Results 61 to 70 of about 26,556 (257)
Development and characterization of sulfonated polysulfone membrane for proton exchange membrane fuel cell (PEMFC) [PDF]
, 2004 Sulfonated polysulfone membranes with varying degree of sulfonation have been successfully synthesized by electrophilic substitution via sulfonation process in this study.
Naim, Rosmawati
core
Strongly Charged Polymer Brushes
, 2005 Charged polymer brushes are layers of surface-tethered chains. Experimental systems are frequently strongly charged. Here we calculate phase diagrams for such brushes in terms of salt concentration n_s, grafting density and polymer backbone charge ...
O'Shaughnessy, Ben, Yang, Qingbo
core +1 more source
Preparation of Sulfonated Poly (Ethylene-co-tetrafluoroethylene-graft-styrene) Based Polymer Electrolyte Membranes for Fuel Cell by Using Gamma Irradiation Technique [PDF]
, 2012 Poly (ethylene-co-tetrafluoroethylene-graft-styrene-sulfonate) was successfully prepared by irradiation grafting of a styrene monomer into ethylenetetrafluoro-ethylene (ETFE) films and followed by sulfonation of the graft chains. Five film sheets of ETFE
Suliwarno, A. (A)
core +3 more sources
RSC Advances, 2020 Electrospun nanofibers of polybenzoxazines (PBzs) were fabricated using an electrospinning process and crosslinked by a sequential thermal treatment. Functionalization by the direct sulfonation process followed after the post-electrospinning modification
R. P. Parreño +3 more
semanticscholar +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract The synthesis and characterization of an amphiphilic nitroxide to be used as a controlling agent in a nitroxide‐mediated living radical polymerization in aqueous dispersion media is presented. In the first stage of nitroxide synthesis (phthalimide protection), two reaction methods were employed: traditional and microwave.
Enrique García‐Leal +3 more
wiley +1 more source
Optimisation of operating conditions in batch for more sustainable continuous process transposition [PDF]
, 2008 Implementation of exothermic and fast reactions requires a perfect temperature control to avoid thermal runaway and in most cases to limit by-products production.
Cabassud, Michel +4 more
core
Polyvinylidene Fluoride: A Growing Specialty Polymer with Many Facets
Chinese Journal of Chemistry, EarlyView.Comprehensive Summary Polyvinylidene fluoride (PVDF), the second largest produced fluoropolymer, exhibits outstanding chemical, physical, electroactive and electrochemical properties and is involved in many High‐Tech applications. This review reports recent novelties in synthesis, characterization, processes and applications. Recent preparation studies
Bruno Améduri
wiley +1 more source
Molecules, 2015 A series of 5H-thiazolo[3,2-a]pyrimidin-5-ones were synthesized by the cyclization reactions of S-alkylated derivatives in concentrated H2SO4. Upon treatment of S-alkylated derivatives at different temperatures, intramolecular cyclization to 7 ...
Dong Cai +6 more
doaj +1 more source
Frontiers in Pharmacology, 2022 Daidzein (D1) has been proved to be of great benefit to human health. More and more attention was paid to the metabolic process of D1. Most studies focused on the metabolites of D1 and analogs were determined through the excretion of animals and humans ...
Yanxiao Jiao +8 more
doaj +1 more source
Adenosine-5′-phosphosulfate - a multifaceted modulator of bifunctional 3′-phospho-adenosine-5′-phosphosulfate synthases and related enzymes [PDF]
, 2013 All sulfation reactions rely on active sulfate in the form of 3′-phosphoadenosine-5′-phosphosulfate (PAPS). In fungi, bacteria, and plants, the enzymes responsible for PAPS synthesis, ATP sulfurylase and adenosine-5′-phosphosulfate (APS) kinase, reside ...
Allali-Hassani +46 more
core +1 more source