Results 121 to 130 of about 51,547 (253)
Journal of Polymer Science, EarlyView.The curing of epoxidized linseed oil with citric, tartaric, and malic acid–based eutectic hardeners is compared to reveal how acid functionality, hydroxyl content, and molecular geometry govern activation energy, reaction rates, and network rigidity.
Mona Jamali Moghadam Siahkali +3 more
wiley +1 more source
Acylation des nanocelluloses en milieu aqueux par transestérification des esters de vinyle et utilisation comme charge dans le caoutchouc naturel [PDF]
, 2017 The objective of this research work consists in the elaboration of novel composite materials (elastomers, adhesives) using nanocelluloses (CNC and NFC) as biobased reinforcing fillers.
Dhuiège, Benjamin
core +2 more sources
Biocatalyseurs enzymatiques supportés dédiés à la production en continu de biodiesel [PDF]
, 2012 Dossiers Les Techniques de l'Ingénieur IN150Nos sociétés sont confrontées à une demande croissante en combustibles biosourcés non fossiles. Les biodiesels, obtenus par transestérification de triesters, offrent une alternative réelle.
BACKOV, Rénal
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Kinetics of ε‐Caprolactone Ring Opening Polymerization: Experimental and Modeling Study
Journal of Polymer Science, EarlyView.We present a multi‐scale model for the ring‐opening polymerization of ε‐caprolactone to polycaprolactone (PCL), approximating final melt properties. We conducted batch experiments at various temperatures and reactant ratios. Using this data, we determined the kinetic parameters.
Jakub Staś +6 more
wiley +1 more source
Imobilização de lipases em materiais poliméricos [PDF]
, 1999 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.Neste trabalho, lipases de várias fontes foram imobilizadas nos polímeros poli(óxido de etileno) (PEO), poli(ácido acrílico) (Carbopol) e blendas ...
Crespo, Janaina da Silva
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Valorisation des huiles de friture usagées en biodiesel par transestérification [PDF]
, 2020 Les déchets organiques composées essentiellement de triglycérides peuvent être convertis en biocarburant pour les moteurs. Pour cela,une adaptation des propriétés de l’huile est requise.
KHALFOUN, Seloua
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Proteins: Structure, Function, and Bioinformatics, EarlyView.ABSTRACT Phospholipase D (PLD) catalyzes the hydrolysis of phospholipids to generate phosphatidic acid and free head groups such as choline. Among bacterial PLD enzymes, Streptomyces chromofuscus PLD (SchPLD), a member of the alkaline phosphatase D (PhoD) superfamily, exhibits unique Ca2+‐dependent phospholipase activity.
Yoshiaki Yasutake +6 more
wiley +1 more source
Resources Chemicals and MaterialsThe catalytic performance of different acidic catalysts for diethyl oxalate synthesis from the one-step transesterification of dimethyl oxalate and ethanol was evaluated.
Naiwen Zhang +6 more
doaj +1 more source
Sustainable Development, EarlyView.ABSTRACT Sustainable development transforms production systems, requiring integrated environmental, social, and economic strategies. Energy systems are key agro‐industrial supply chains in developing countries. Brazil's soybean supply chain impacts Gross Domestic Product, mainly through exports.
Aline Veronese da Silva +3 more
wiley +1 more source
Synthèse enzymatique d'esters éthyliques d'huiles végétales pour la production de biodiesel à l'aide de lipases végétales issues de la biomasse africaine [PDF]
, 2014 Le biodiesel est un biocarburant, obtenu par transestérification de l'huile végétale avec un alcool et généralement en présence d'un catalyseur. En fonction que l'alcool utilisé au cours de la réaction de transestérification soit l'éthanol ou le méthanol,
Moussavou Mounguengui, Rédéo Wilfried
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