نتایج جستجو برای: quaternized polyethersulfone

تعداد نتایج: 794  

Journal: :Chemical communications 2014
Na Zhang Baolong Wang Yurong Zhang Fanzhe Bu Ying Cui Xuefeng Li Chengji Zhao Hui Na

Functionalized graphene oxide (FGO) reinforced quaternized poly(ether ether ketone) membranes were prepared for high temperature proton exchange membrane applications. The introduction of FGO significantly improved the mechanical strength and oxidative stability of these membranes at a high doping level. These reinforced membranes showed high tensile strength up to 40 MPa and high proton conduc...

2018
Shukun Wang Danyang Meng Sisi Wang Zhong Zhang Ruijin Yang Wei Zhao

In this study, enzymatic hydrolysis and cationization with epoxypropyldodecyldimethylammonium chloride of wheat protein, an economic protein complex containing great amount of disulfide bonds, were conducted to improve properties such as solubility and disassociation behaviour for recovery of damaged hair when used in shampoo. The optimal conditions for enzymatic hydrolysis were pH 8.2, 55°C wi...

2011
Di CUI Saïd SADKI Benoit FRISCH Claudine FILIATRE Min-Hui LI Catherine PICART Annabelle VARROT Rachel AUZELY-VELTY

Polyelectrolyte multilayer microcapsules are made by layer-by-layer (LbL) assembly of oppositely charged polyelectrolytes onto sacrificial colloidal particles, followed by core removal. In this paper, we prepared contact killing polyelectrolyte microcapsules based solely on polysaccharides. To this end, water-soluble quaternized chitosan (QCHI) with varying degree of substitution (DS) and hyalu...

Journal: :Journal of virological methods 2004
Jean-Philippe Michel Mari Gingery Laurence Lavelle

Ultrafiltration using polyethersulfone-membranes was evaluated as an efficient and preferred method for purifying Cowpea Chlorotic Mottle Virus (CCMV). Cesium chloride (CsCl) ultracentrifugation and ultrafiltration protocols are described, and comparative UV-spectroscopic and electron micrograph results are presented. CCMV purified by ultrafiltration are shown to be equivalent to CCMV purified ...

Journal: :Environmental Technology and Innovation 2022

Sulfonated polyethersulfone/sulfopropyl methacrylate membranes impregnated with the polysulfopropyl acrylate coated ZnO nanoparticles were developed using a non-solvent-induced phase separation recipe. The composite offered much-enhanced hydrophilicity and improved porosity, which are critical for excellent antifouling performance high permeate flux. By adding modified ZnO, it achieved maximum ...

Journal: :Journal of Physical Chemistry C 2021

In the pursuit of good performing, low cost, and scalable anion-exchange membranes (AEM), a series blended electrolytes based on cross-linked quaternized poly epichlorohydrin (qPECH) polyvin...

2010
Ping Qu Huanwei Tang Yuan Gao Li-ping Zhang Siqun Wang

Polyethersulfone (PES) is a common material used for ultrafiltration (UF) membranes, which has good chemical resistance, high mechanical properties, and wide temperature tolerances. The hydrophobic property of the PES membrane seriously limits its application. Cellulose fibrils are composed of micro-sized and nano-sized elements, which have high hydrophilicity, strength, and biodegradation. A c...

Journal: :Journal of Chemical Engineering & Process Technology 2017

Journal: :Chemical communications 2014
G L De Gregorio R Giannuzzi M P Cipolla R Agosta R Grisorio A Capodilupo G P Suranna G Gigli M Manca

We here report the implementation of poly[(3-N-methylimidazoliumpropyl)methylsiloxane-co-dimethylsiloxane]iodides as suitable polymeric hosts for a novel class of in situ cross-linkable iodine/iodide-based gel-electrolytes for dye-sensitized solar cells. The polymers are first partially quaternized and then subjected to a thermal cross-linking which allows the formation of a 3D polymeric networ...

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