文献类型：期刊文献

英文题名：The contrastive study of chemical treatment on the properties of PVDF/PFSA and PVDF/PVP ultrafiltration membranes

作者：Lang, Wan-Zhong[1,2];Xuan, Zhang[1,2];Shen, Jian-Ping[1,2];Xu, Hai-Peng[1,2];Xu, Zhen-Liang[3];Guo, Ya-Jun[1,2]

机构：[1]Shanghai Normal Univ, Dept Chem & Chem Engn, Educ Minist Key Lab Resource Chem, Shanghai 200234, Peoples R China;[2]Shanghai Normal Univ, Dept Chem & Chem Engn, Shanghai Key Lab Rare Earth Funct Mat, Shanghai 200234, Peoples R China;[3]E China Univ Sci & Technol, Membrane Sci & Engn R&D Ctr, Chem Engn Res Ctr, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：341

期号：1

起止页码：72

外文期刊名：DESALINATION

收录：;EI(收录号：20141217499585);WOS:【SCI-EXPANDED(收录号:WOS:000335272300008)】；

基金：The research is supported by the National Natural Science Foundation of China (Grant No.20906062), Shanghai Municipal Natural Science Foundation (Grant No. 13ZR1429900) and Innovation Program of Shanghai Municipal Education Commission (Grant No.12ZZ130).

语种：英文

外文关键词：Poly(vinylidene fluoride) (PVDF); Chemical stability; Perfluorosulfonic acid(PFSA); Polyvinylpyrrolidone(PVP); Ultrafiltration

摘要：The impact of chemical treatment on the poly(vinylidene fluoride)/perfluorosulfonic acid (PVDF/PFSA) hollow fiber ultrafiltration membranes in acid, alkali and hypochlorite solutions was contrastively studied with PVDF/polyvinylpyrrolidone(PVP) ultrafiltration membranes. The morphologies, surface properties, permeation performances, antifouling ability and mechanical properties of the membranes were characterized by numerous state-of-the-art analytical techniques. The results reveal that the chemical treatment has less effect on the PVDF/PFSA membranes than on the PVDF/PVP membranes. After treating with alkali and hypochlorite solutions, the surface hydrophilicity of PVDF/PFSA membranes increases, while the surface hydrophilicity of PVDF/PVP membranes decreases. In comparison with the original membranes, the antifouling ability of the PVDF/PFSA membranes is improved, while the antifouling ability of the PVDF/PVP membranes declines. Compared with the chemically treated PVDF/PVP membranes, the treated PVDF/PFSA membranes are more easily regenerated after fouling. The chemical treatments lead to the decline of the mechanical strength in different degrees for both PVDF/PFSA and PVDF/PVP membranes. Nevertheless, this influence on PVDF/PFSA membranes is evidently less severe than on PVDF/PVP membranes. (C) 2014 Elsevier B.V. All rights reserved.