Results 131 to 140 of about 34,563 (277)
Hydrolysis and transesterification of parabens in an aqueous solution in the presence of glycerol and boric acid [PDF]
In a solution containing 0.067% methylparaben, 0.033% propylparaben, 3.4% glycerol and 2.0% boric acid, concentrations of both parabens, 4 hydroxybenzoic acid and 2,3-dihydroxypropyl 4-hydroxybenzoate were monitored for up to 68 months storage.
Marie Marečkova +2 more
core
Monitoring the transesterification reaction with laser spectroscopy
, 2011 The production of biodiesel is rapidly expanding around the world, making it more important to produce this fuel with more energy efficiency. In this paper, we observed a series of transesterification reactions of soy bean oil and methyl alcohol ...
Lima da Silva, Isaac Newton +3 more
core +1 more source
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
Bio-diesel, derived from the transesterification of vegetable oils or animal fats with simple alcohols, has attracted more and more attention recently. As a cleaner burning diesel alternative, bio-diesel claims to have many attractive features including:
Abuhabaya, Abdullah
core
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
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
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
Enhanced Biocatalysis in Nanofluidic Membrane Reactors With Goldilocks Nanopores for Enzymes
Small, EarlyView.We show that enzyme confinement within the three‐dimensionally interconnected nanochannels of a polyurea molecular network membrane, featuring pore‐size tunability to match the enzyme size, enables a highly active nanofluidic reactor platform. Stable continuous‐flow operation for >200 h and a 30 000‐fold increase in specific space‐time yield over ...
Wangsuk Oh, Ji‐Woong Park
wiley +1 more source
Model structure analysis and control of biodiesel transesterification processes
, 2013 Considering a complex multivariable nonlinear biodiesel transesterification processes, the steady state model gain is derived for the quantitative analysis of relative gain array.
Shi HY(史洪岩) +3 more
core
Safety Science and Technology, EarlyView.Dynamic covalent network epoxy thermosets are emerging as a powerful class of sustainable materials that bridge the performance gap between conventional thermosets and thermoplastics. This review highlights recent advances in bio‐based epoxy systems derived from lignins, plant oils, furan derivatives, and natural phenolics, with emphasis on dynamic ...
Muhammad Salman +2 more
wiley +1 more source