nanoclay, roug

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FERDOUS, TASLIMA, M. A. QUAIYYUM, KAZI M. YASIN ARAFAT, and M. SARWAR JAHAN. "Characterization of chia plant (Salvia hispanica) for pulping." October 2020 19, no. 10 (2020): 511–24. http://dx.doi.org/10.32964/tj19.10.511.

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In this paper, chia plant was characterized in terms of chemical, morphological, and anatomical properties. Chia plant was characterized with low α-cellulose (30.5%); moderate lignin (23.2%) with syringyl to guaiacyl ratio of 1.41; and shorter fiber length (0.67 mm) with thinner cell wall (1.91 μm) and good flexibility coefficient (71.44). Anatomical features showed that chia plant consists of vessels, fibers, parenchyma cells, and collenchyma cells. Chia plant pulping was evaluated in soda-anthraquinone (soda-AQ) and formic acid/peroxyformic acid (FA/PFA) processes. Chia plant was difficult t

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23

Umair, Muhammad, Norhafiz Azis, Rasmina Halis, and Jasronita Jasni. "Examination on the physical properties of untreated kenaf insulation paper at different beating degrees." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 2 (2020): 759. http://dx.doi.org/10.11591/ijeecs.v17.i2.pp759-766.

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<span>This paper examines the physico-mechanical properties of untreated kenaf based insulation paper with consideration on different beating degrees. Kenaf bast fibers were first processed through soda pulping process. Different beating degrees were subjected to the processed pulps. Physical parameters of the paper were measured for each of the beating degrees. It is found that as the beating revolution increases, the kenaf based insulation paper’s density, tensile index and burst index increase while thickness and tear index decrease. </span>

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Niaraki, Pouria Rezaee, Ahmad Jahan Latibari, Arash Rashno, and Ajang Tajdini. "The interaction of delignification and fiber characteristics on the mechanical properties of old corrugated container fiber/polypropylene composite." Science and Engineering of Composite Materials 24, no. 1 (2017): 35–40. http://dx.doi.org/10.1515/secm-2014-0406.

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AbstractThe effect of fiber characteristics from old corrugated container (OCC) paper on the strength properties of OCC/polypropylene composites was evaluated. Fibers with different contents of lignin (2.8%, 3.8%, 5.3%, and 7%) were produced using soda pulping. Wettability, tear, and tensile strength of the fibers were measured as the indication factors to assess the strength of reinforcing component in the composites. The weight portions of the OCC fibers, polypropylene, and maleic anhydride-grafted polypropylene (MAPP) were selected at 20%, 77%, and 3% of the total weight of the composite, r

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SINHA, AKHOURI SANJAY KUMAR. "Formic acid pulping process of rice straw for manufacturing of cellulosic fibers with silica." August 2021 20, no. 8 (2021): 489–96. http://dx.doi.org/10.32964/tj20.8.489.

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Emerging technology has the potential to develop entirely new approaches for producing cellulose fiber-based materials along with fuels and chemical raw materials like lignin and furfural. Rice straw is a rich source of cellulosic fibers and inorganic micronic-sized particles termed as ash. They can prove helpful in development of new or enhanced agricultural residue-based materials and products that offer cost effective substitutes for nonrenewable materials used in different domestic and industrial applications. Lignocellulose is an abundant material that is submicronic at the basic level. R

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26

Saferi, S. K. A., and Y. Yusof. "A Review: Natural Fiber as Reinforcement in Waste Paper Recycling and its Processing Methods." Applied Mechanics and Materials 315 (April 2013): 443–47. http://dx.doi.org/10.4028/www.scientific.net/amm.315.443.

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As demand for clean and healthy environment, people make many alternate solutions to save the environment. To save trees and overcome landfill of waste material and waste disposal by burning activities issues (cause to losing energy and increase pollution), people nowadays take recycling as a recovery. Recycling waste paper into new product increased over the years. Shortage of wood supply required new sources of natural fiber for papermaking industry. Many researchers have studied new sources of natural fibers from non wood materials, such as oil palm residues, kenaf (Hibiscus Cannabinus), pi

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Yahya, Ridwan, Mucharromah Mucharromah, Devi Silsia, and Septiana Septiana. "Physical Damages of Wood Fiber in Acacia Mangium due to Biopulping Treatment." Molekul 11, no. 1 (2016): 92. http://dx.doi.org/10.20884/1.jm.2016.11.1.198.

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Biopulping is fungal pretreatment of wood chips to reduce unused chemical composition of material in pulping. Preliminary study showed that pretreatment of Phanerochaetachrysosporium to Acacia mangium Willd can reduce lignin and improve holocellulose and cellulose content of the material. Fiber dimension recognized as other important factor for paper properties. The question is how the integrity and dimensions of the wood fiber that has been pretreated with the fungus. The objectives of present study were to know effect of pretreatment of P. chrysosporium to the integrity and dimensions of the

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Daud, Zawawi, Mohd Zainuri Mohd Hatta, Angzzas Sari Mohd Kassim, Ashuvila Mohd Kassim, and Halizah Awang. "Analysis by Pineapple Leaf in Chemical Pulping Process." Applied Mechanics and Materials 773-774 (July 2015): 1215–19. http://dx.doi.org/10.4028/www.scientific.net/amm.773-774.1215.

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Malaysia has an abundance of agro waste material that have not been fully utilized to a maximum production. Thus, the finding of a new alternative fiber in non wood material will be favorable in paper production. Pineapple (Ananas Comosus) is the common tropical plant, which consists of coalesced berries. This pineapple is leading member of the family of Bromeliaceae and it came from genus Ananas. Fiber bundle from pineapple leaf can be separated from the cortex where it reveals the pineapple leaf fiber in multi-cellular and lignocelluloses pattern. This leaf has a ribbon-like structure and ce

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Kimura, Minoru, Takashi Ishida, Yuko Ono, Miyuki Takeuchi, and Akira Isogai. "Significant contribution of fibrils on pulp fiber surface to water retention value." Nordic Pulp & Paper Research Journal 35, no. 1 (2020): 96–105. http://dx.doi.org/10.1515/npprj-2018-0041.

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AbstractThe contribution of structural changes of softwood bleached kraft pulp (SBKP) fibers and partly dried SBKP handsheets to their water retention values (WRVs) was studied. Two factors related to mesopores and macropores, which were determined for super critical point (SCP)-dried SBKP sheet samples, should participate in the WRVs determined for wet SBKP sheet samples. The mesopores are formed during pulping/bleaching to remove lignin and a part of hemicelluloses that are present originally in wood cell walls. The combined volumes of mesopores and macropores (totally < ∼0.6 g g−1) in SB

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30

Omotoso, Mopelola, and Abdul Owolabi. "Pulp and Paper Evaluation of Solid Wastes from Agricultural Produce." International Journal of Chemistry 7, no. 2 (2015): 113. http://dx.doi.org/10.5539/ijc.v7n2p113.

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The pulp and paper potentials of solid-waste of Ananas comosus (pine-apple leaves), Cocos nucifera (coir i.e. fiber from coconut husk), Tithionia diversifolia (sunflower) and Sansevieria liberica (mother-in-law’s tongue) were investigated. Pulp was produced by soda pulping process at liquor to solid ratio 7:1 and bleached with hydrogen peroxide in basic medium. The pulp yield of pineapple leaves, coir, sunflower, and Sansevieria liberica were 80%, 75%, 79% and 82.5% respectively. The fiber morphology were determined after maceration with 1:1 acetic acid–hydrogen peroxide ratio. The fiber lengt

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Bloch, Jean Francis, Imtiaz Ali, Raphael Passas, and Sabine Rolland du Roscoat. "Papers as Functional Green Materials." Advanced Materials Research 747 (August 2013): 715–18. http://dx.doi.org/10.4028/www.scientific.net/amr.747.715.

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Paper is constituted of natural fibers and represents a perfect example of structural multifunctional materials. Indeed, its fibrous structure is engineered to fit the different end use properties: both optical and mechanical properties are usually required. These requirements may lead to contradictory needs in terms of structure. The influence of the structure on the physical properties is classically tackled based on standard methods such as the estimation of the porosity. However, this macroscopic property is not sufficient in terms of optimization of the fibrous network. For example, fluid

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Hwang, Ji Hyun, Jin Ho Seo, and Hyoung Jin Kim. "Pulping Properties of Bast Fibers of Paper Mulberry by Pre-steaming and 2-stage Cooking System." Journal of Korea Technical Association of The Pulp and Paper Industry 45, no. 1 (2013): 75–82. http://dx.doi.org/10.7584/ktappi.2013.45.1.075.

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Pan, X. J., Y. Sano, and T. Ito. "Atmospheric Acetic Acid Pulping of Rice Straw II: Behavior of Ash and Silica in Rice Straw during Atmospheric Acetic Acid Pulping and Bleaching." Holzforschung 53, no. 1 (1999): 49–55. http://dx.doi.org/10.1515/hf.1999.009.

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Summary A detailed examination was made of the behavior and distribution of ash and silica during atmospheric acetic acid pulping and subsequent bleaching of rice straw. Ash-rich pulps (in unbleached pulp, about 18%; and in bleached pulp, 16%) with matchable strength properties for conventional alkaline pulps were obtained from rice straw by acetic acid pulping. More than 50% of the ash and about 75% of the silica in rice straw were retained in the pulp after pulping. Because only those acid-soluble mineral components were dissolved during acetic acid pulping, the ash remained in the pulp cons

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Duncan, Shona M., Malek Alkasrawi, Raghu Gurram, Fares Almomani, Amy E. Wiberley-Bradford, and Eric Singsaas. "Paper Mill Sludge as a Source of Sugars for Use in the Production of Bioethanol and Isoprene." Energies 13, no. 18 (2020): 4662. http://dx.doi.org/10.3390/en13184662.

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Paper mill sludge (PMS) solids are predominantly comprised of cellulosic fibers and fillers rejected during the pulping or paper making process. Most sludges are dewatered and discharged into landfills or land spread at a cost to the mill; creating large economic and environmental burdens. This lignocellulosic residual stream can be used as a source of sugars for microbial fermentation to renewable chemicals. The aim of this study was to determine the possibility of converting mill sludge to sugars and then fermentation to either isoprene or ethanol. Chemical analysis indicated that the cellul

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FERNANDO, DINESH, and GEOFFREY DANIEL. "Characterization of spruce thermomechanical pulps at the fiber cell wall level: a method for quantitatively assessing pulp fiber development using Simons’ stain." October 2010 9, no. 10 (2010): 47–55. http://dx.doi.org/10.32964/tj9.10.47.

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Fiber development of mechanical pulps is normally assessed by a combination of conventional numerical analyses of fiber features using FiberMaster, PulpEye, and Kajaani instruments. When observed, changes in fiber morphology are normally subjective with use of light- and electron microscopy observations of representative fibers. Thus, visualization and quantification of changes in the fiber cell wall, like delaminaton/internal fibrillation (D/IF) induced during processing, would offer a great advantage. Here, we developed a method using Simons’ stain (SS) that allows quantification of pulp fib

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Umair, Muhammad, Norhafiz Azis, Rasmina Halis, and Jasronita Jasni. "Investigation of Kenaf Paper in the Presence of PVA for Transformers Application." Materials 13, no. 21 (2020): 5002. http://dx.doi.org/10.3390/ma13215002.

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This paper presents an investigation on the physio-mechanical properties and AC breakdown voltage of the Kenaf paper in the presence of Polyvinyl Alcohol (PVA) for transformers application. Kenaf bast fibers were used in order to produce the paper through the soda pulping process. The pulps were subjected to beating up to 12,000 revolutions, whereby the PVA was added to the pulps at a different weight percentage concentration up to 12%. Morphological study was carried out on the Kenaf paper based on Scanning Electron Microscopy (SEM). The apparent density, Tensile Index (TI), Burst Index (BI),

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Uhmeier, Andreas, and Lennart Salme´n. "Influence of Strain Rate and Temperature on the Radial Compression Behavior of Wet Spruce." Journal of Engineering Materials and Technology 118, no. 3 (1996): 289–94. http://dx.doi.org/10.1115/1.2806808.

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In the mechanical pulping process, wood is treated in compression and in shear at high temperatures in the wet state, to separate the fibers and also to increase the bonding ability and flexibility of the fibers in order to obtain strong paper sheets. This is probably enhanced by permanent deformation and collapse of the fibers. In this study, the influences of moisture content, density, strain rate and temperature on the mechanical response of spruce compressed radially to 50 percent strain were investigated. Regression models were obtained for the plateau stress (≈collapse stress), energy ab

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Dislaire, Claire, Bastien Seantier, Marion Muzy, and Yves Grohens. "Mechanical and Hygroscopic Properties of Molded Pulp Products Using Different Wood-Based Cellulose Fibers." Polymers 13, no. 19 (2021): 3225. http://dx.doi.org/10.3390/polym13193225.

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With an increasing interest for molded pulp product (MPP) in the industry, it is important to fully understand how the manufacturing process is different from papermaking. One specific way to differentiate the processes is to compare their resulting products. As the paper industry uses several wood fibers with various pulping processes, it is interesting to compare some of these fibers, to further progress our understanding of the MPP process. In this study, six different wood fibers were used (as received) and analyzed to obtain the sample with the lowest moisture uptake and highest tensile p

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Babakhanova, Khalima Abishevna, Zulfija Kamilovna Galimova, and Mansur Mekhridinovich Abdunazarov. "USE OF PHARMACEUTICAL WASTE IN PAPER INDUSTRY OF THE REPUBLIC OF UZBEKISTAN." chemistry of plant raw material, no. 3 (October 22, 2020): 285–90. http://dx.doi.org/10.14258/jcprm.2020037298.

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The article gives the consideration to the properties of paper with the addition of pulp mass from the waste of the pharmaceutical industry, namely licorice root after removing extraction. Licorice roots were dried to air-dry state after extraction, cleaned of wastes and cut into fragments 10–30 mm long, then subjected to pulping with 2–4% NaOH solution at a hydro module 1 : 5, at a temperature of 95–98 °С for 60–90 minutes. After washing with hot water, they are bleached in an alkaline medium with a solution of hydrogen peroxide at a consumption of 3–4% of the mass of absolutely dry cellulose

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Jamil, Arini Hidayati, Heronimus Judi Tjahjono, Parnidi Parnidi, and Marjani Marjani. "Potensi Penggunaan Dua Spesies Agave untuk Pembuatan Pulp dan Kertas." JURNAL SELULOSA 8, no. 01 (2018): 43. http://dx.doi.org/10.25269/jsel.v1i01.229.

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Potential of Two Agave Species for Pulp and Paper MakingAbstractBoth of Agave sisalana and A. cantala are the most favorite agave species for fiber producer plant in Indonesia. Nevertheless, research study for using fiber of A. sisalana and A. cantala for pulp and paper purpose is hard to find. This study aims to observe the characteristics of A. sisalana and A. cantala fibers as a raw material of pulp including fiber morphology, chemical components, pulp characteristics, optical and physical properties of the handsheets. The observation of all characters was based on Indonesian National Stand

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Wang, Yingchao, Shanshan Liu, Xiujing Liu, Liran Wu, Qiang Wang, and Xingxiang Ji. "Biological pretreatment of biomass to decrease energy consumption in mechanical defiberization process." BioResources 15, no. 4 (2020): 9882–93. http://dx.doi.org/10.15376/biores.15.4.wang.

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It is critical to develop sustainable, effective, and innovative technologies for society, particularly for processing of biomass, so that the green/ sustainable advantages can be extended to the final products. This review examined two-step biological-mechanical defiberization of lignocellulosic biomass to produce fibers. Two biological pretreatment methods of fungi and enzymes were mainly introduced, with particular focus on the energy consumption. Potential application methods, advantages, disadvantages, process economics, and future prospects of two biological pretreatment methods were con

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Andrade, Marcela Freitas, and Jorge Colodette. "PRODUCTION OF PRINTING AND WRITING PAPER GRADE PULP FROM ELEPHANT GRASS." CERNE 22, no. 3 (2016): 325–36. http://dx.doi.org/10.1590/01047760201622032186.

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ABSTRACT The main goal of this study was to characterize chemically and morphologically elephant grass (Pennisetum purpureum), and evaluate the potential of its fibers for production of printing and writing paper grade pulp. The elephant grass was chemically and morphologically characterized and cooked by the soda process to two different degrees of delignification (kappa 17.5 and 10.6). The resulting pulps were fully bleached by the O-D*-(EP)-D sequence and characterized for their beatability, drainability and physical-mechanical properties. The lignin content (20.2%) was low, indicating that

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Segura, Tiago, and Francides Da Silva, Jr. "Potential of C. citriodora wood species for kraft pulp production." March 2016 15, no. 3 (2016): 159–64. http://dx.doi.org/10.32964/tj15.3.159.

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This work characterizes the wood from Corymbia citriodora for pulp production. We evaluated wood chip samples from an 8-year-old C. citriodora plantation. A sample of Eucalyptus grandis x Eucalyptus urophylla chips from a 7-year-old plantation was used as reference material. Wood fiber morphology and chemical composition were analyzed. A modified kraft pulping was carried out to achieve kappa 18 on brownstock pulps. After that, pulps were oxygen delignified, and then underwent elemental chlorine free (ECF) bleaching to achieve the target brightness of 90±0.5% ISO. The bleached pulps were refin

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Mandlika, Anurag, and Troy Runge. "Addition of corn stover arabinoxylan into hardwood during pulping for improved physical properties." September 2017 16, no. 09 (2017): 495–504. http://dx.doi.org/10.32964/tj16.9.495.

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Agricultural residues, such as corn stover, are being considered for biofuels and bioproducts. They represent inexpensive, pentosan-rich feedstock that are available in abundance. These materials are typically pretreated to make them more amenable to biological processes such as fermentation. One such treatment involves extraction using alkali to remove the hemicellulose, leaving the cellulose more accessible for chemical or enzymatic hydrolysis. Extracted xylan hemicellulose may be considered for use in pulp and paper, or for providing a potential value stream from cellulosic ethanol biorefin

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Ristianingsih, Yuli, Nelli Angreani, and Annisa Fitriani. "PENGARUH KOMPOSISI SEKAM PADI DAN AMPAS TEBU TERHADAP KARAKTERISTIK KERTAS DENGAN PROSES SODA." Konversi 3, no. 2 (2014): 15. http://dx.doi.org/10.20527/k.v3i2.160.

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Abstrak- Kertas adalah sesuatu yang sering digunakan dalam kehidupan sehari-hari terdiri dari serat selulosa dan hemiselulosa yang terdapat di alam. Salah satu limbah yang dapat diolah menjadi bahan baku alternatif pembuatan kertas adalah sekam padi dan ampas tebu. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh komposisi sekam padi dan ampas tebu serta konsentrasi NaOH terhadap yield pulp yang dihasilkan. Kondisi operasi yang terbaik yang dihasilkan dari sekam padi dan serat ampas tebu oleh variasi konsentrasi NaOH juga diselidiki. Bahan baku kering dengan perbandingan liquor/crop

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del Río, José C. "Editorial- Valorization of Agroforest Crops for Biomass Utilization." Open Agriculture Journal 4, no. 1 (2010): 85–86. http://dx.doi.org/10.2174/1874331501004010085.

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There is a growing need to consider alternative agricultural strategies that move an agricultural industry focused on food production to one that also supplies the needs of other industrial sectors, such as paper, textiles, biofuels or added-value chemicals, in the context of the so-called lignocellulose biorefinery. Biorefineries use renewable raw materials to produce energy together with a wide range of everyday commodities in an economic manner. Decreasing our dependency on fossil fuel reserves and boosting rural development are important goals of modern society. Biorefineries are therefore

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HUBBE, MARTIN A., LOKENDRA PAL, and AHSEN EZEL BILDIK DAL. "Cationic emulsions of maleic anhydride derivatives of oleic acid and abietic acid for hydrophobic sizing of paper." June 2020 19, no. 6 (2020): 281–90. http://dx.doi.org/10.32964/tj19.6.281.

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Ordinary rosin sizing agents are mixtures of resin acids that include abietic acid and related com-pounds obtained from softwoods such as pine. Fatty acids, which are another byproduct of the kraft pulping of soft-wood species, also may have hydrophobic effects, but their use as sizing agents has seldom been considered. In the current study, abietic acid and oleic acid, in the absence of other components, were first modified by reaction with maleic acid anhydride. Then, the maleated derivatives (maleated oleic acid [MOA] and maleated abietic acid [MAA]), which were emulsified with cationic sta

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Ameram, Nadiah, Muhammad Afiq Che Agoh, Wan Farhana W. Idris, and Arlina Ali. "Chemical characterization of bamboo leaves (Gigantochloa albociliata and Dracaena surculosa) by sodium hydroxide treatment." F1000Research 7 (July 9, 2018): 1024. http://dx.doi.org/10.12688/f1000research.15036.1.

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Background: Dracaena surculosa and Gigantochloa albociliata leaves are different in morphology and appearance. Sodium hydroxide (NaOH) is widely used in pulping of wood for making paper or regenerated fibers. NaOH is used to separate lignin from cellulose fibers, and this treatment is needed to identify the characteristics of leaves. This study was conducted in order to investigate the characteristics of D. surculosa and G.albociliata species under NaOH treatment. Methods: NaOH was applied to the leaves for 8 hours. Treated and untreated bamboo leaves were analysed using FTIR analysis, in orde

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Tyagi, Preeti, Thomas Schrinner, Steffen Richter, Amiya Ray, and Harlad Grossmann. "Factors influencing polymeric granule-assisted dispersion of ultraviolet ink." January 2017 15, no. 1 (2016): 19–29. http://dx.doi.org/10.32964/tj15.1.19.

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The objective of this research is to identify and evaluate the factors influencing polymeric granuleassisted dispersion of ultraviolet (UV) ink particles. First time, granule-assisted alternative dispersion was observed during adsorption deinking. By optimizing and combining this alternative dispersion process with pulping, we aim to minimize the energy consumption in the dispersion process and thus reduce the environmental impact of the paper recycling process on carbon footprint. For experimental confirmation, a combination of printed paper and polymeric granules was selected such that ink d

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Hemmilä, Venla, Reza Hosseinpourpia, Stergios Adamopoulos, and Arantxa Eceiza. "Characterization of Wood-based Industrial Biorefinery Lignosulfonates and Supercritical Water Hydrolysis Lignin." Waste and Biomass Valorization 11, no. 11 (2019): 5835–45. http://dx.doi.org/10.1007/s12649-019-00878-5.

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Abstract Understanding the properties of any particular biorefinery or pulping residue lignin is crucial when choosing the right lignin for the right end use. In this paper, three different residual lignin types [supercritical water hydrolysis lignin (SCWH), ammonium lignosulfonate (A-LS), and sodium lignosulfonate (S-LS)] were evaluated for their chemical structure, thermal properties and water vapor adsorption behavior. SCWH lignin was found to have a high amount of phenolic hydroxyl groups and the highest amount of β-O-4 linkages. Combined with a low ash content, it shows potential to be us

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