亲水剂对磺化聚醚砜基阳离子交换膜结构与性能的影响
作者：赵津礼，王建友，陈青柏
单位： 天津市城市生态环境修复与污染防治重点实验室，南开大学环境科学与工程学院，天津 300350
关键词： 磺化聚醚砜；阳离子交换膜；脱盐；聚乙烯吡咯烷酮
DOI号：
分类号： TQ028.8
出版年,卷(期):页码： 2020,40(1):93-99

摘要：
 以低磺化度磺化聚醚砜（SPES）为基质材料，与亲水剂聚乙烯吡咯烷酮K60（PVPK60）共混，改变SPES与PVP的质量比（m(SPES)/m(PVP)），制备阳离子交换膜，考察膜结构与性能。研究发现，随m(SPES)/m(PVP)的减小，阳离子交换膜的力学性能先增加后降低；膜亲水性逐渐增加；膜表面规整，表面粗糙度先降低后增加；膜中PVP未发生明显泄露；SPES与PVP相容性良好；电渗析脱盐（ED）测试表明m(SPES)/m(PVP)为6/4和5/5阳离子交换膜优于商品对照膜的脱盐效果，m(SPES)/m(PVP)为6/4和5/5时，制备的膜整体性能较为理想。
 Different SPES/PVP cation exchange membranes (S/P CEM) were prepared by blending hydrophilic polyvinylpyrrolidone (PVPK60) with sulfonated polyethersulfone (SPES) with low sulfonation degree. The structure and properties of S/P CEM were investigated. The shortcoming of low density of functional groups in the membranes was offset by improving the hydrophilicity of the membranes. The results showed that with the decrease of mass ratio of SPES to PVP, the mechanical properties of S/P CEM increased firstly and then decreased. The hydrophilicity gradually increased. The surface regularity of the membranes decreased, and the surface roughness decreased firstly and then increased. There was no obvious leakage of PVP in the membranes. The compatibility between SPES and PVP was good. The electrodialysis desalination (ED) test showed that the desalination effect of the ED device fitted with S-6/P-4 and S-5/P-5 CEM was better than that of the commercial control membrane. The overall performance of the S-6/P-4 CEM was the best.

基金项目：
国家重点研发计划（2017YFC0404003，2016YFC0400707）；南开大学基本科研项目（20180017）；天津市生态环境治理科技重大专项（18ZXSZSF00050）；省部共建分离膜与膜过程国家重点实验室开放基金（M2-201703）

作者简介：
第一作者简介：赵津礼（1987－），男，博士后；从事膜分离、电驱动膜技术研究；联系电话：13682065282；电子邮件：zhaojinli-1016@163.com 联系作者：王建友，教授；电子邮件：wangjy72@nankai.edu.cn

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