Results 141 to 150 of about 40,793 (278)
Preparação e caracterização de catalisadores heterogêneos para a produção de biodiesel etílico [PDF]
, 2010 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2010Estudou-se, neste trabalho, a influência de diferentes métodos de preparação nas propriedades ...
Almerindo, Gizelle Inácio
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Robust β‐myrcene block copolymer elastomeric vitrimers
Polymer International, EarlyView.Myrcene‐based vitrimeric elastomers were compared: statistical (poly(styrene‐stat‐myrcene‐stat‐AAEMA)] versus ‘hard–soft’ diblock (poly(styrene)‐block‐poly(myrcene‐co‐AAEMA)). The diblock's ability to anchor the glassy poly(styrene) blocks in a self‐assembled microstructure was effective – leading to four times higher tensile stress and ten times ...
Chong Yang Du +2 more
wiley +1 more source
Determinação de dados experimentais de equilíbrio líquido-líquido para sistemas contendo éster metílico de ácidos graxos, glicerina bruta e metanol [PDF]
, 2014 Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Alimentos, Florianópolis, 2014Dados de equilíbrio líquido-líquido são fundamentais para predizer o comportamento de misturas ...
Bastiani, Daniele de
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Unsaturated biobased polyesters from bicyclic α‐pinene‐based diols
Polymer International, EarlyView.We present the synthesis of four biosourced unsaturated polyesters made from chiral terpene‐based diols and esters of renewable diacids. The resulting materials harbor a bicyclic pinene ring in their backbones which leads to enhanced thermal properties while still conferring susceptibility to enzyme hydrolysis for chains having a cis alkene.
Ganapathy Ranjani +4 more
wiley +1 more source
Journal of Polymer Science, EarlyView.Phosphorus‐modified TPUs are prepared by one‐step, solvent‐free reactive melt processing using phosphate‐ or phosphonate‐containing diols and PEG or PPG soft segments. Fire behavior and mechanical response depend strongly on both chemistries. Peak heat release rate decreases by up to 54%, but reduced tensile strength and V‐2 dripping behavior reveal a ...
Léa Gratier +4 more
wiley +1 more source
Design of biodiesel production processes by base-catalyzed transesterification
, 2012 A lot of efforts have been carried out to develop an alternative fuel for the current energy and environment questions. Biodiesel which is synthesized by transesterification of plant oils and animal fat is a real alternative fuel for its renewable and ...
Shi HY(史洪岩) +2 more
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Leucaena Oil Functionalized With Osmium Tetroxide as a Precursor for Polyol‐Based Polyurethane
Journal of Polymer Science, EarlyView.Leucaena leucocephala seed oil is converted into a hydroxyl‐functional biopolyol through OsO4‐mediated dihydroxylation. The resulting biopolyol shows a hydroxyl number of 160–175 mg KOH g−1 and is successfully used to produce flexible, open‐cell polyurethane foams, highlighting a renewable route for converting underutilized biomass into value‐added ...
Giovanni Miraveti Carriello +13 more
wiley +1 more source
Small, EarlyView.A sprayable MXene‐loaded thermosensitive hydrogel was developed for postoperative melanoma treatment. Molecular simulations combined with experimental analyses demonstrated that polymer composition regulates MXene oxidation. The optimized hydrogel effectively preserved photothermal performance under physiological conditions, enabling efficient near ...
Taek Hwang +15 more
wiley +1 more source
Oxaziridines: Versatile Reagents in Modern Organic Synthesis
The Chemical Record, EarlyView.Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra +2 more
wiley +1 more source
Biodiesel Production from Hevea brasiliensis Seeds: A Systematic Review
Vietnam Journal of Chemistry, EarlyView.ABSTRACT The Hevea brasiliensis (HB) species, also called the rubber tree, is currently cultivated worldwide for the extraction of latex, an input for rubber production. In addition, its seeds currently have few productive applications, despite their high oil content.
Sara Lüneburger +3 more
wiley +1 more source