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Articles de revues sur le sujet « Seed oil polyol »

Auteur : Grafiati

Publié le 7 juin 2025

Mis à jour le 2 août 2025

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1

Paciorek-Sadowska, Joanna, Marcin Borowicz, Bogusław Czupryński, Ewa Tomaszewska, and Joanna Liszkowska. "New bio-polyol based on white mustard seed oil for rigid PUR-PIR foams." Polish Journal of Chemical Technology 20, no. 2 (2018): 24–31. http://dx.doi.org/10.2478/pjct-2018-0019.

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AbstractA new bio-polyol based on white mustard oil (Synapis alba) and 2,2′-mercaptodiethanol (2,2′-MDE) was obtained. The synthesis was carried out by two-step method. In the first stage, the double bond of the unsaturated fatty acid residues was oxidized, and in the second step the epoxy rings were opened with 2,2’-MDE. The properties of the obtained bio-polyol for application as raw material in polyurethane-polyisocyanurate foams (PUR-PIR) - hydroxyl number, acid number, density, viscosity, pH, water content, FTIR,1H NMR and13C NMR were investigated. Based on the obtained results, foaming f

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Borowicz, Marcin, Joanna Paciorek-Sadowska, Jacek Lubczak, and Bogusław Czupryński. "Biodegradable, Flame-Retardant, and Bio-Based Rigid Polyurethane/Polyisocyanurate Foams for Thermal Insulation Application." Polymers 11, no. 11 (2019): 1816. http://dx.doi.org/10.3390/polym11111816.

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This article raised the issue of studies on the use of new bio-polyol based on white mustard seed oil and 2,2’-thiodiethanol (3-thiapentane-1,5-diol) for the synthesis of rigid polyurethane/polyisocyanurate (RPU/PIR) foams. For this purpose, new formulations of polyurethane materials were prepared. Formulations contained bio-polyol content from 0 to 0.4 chemical equivalents of hydroxyl groups. An industrial flame retardant, tri(2-chloro-1-methylethyl) phosphate (Antiblaze TCMP), was added to half of the formulations. Basic foaming process parameters and functional properties, such as apparent

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Sanda, Habib Abba, Muhammad Abbagoni Abubakar, Abdulhalim Musa Abubakar, Mamman Bashir, and Martin Stojchevski. "Utilization of Neem Seed Oil as Surfactant in the Production of Flexible and Rigid Polyurethane Foam." Emerging Technologies and Engineering Journal 1, no. 2 (2024): 40–52. http://dx.doi.org/10.53898/etej2024123.

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Extraction and processing of polyether polyols derived from petrochemicals, commonly used as surfactants during polyurethane foam (PUF) production, contribute to carbon emissions and raises the issue of long-term sustainability given that petrochemicals are non-renewable resources. Here, 5 mg and 4 mg of neem seed oil are employed to form flexible and rigid PUF, classified purposefully based on their divergent usage. To find an environmentally friendly replacement, flexible PUF whose mass, volume, density, compression, tensile strength, cream time, foam rise and rising time are 0.0047 kg m3, 1

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Chaochanchaikul, Kantima. "Influence of Natural Oil Polyol on Mechanical Properties of Polylactic Acid." Applied Mechanics and Materials 866 (June 2017): 208–11. http://dx.doi.org/10.4028/www.scientific.net/amm.866.208.

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The aim of this work was to improve the mechanical properties of polylactic acid (PLA) by natural oil polyol. Castor oil is natural oil polyol used for this work. It was directly extracted from castor seed and without chemical modification. The contents of castor oil were varied from 0 to 10 wt%. The effect of castor oil content on mechanical properties of PLA were evaluated by tensile and impact testings. Differential scanning calorimetry (DSC) and morphology analysis were used for explanation of the result. The result showed that the elongation at break and impact strength of PLA /10 wt% cas

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de, Haro Juan Carlos, JUAN F. RODRIGUEZ, Martínez Angel Pérez, and Franco Manuel Carmona. "Incorporation of azide groups into bio-polyols." Journal of Cleaner Production 138 (December 1, 2016): 77–82. https://doi.org/10.1016/j.jclepro.2016.05.012.

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The synthesis of polyols from renewable resources, primarily unsaturated vegetable oils, is increasing in importance in the polyurethane market. In this work, previously epoxidized grape seed oil was transformed into an azide-functionalized bio-polyol through a ringeopening reaction with sodium azide. The effectiveness of the ringeopening reaction was confirmed by analysing the depletion of the oxirane group content in the bulk mixture and by Fourier transform infrared spectroscopy (FT-IR). A pseudo-firstorder model was proposed for predicting the evolution of epoxide group

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Alshabebi, Ahmed S., Maher M. Alrashed, Lahssen El Blidi, and Sajjad Haider. "Preparation of Bio-Based Polyurethane Coating from Citrullus colocynthis Seed Oil: Characterization and Corrosion Performance." Polymers 16, no. 2 (2024): 214. http://dx.doi.org/10.3390/polym16020214.

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In this study, a new epoxidized oil from Citrullus colocynthis seed oil (CCSO) was obtained for a potential application in the formulation of polyurethane coatings. Initially, the fatty acid composition of CCSO was determined by gas chromatography–mass spectrometry (GC–MS). Subsequently, the epoxidation of CCSO was performed with in situ generated peracetic acid, which was formed with hydrogen peroxide (30 wt.%) and glacial acetic acid and catalyzed with sulfuric acid. The reaction was continued at a molar ratio of 1.50:1.0 of hydrogen peroxide to double bond (H2O2:DB) for 6 h at a controlled

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Hu, Yan Hong, Yun Gao, De Ning Wang, et al. "Rigid polyurethane foam prepared from a rape seed oil based polyol." Journal of Applied Polymer Science 84, no. 3 (2002): 591–97. http://dx.doi.org/10.1002/app.10311.

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Okoye, Sylvia Ijeoma, Abubakar Mohammed, and Sofeme Faiz Ndagana. "DEVELOPMENT OF POLYURETHANE FOAM USING BIOBASEDPOLYOL: EFFECT OF Ximenia americana SEED OIL POLYOL ON SOME PROPERTIES OF POLYURETHANE FOAM." FUW Trends in Science & Technology Journal 6, no. 2 (2021): 650–53. https://doi.org/10.5281/zenodo.15379192.

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Polyurethane foam (PUF) is used outstandingly for various applications, which is manufactured by propelling liquid isocyanate-polyol mixture to form foams with small proportions of silicon oil, stannuoesoctate, dimethyethylamine, methylene chloride and distilled water. In this study, PU foams were prepared using different levels biopolyol concentration, and the effects of biobasedpolyol level on the physico-chemical properties of the foams were investigated. Results from this research showed that biobasedpolyol level had important effects on physico-chemical properties of the biobased PU foams

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Kamarudin, Nurazreen Shazwin, Harumi Veny, Nailah Fasihah Sidek, Faisal Abnisa, Rozana Azrina Sazali, and Noorhaliza Aziz. "Investigation on Synthesis of Trimethylolpropane (TMP) Ester from Non-edible Oil." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 3 (2020): 808–17. http://dx.doi.org/10.9767/bcrec.15.3.8862.808-817.

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Trimethylolpropane (TMP) ester is an eco-friendly lubricant that fully biodegradable and known as bio lubricant. In this study, TMP ester was produced from waste cooking oil and rubber seed oil through a two-step synthesis approach. The reaction is two stages transesterifications, in which the waste cooking oil and the rubber seed oil were first transesterified with methanol to produce methyl ester, followed by transesterification with TMP using para-Toluenesulfonic acid (p-TSA) as catalyst. Various effects of operating conditions were observed, such as reaction time, temperature and molar rat

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Ahir, Mansi, Chandan Bodhak, and Ram K. Gupta. "Harnessing Enhanced Flame Retardancy in Rigid Polyurethane Composite Foams through Hemp Seed Oil-Derived Natural Fillers." Polymers 16, no. 11 (2024): 1584. http://dx.doi.org/10.3390/polym16111584.

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Over the past few decades, polymer composites have received significant interest and become protagonists due to their enhanced properties and wide range of applications. Herein, we examined the impact of filler and flame retardants in hemp seed oil-based rigid polyurethane foam (RPUF) composites’ performance. Firstly, the hemp seed oil (HSO) was converted to a corresponding epoxy analog, followed by a ring-opening reaction to synthesize hemp bio-polyols. The hemp polyol was then reacted with diisocyanate in the presence of commercial polyols and other foaming components to produce RPUF in a si

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Thuy, Nguyen Thi, and Pham Ngoc Lan. "A Study on Making Rigid Polyurethane Foams from Vietnam Rubber Seed Oil-Based Polyol by Using Water as a Single Blowing Agent." International Journal of Polymer Science 2021 (January 16, 2021): 1–11. http://dx.doi.org/10.1155/2021/6638109.

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In this work, for making rigid polyurethane foams, only water was used to serve as a blowing agent. Vietnam rubber seed oil-based polyol was also used. Following our previous research results, water content was fixed at 4 wt.% and glycerol content at 3 wt.%, as compared to biopolyol. The effect of the NCO/OH ratio, main catalyst (dibutyltin dilaurate), cocatalyst (triethylamine), and surfactant content as well as the surfactants on performances of foams was investigated through compressive strength, density, cell size, and size distribution. A suitable formulation for making foam by using biop

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de, Haro Juan Carlos, Pedrajas Daniel López, Martínez Angel Pérez, JUAN F. RODRIGUEZ, and Franco Manuel Carmona. "Synthesis of rigid polyurethane foams from phosphorylated biopolyols." Environmental Science and Pollution Research 26, no. 4 (2019): 3174–83. https://doi.org/10.1007/s11356-017-9765-z.

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Renewable resources are playing a key role on the synthesis of biodegradable polyols. Moreover, the incorporation of covalently linked additives is increasing in importance in the polyurethane (PU) market. In this work, previously epoxidized grape seed oil and methyl oleate were transformed into phosphorylated biopolyols through an acid-catalyzed ring-opening hydrolysis in the presence of H <sub>3</sub> PO <sub>4</sub> . The formation of phosphate polyesters was confirmed by FT-IR and <sup>31</sup> P-NMR. However, the synthesis of a high-quality PU rigid foam was not p

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Adewuyi, Adewale, Rotimi A. Oderinde, B. V. S. K. Rao, and R. B. N. Prasad. "Synthesis of polyol from the seed oil of Lonchocarpus cyanescens as potential lubricant." Lubrication Science 24, no. 5 (2012): 228–37. http://dx.doi.org/10.1002/ls.1176.

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Gaddam, Sashivinay Kumar, and Aruna Palanisamy. "Anionic waterborne polyurethane dispersions from maleated cotton seed oil polyol carrying ionisable groups." Colloid and Polymer Science 294, no. 2 (2015): 347–55. http://dx.doi.org/10.1007/s00396-015-3787-1.

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Tsouko, Erminta, Aikaterini Papadaki, Miguel Carmona-Cabello, et al. "Bioconversion of Agro-Residues into Microbial Oil-Based Oleochemicals Employing Packed Bed Bioreactor." Sustainability 14, no. 21 (2022): 14135. http://dx.doi.org/10.3390/su142114135.

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Lignocellulosic waste-streams are resources worth investigating to produce value-added bioproducts due to their low-cost, renewability, versatility, and abundance. This study evaluated five Zygomycota strains as potential oleaginous microorganisms for direct bioconversion of cakes derived from the vegetable-oil-milling industry into microbial oil. Solid-state fermentation (SSF) conditions in tray bioreactors revealed that temperature, moisture content, and substrate affected lipid production and fatty acids composition. Employing SSF, under optimal conditions (30 °C, 65% initial moisture conte

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Tortoioli, Samuele, Luisa Paolotti, Francesco Romagnoli, Antonio Boggia, and Lucia Rocchi. "Environmental Assessment of Bio-Oil Transformation from Thistle in the Italian Context: An LCA Study." Environmental and Climate Technologies 24, no. 3 (2020): 430–46. http://dx.doi.org/10.2478/rtuect-2020-0114.

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Abstract The present study is a cradle-to-gate Life Cycle Assessment of a hypothetical production process of rigid polyurethane foam obtained from thistle seed oil, grown on the marginal soils of the Umbria region, Italy. Thistle is a particularly rustic crop, suitable for difficult soil and climatic conditions that allow its cultivation in the Mediterranean area on marginal lands and with only the water supply of the autumn-spring rains. Life Cycle Inventory was built on up-to-date inventory for thistle production, while experimental data for polyol and synthesis were obtained from literature

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Tortoioli, Samuele, Luisa Paolotti, Francesco Romagnoli, Antonio Boggia, and Lucia Rocchi. "Environmental Assessment of Bio-Oil Transformation from Thistle in the Italian Context: An LCA Study." Environmental and Climate Technologies 24, no. 3 (2020): 430–46. http://dx.doi.org/10.2478/rtuect-2020-0114.

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AbstractThe present study is a cradle-to-gate Life Cycle Assessment of a hypothetical production process of rigid polyurethane foam obtained from thistle seed oil, grown on the marginal soils of the Umbria region, Italy. Thistle is a particularly rustic crop, suitable for difficult soil and climatic conditions that allow its cultivation in the Mediterranean area on marginal lands and with only the water supply of the autumn-spring rains. Life Cycle Inventory was built on up-to-date inventory for thistle production, while experimental data for polyol and synthesis were obtained from literature,

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Malewska, Elżbieta, Maria Kurańska, Maria Tenczyńska, and Aleksander Prociak. "Application of Modified Seed Oils of Selected Fruits in the Synthesis of Polyurethane Thermal Insulating Materials." Materials 17, no. 1 (2023): 158. http://dx.doi.org/10.3390/ma17010158.

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The use of alternative raw material sources in polyurethane chemistry is necessary given the limited supply of fossil fuels, their rising prices and the concern for sustainability. The production of biopolyols from edible vegetable oils such as rapeseed oil, soybean oil or sunflower oil is often proposed. In order to avoid conflict with the global food economy, non-edible or waste oils are hoped to find application in chemical synthesis. The possibility of using oils from selected fruit seeds to obtain biopolyols is analyzed in this manuscript. Five biopolyols were obtained from watermelon, ch

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Sengupta, Anupam, and Saumyapriya P. Basu. "Polyol surfactants derived from moringa seed oil for potential use in the pharmaceutical industry." Journal of Applied Chemistry and Biotechnology 26, no. 1 (2007): 140–44. http://dx.doi.org/10.1002/jctb.5020260123.

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NJEXTR. "DEVELOPMENT OF BIOBASED FOAM FROM JATROPHA SEED OIL POLYOL: EFFECT OF ISCOYANATE ON SOME PHYSICO-CHEMICAL PROPERTIES OF THE BIOBASED FOAM." Nigerian Journal of Engineering Science and Technology Research 9, no. 2 (2023): 173–81. https://doi.org/10.5281/zenodo.13932871.

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Designers and manufacturers need to study the appropriate factors that affect the polyurethane foams production and full usage in order to exploit their full potential because of the continuous growth of their usage. This work studied the effectiveness of Toluene Isocyanate (TDI) on the tensile strengths, compression set value, elongation at break, density support factor and the hardness of the biobased polyurethane foam. The chemicals (Polyol, Dimethyl ethyl amine, Silicone oil, Methylene chloride, Tin catalyst and Water) were weighed in separate containers and added into the mixing vessel. V

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Borowicz, Marcin, Marek Isbrandt, Joanna Paciorek-Sadowska, and Paweł Sander. "Comparing the Properties of Bio-Polyols Based on White Mustard (Sinapis alba) Oil Containing Boron and Sulfur Atoms Obtained by Various Methods and Checking Their Influence on the Flammability of Rigid Polyurethane/Polyisocyanurate Foams." Materials 16, no. 9 (2023): 3401. http://dx.doi.org/10.3390/ma16093401.

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The article compares the properties of bio-polyols obtained from white mustard (Sinapis alba) seed oil, which contain boron and sulfur atoms. Each of the bio-polyols was prepared by a different method of testing the efficiency of the incorporation of boron and sulfur atoms. All synthesis methods were based on the epoxidation of unsaturated bonds followed by the opening of epoxy rings by compounds containing heteroatoms. Two of the bio-polyols were subjected to additional esterification reactions of hydroxyl groups with boric acid or its ester. Three new bio-polyols were obtained as a result of

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Nia, Samaneh Taghvaei, and Mir Mohammad Alavi Nikje. "Novel bio-polyol synthesis based on date seed oil for low-density rigid polyurethane-polyisocyanurate foams." Industrial Crops and Products 223 (January 2025): 120152. https://doi.org/10.1016/j.indcrop.2024.120152.

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Mukke, Atul P., and Aarti P. More. "Custard apple seed oil-based polyesteramide polyol- a precursor for layered double hydroxide (LDH)-modified polyurethane coatings." Industrial Crops and Products 214 (August 2024): 118606. http://dx.doi.org/10.1016/j.indcrop.2024.118606.

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Paciorek-Sadowska, Joanna, Marcin Borowicz, Bogusław Czupryński, Ewa Tomaszewska, and Joanna Liszkowska. "Oenothera biennis seed oil as an alternative raw material for production of bio-polyol for rigid polyurethane-polyisocyanurate foams." Industrial Crops and Products 126 (December 2018): 208–17. http://dx.doi.org/10.1016/j.indcrop.2018.10.019.

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Liu, Xuan, Paul W. Robinson, Monica A. Madore, Guy W. Witney, and Mary Lu Arpaia. "`Hass' Avocado Carbohydrate Fluctuations. II. Fruit Growth and Ripening." Journal of the American Society for Horticultural Science 124, no. 6 (1999): 676–81. http://dx.doi.org/10.21273/jashs.124.6.676.

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Changes in soluble sugar and starch reserves in avocado (Persea americana Mill. on `Duke 7' rootstock) fruit were followed during growth and development and during low temperature storage and ripening. During the period of rapid fruit size expansion, soluble sugars accounted for most of the increase in fruit tissue biomass (peel: 17% to 22%, flesh: 40% to 44%, seed: 32% to 41% of the dry weight). More than half of the fruit total soluble sugars (TSS) was comprised of the seven carbon (C7) heptose sugar, D-mannoheptulose, and its polyol form, perseitol, with the balance being accounted for by t

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Daniel, J. M. E. Purba, C. Saleh, and A. R. Magdaleni. "Synthesis of polyol from Bintaro seed oil (Cerbera manghas L.) as lubricant base by epoxidation reaction and insitu opening oxirane." Journal of Physics: Conference Series 1277 (July 2019): 012016. http://dx.doi.org/10.1088/1742-6596/1277/1/012016.

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Sidra, Shazia Tabasum, Khalid Mahmood Zia, Bushra Parveen, and Muhammad Tahir Hussain. "A novel water borne green textile polyurethane dispersions finishes from cotton (Gossypium arboreum) seed oil based polyol used in modification of cellulosic fabrics." Carbohydrate Polymer Technologies and Applications 2 (December 2021): 100170. http://dx.doi.org/10.1016/j.carpta.2021.100170.

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Thuy, Nuyen Thi, Trinh Quoc Vuong, and Vu Minh Duc. "Effects of glycerol and NCO/OH on rigid polyurethane foam based on bio-polyol of rubber seed oil using water as blowing agent." Vietnam Journal of Chemistry 58, no. 3 (2020): 392–97. http://dx.doi.org/10.1002/vjch.202000008.

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McDaniel, Gary L., William E. Klingeman, Willard T. Witte, and Phillip C. Flanagan. "Choice of Adjuvant with Halosulfuron Affects Purple Nutsedge Control and Nursery Crop Tolerance." HortScience 36, no. 6 (2001): 1085–88. http://dx.doi.org/10.21273/hortsci.36.6.1085.

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One-half (18 g·ha-1 a.i.) and three-fourths (27 g·ha-1 a.i.) rates of halosulfuron (Manage®, MON 12051) were combined with adjuvants and evaluated for effectiveness in controlling purple nutsedge (Cyperus rotundus L.) and for phytotoxic responses exhibited by two kinds of container-grown ornamental plants. Adjuvants included X-77®, Scoil®, Sun-It II®, Action “99”®, and Agri-Dex®. By 8 weeks after treatment (WAT), halosulfuron combined with X-77®, Agri-Dex®, or Action “99”® at the lower halosulfuron rate provided <90% purple nutsedge suppression. In contrast, Sun-It II® provided 100% control

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Leskovar, Daniel I., and A. Kipp Boales. "Azadirachtin: Potential Use for Controlling Lepidopterous Insects and Increasing Marketability of Cabbage." HortScience 31, no. 3 (1996): 405–9. http://dx.doi.org/10.21273/hortsci.31.3.405.

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Azadirachtin (ATI), an insect growth regulator derived from extracts of neem (Azadirachta indica A. Juss) seed, was evaluated for the control of cabbage looper (Trichoplusia ni Hübner), diamondback moth (Plutella xylostella L.), and silverleaf whitefly (Bemisia argentifolii Bellows and Perring) in cabbage (Brassica oleracea L. Capitata Group) grown in southwestern Texas. In Fall 1992, ATI was tested with the a.i. at 0, 22, 33 and 44 g·ha–1. In 1993, ATI was evaluated at 33 g·ha–1 and in combination with M-Pede (1%, v/v), an organic insecticide based on potassium salts of fatty acids at 49%. T

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Abril-Milán, Diana, Oscar Valdés, Yaneris Mirabal-Gallardo, Alexander F. de la Torre, Carlos Bustamante, and Jorge Contreras. "Preparation of Renewable Bio-Polyols from Two Species of Colliguaja for Rigid Polyurethane Foams." Materials 11, no. 11 (2018): 2244. http://dx.doi.org/10.3390/ma11112244.

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In this study, we investigated the potential of two non-edible oil extracts from seeds of Colliguaja integerrima (CIO) and Colliguaja salicifolia (CSO) to use as a renewable source for polyols and, eventually, polyurethane foams or biodiesel. For this purpose, two novel polyols from the aforementioned oils were obtained in a one-single step reaction using a mixture of hydrogen peroxide and acetic acid. The polyol derivatives obtained from the two studied oils were characterized by spectral (FTIR, 1H NMR, and 13C NMR), physicochemical (e.g., chromatographic analysis, acid value, oxidizability v

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Polaczek, Krzysztof, and Maria Kurańska. "Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane Foams." Materials 15, no. 24 (2022): 8891. http://dx.doi.org/10.3390/ma15248891.

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We report on the development of open-cell polyurethane foams based on bio-polyols from vegetable oils: hemp seed oil, oilseed radish oil, rapeseed oil and used rapeseed cooking oil. The crude oils were pressed from seeds and subjected to an optimal solvent-free epoxidation process. Bio-polyols were obtained by a ring-opening reaction using diethylene glycol and tetrafluoroboric acid as catalysts. The resultant foams were analysed in terms of their apparent density, thermal conductivity coefficient, mechanical strength, closed cell content, short-term water absorption and water vapour permeabil

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Ekkaphan, Paweena, Sarintip Sooksai, Nuanphun Chantarasiri, and Amorn Petsom. "Bio-Based Polyols from Seed Oils for Water-Blown Rigid Polyurethane Foam Preparation." International Journal of Polymer Science 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/4909857.

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The preparation of water-blown rigid polyurethane (RPUR) foams using bio-based polyols from sesame seed oil and pumpkin seed oil has been reported. Polyols synthesis involved two steps, namely, hydroxylation and alcoholysis reaction. FTIR, NMR, and ESI-MS were used to monitor the process of the synthesized polyols and their physicochemical properties were determined. The resulting polyols have OH number in the range of 340–351 mg KOH/g. RPUR foams blown with water were produced from the reaction of biopolyols with commercial polymeric methylene diphenyl diisocyanate (PMDI). The proper PUR form

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Jakobović, Mario, Stela Jokić, Melita Lončarić, Snježana Jakobović, Krunoslav Aladić, and Darko Kiš. "Effect of drying method on supercritical CO2 extraction of grape seed oil." Poljoprivreda 25, no. 1 (2019): 81–88. http://dx.doi.org/10.18047/poljo.25.1.12.

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Aim of this study was to monitor the influence of drying method (naturally and chamber drying) and different sample preparation on supercritical CO2 extraction of oil from three grape seed varieties (Graševina, Zweigelt, Cabernet Sauvignon). The highest oil content was obtained from naturally dried screened and washed seeds of red variety Cabernet Sauvignon (14.85%) and lowest from chamber dried screened seeds of white variety Graševina (7.67%). Peroxide value ranged from 0.36 to 1.77 mmol O2/kg oil, free fatty acids 0.28-8.0%, and insoluble impurities 0.05-0.28%. Determined fatty acids were p

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Argyropoulos, John, Paul Popa, Gary Spilman, Debkumar Bhattacharjee, and William Koonce. "Seed oil based polyester polyols for coatings." Journal of Coatings Technology and Research 6, no. 4 (2009): 501–8. http://dx.doi.org/10.1007/s11998-008-9154-0.

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Samuel, A. E., I. C. Eremosele, S. Y. Kamba, and D. S. Samaila. "Production of Polyurethane Elastomers from Ximenia americana L (Wild Olive) Seed Oil and Diisocyanates." Journal of Applied Sciences and Environmental Management 27, no. 11 (2023): 2581–90. http://dx.doi.org/10.4314/jasem.v27i11.30.

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Seed oils readily undergo derivatization by alcoholysis to yield biodegradable polyols and Ximenia americana plant from the family of Olacaeae has oily seeds. Hence, the objective of this paper is to assess the production of polyurethane elastomers from Ximenia americana L (Wild Olive) Seed Oil with diisocyanates, namely, hexamethylene diisocyanate (HDI), toluene diisocyanate (TDI) and 4,4’-methylene diphenyl diisocyanate (MDI) respectively using standard procedure and characterized by Fourier-Transform Infrared Spectroscopy (FTIR), Instron Tensile Testing Machine and Thermogravimetric Analyze

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Ranogajec, Ljubica, Manda Antunović, Bojan Stipešević, and Ivana Varga. "A Current Status and Production Potential of Industrial Hemp in Croatia, Based on a SWOT Analysis." Poljoprivreda 30, no. 2 (2024): 56–63. https://doi.org/10.18047/poljo.30.2.7.

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In the past, Croatia had industrial hemp cultivation mainly for fiber obtainment. Recently, the interest in seed and flower production has risen worldwide. Industrial hemp is interesting in many aspects, so the study evaluates the current status and potential of production using a SWOT analysis. The average harvested area under industrial hemp in Croatia was around 1,000 ha (2014 – 2023), with a seed yield of 0.8 t ha-1. In addition to the favorable agroecological conditions, a considerable num-ber of products and the medicinal properties of the plant provide most of the strength to the produc

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Collantes, Yesusa, and Oscar Perales-Perez. "Effect of Crystal Size on the Structural and Functional Properties of Water-Stable Monodisperse ZnO Nanoparticles Synthesized Via a Polyol-Route." MRS Proceedings 1551 (2013): 117–22. http://dx.doi.org/10.1557/opl.2013.901.

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ABSTRACT:Highly monodispersed ZnO nanoparticles (NPs) have been synthesized in polyol medium. The control on crystal size was attempted at 180°C by monitoring the heating rate of reacting solutions and the cooling rate (quenching) at the end of the reaction time. The possibility to promote crystal growth by heterogeneous nucleation was also evaluated; in this approach, pre-synthesized 5-nm pure ZnO nanocrystals were used as seeds in fresh Zn-polyol solutions at suitable seeds/ZnO w/w ratios. As-synthesized samples were characterized by X-ray diffraction (XRD), Transmission electron microscopy

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Adewole, Jimoh K., and A. S. Sultan. "A Study on Processing and Chemical Composition of Date Pit Powder for Application in Enhanced Oil Recovery." Defect and Diffusion Forum 353 (May 2014): 79–83. http://dx.doi.org/10.4028/www.scientific.net/ddf.353.79.

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Studies were conducted on method of processing and chemical compositions of date pit for possible applications in enhanced oil recovery. Date seed from the eastern province of Saudi Arabia were washed by sonication and sun dried. The dried seeds were ground, de-oiled and made into solutions using alkaline. Physicochemical properties and chemical compositions of the de-oiled date seed powder were investigated using SEM and FTIR. The properties of the powder solutions were investigated by evaluating their viscosifying properties. Results of elemental analysis showed that the powder contains 57.4

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Galić Subašić, Darija, Mladen Jurišić, Irena Jug, Marko Josipović, Darko Kiš, and Irena Rapčan. "THE EFFECT OF IRRIGATION AND NITROGEN FERTILIZATION ON THE SOYBEAN SEED YIELD, WITH A CORRELATION TO THE PROTEIN AND OIL CONCENTRATION." Poljoprivreda 26, no. 2 (2020): 50–57. http://dx.doi.org/10.18047/poljo.26.2.6.

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The paper presents the result of a triennial field experiment (2013‒15), aiming to determine the influence of irrigation, nitrogen fertilization, and cultivars, as well as their interactions on the yield and chemical properties of the soybean seeds. Four soybean cultivars (Lucija, Vita, Ika and Tena) of different maturity groups were investigate as a sub‐subplot factor (C). The main plot factor (A - irrigation) resulted in a statistically very significant (P≤0.01) seed yield in all three years, and it was found out by an analysis of variance. The subplot factor (B - nitrogen fertilization) had

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Kotturu, Chandra Mouli VV, V. Srinivas, V. Vandana, Kodanda Rama Rao Chebattina, and Y. Seetha Rama Rao. "Investigation of tribological properties and engine performance of polyol ester–based bio-lubricant: Commercial motorbike engine oil blends." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 5 (2019): 1304–17. http://dx.doi.org/10.1177/0954407019878359.

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This article explores the influence of blending polyol ester–based bio-lubricant with commercial lubricant on engine performance. Polyol esters trimethylolpropane ester and pentaerythritol ester were prepared from Calophyllum inophyllum seeds. Extreme care was taken to minimize deterioration of physicochemical properties when blending bio-lubricant with commercial oil. Blending of bio-lubricant with commercial oil was carried out in 10%, 15%, 20% and 25% volume. The test oils were first investigated for wear and friction properties on a four-ball wear tester. Optimum blending ratio was calcula

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Zhou, Juan, Shanshan Wu, Chenxing Zhang, et al. "High-performance bio-based foam from agricultural waste luffa seed oil polyols." Materials Today Communications 41 (December 2024): 110438. http://dx.doi.org/10.1016/j.mtcomm.2024.110438.

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Ghasemlou, Mehran, Fugen Daver, Elena P. Ivanova, and Benu Adhikari. "Polyurethanes from seed oil-based polyols: A review of synthesis, mechanical and thermal properties." Industrial Crops and Products 142 (December 2019): 111841. http://dx.doi.org/10.1016/j.indcrop.2019.111841.

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Leszczyńska, Milena, Elżbieta Malewska, Joanna Ryszkowska, et al. "Vegetable Fillers and Rapeseed Oil-Based Polyol as Natural Raw Materials for the Production of Rigid Polyurethane Foams." Materials 14, no. 7 (2021): 1772. http://dx.doi.org/10.3390/ma14071772.

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The reported study concerns the introduction of renewable raw materials into the formulation of rigid polyurethane foams in the quest for the sustainable development of polymer composites. In this study, rigid polyurethane foam composites were prepared using 75 wt.% of rapeseed oil-based polyol and 15 parts per hundred parts of polyol (php) of natural fillers such as chokeberry pomace, raspberry seeds, as well as hazelnut and walnut shells. The influence of the used raw materials on the foaming process, structure, and properties of foams was investigated using a FOAMAT analyzer and a wide sele

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Doke, Ranjeet B., Pavan M. Paraskar, Yogeshsing N. Rajput, and Ravindra D. Kulkarni. "Synthesis and Characterization of Green Polyurethane Coatings Derived from Niger‐Seed‐Oil‐Based Polyesteramide Polyols." European Journal of Lipid Science and Technology 124, no. 2 (2021): 2100171. http://dx.doi.org/10.1002/ejlt.202100171.

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Piazza, George J., and Thomas A. Foglia. "Preparation of fatty amide polyols via epoxidation of vegetable oil amides by oat seed peroxygenase." Journal of the American Oil Chemists' Society 82, no. 7 (2005): 481–85. http://dx.doi.org/10.1007/s11746-005-1097-y.

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Vijayan, Jyothy G., Akshatha Chandrashekar, Jineesh AG, T. Niranjana Prabhu, and Prashantha Kalappa. "Polyurethane and its composites derived from bio-sources: Synthesis, characterization and adsorption studies." Polymers and Polymer Composites 30 (January 2022): 096739112211103. http://dx.doi.org/10.1177/09673911221110347.

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Polyols from chaulmoogra seed oil and grape seed oil were prepared by epoxidation and ring opening of oxirane ring using lactic acid in nitrogen atmosphere with a control over their functionality. Nanocellulose was derived from Desmostachya Bipinnata grass leaves and further surface functionalized. Modified nanocellulose was used as filler to prepare porous flexible bio-based polyurethane nanocomposites via in-situ polymerization. Adsorption of malachite green (MG) dye from wastewater using the prepared polyurethane composites was carried out. The effect of varying factors such as weight perce

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Paponja, Ivan, Vlatka Rozman, Pavo Lucić, and Anita Liška. "A Pilot Study of Natural Formulation Activity in the Protection of Stored Wheat and Barley Against the Stored-Product Insects." Poljoprivreda 27, no. 2 (2021): 43–49. http://dx.doi.org/10.18047/poljo.27.2.5.

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The stored-product insects are one of the major causes of losses in the stored cereals. Most of control measures still rely on a synthetic pesticide usage, but due to its negative side effects on the goods, human health, and the environment, there is an urgent need for an alternative control. A natural formulation based on the diatomaceous earth (DE) SilicoSec®, enhanced with the botanicals (essential oil lavender, corn oil, and bay leaves dust) and the silica gel was developed. The aim of the study was to test the activity of the developed formulation as a postharvest protectant of seed wheat

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Varsha Laxman Jakune, Varsha Siddheshwar Tegeli, and Misbah Sultana Abdul Kausar Badewale. "A review on vegetable oil based biodegradable polymers." International Journal of Science and Research Archive 8, no. 1 (2023): 214–24. http://dx.doi.org/10.30574/ijsra.2023.8.1.0020.

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The reviewed work addressed the shift in focus from conventional polymers to bio-based and renewable polymers. This extensively discussed the values of various fatty acid components present in the oils and polymers. Areas of application of the thermosetting polymers obtained from plant seed oils were discussed. Non-biodegradable polymers are causing severe damage to the environment. To counter this, need of biodegradable polymers is gaining a rapid growth in numbers, in their applications and quantities used. In this manuscript, we have briefly described important vegetable oil derived materia

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Klir, Željka, Josip Novoselec, and Zvonko Antunović. "An overview on the use of hemp (Cannabis sativa L.) in animal nutrition." Poljoprivreda 25, no. 2 (2019): 52–61. http://dx.doi.org/10.18047/poljo.25.2.8.

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The aim of the paper was to research the possibility of using hemp (Cannabis sativa L.) in animal nutrition. In animal nutrition, hemp seeds can be used, as well as hempseed cake, and hemp oil as supplement in feed mixtures. Hemp seeds are rich in crude protein and crude fat with adequate proportions of linoleic (LA, C18:2 n-6) and linolenic (ALA, C18:3 n-3) acid. The addition of hemp oil in diets of dairy goats increased milk fat with increasing conjugated fatty acid (CLA) and polyunsaturated fatty acids (PUFA) proportions. When feeding ewes with addition of hemp seeds (180 g/day) or hempseed

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