Continuous efforts are being made in some countries for the recovery of crude glycerin (RG/CG) and castor oil cake (COC), the two byproducts of biodiesel production. These are expected to help, not only in addressing environmental safety, but also in adding value to those byproducts, which otherwise may go to waste. Finding ways to utilize those byproducts underlines the main objective of this study. This paper presents the evaluation of (i) COC, glycerin and banana and sugarcane fibers for moisture content; (ii) COC for structural and thermal properties; and (iii) CG for its chemical characteristics. The possibility of using COC and CG with the selected fibers as reinforcement in the development of bio-composites is attempted through thermo-molding. Results revealed enhanced mechanical properties for these composites. The obtained results are discussed in terms of the observed morphology.
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http://dx.doi.org/10.3390/ma9020076 | DOI Listing |
RSC Adv
January 2025
High-Tech Research and Development Center, Kim Il Sung University Pyongyang Democratic People's Republic of Korea
In this study, we synthesized a water-based, rosin-modified, polymerized oil (WRPO) an addition and polymerization reaction of dehydrated castor oil (DCO), rosin acid (RA), zinc resinate (ZR) and dehydrated castor oil acid (DCOA). Addition and polymerization reactions at 240 °C, followed by neutralization with ammonia, dissolution into butyl alcohol and subsequent dilution with water, were performed at varying DCOA contents of 10%, 20%, 30%, 35% and 40%. WRPO was mixed with butoxymethylmelamine (BMM), a curing agent, at a weight ratio of 80 : 20, and then cured for 2 hours at 130 °C.
View Article and Find Full Text PDFMacromol Rapid Commun
January 2025
School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
A series of biomass-based linear aliphatic polyesters are synthesized by combining sebacic acid (SA) (C10 diacid) and 1,18-octadecanedioic acid (OA) (C18 diacid) with a series of diols with varied alkyl chain lengths (C2 to C10 diols). SA and OA are obtainable from castor oil and palm oil, respectively. The reaction extent (polymerization extent) is high (≥96%) in all cases, and the number-average molecular weight (M) is 10 000-43 000 g mol after purification.
View Article and Find Full Text PDFChemSusChem
January 2025
TU Dortmund University: Technische Universitat Dortmund, Biochemical and Chemical Engineering, Emil-Figge-Straße 66, 44227, Dortmund, GERMANY.
Platform chemicals from renewable resources with broad applications are highly desirable, particularly for replacing fossil-based monomers. Bifunctional aliphatic ester-aldehydes, accessible via regioselective hydroformylation of unsaturated oleochemicals, can be converted into linear ω-amino/ω-hydroxy esters and dicarboxylic acids-key building blocks for biobased aliphatic polycondensates. However, their success hinges on efficient, economically viable production, with catalyst recycling being critical.
View Article and Find Full Text PDFIn the Rutaceae family is the biggest among all fruits, tradtionally used for several purposes due to its diverse ethnomedicinal, phytochemical, and pharmacological activities. Different portions of this plant have been used as sedatives and anti-inflammatory medications, as well as to treat coughs, fevers, asthma, diarrhea, ulcers, and diabetes. There is a scientific potential for the methanolic seed extract to contain bioactive compounds, similar to those found in other parts of the plant.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
CNBM Zhongyan Technology Co., Ltd., Beijing 100024, China.
This study aims to develop castable polyurethane suitable for applications on wet substrates or underwater construction. Polyurethanes were synthesized using various polyols with similar hydroxyl values, including poly(tetrahydrofuran) polyol, polyester polyol, castor oil-modified polyol, soybean oil-modified polyol, and cashew nut shell oil-modified polyol. The corresponding polyurethane curing products were evaluated for their underwater curing characteristics by volume expansion ratios and adhesion strength on dry and wet substrates, combined with analyses of reaction exothermic behavior, wetting properties on dry and wet substrates, interfacial tension, and microstructure characterization from the perspectives of reaction activity and water solubility.
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