不同荷电性聚氯乙烯超滤膜制备及性能  

Preparation and performance of different charged polyvinyl chloride ultrafiltration membranes

作　　者：谢艳新 唐玉岭 杨倩 周名勇 朱宝库 XIE Yan-xin;TANG Yu-ling;YANG Qian;ZHOU Ming-yong;ZHU Bao-ku(School of Chemistry&Materials Engineering,Xinxiang University,Xinxiang 453003,China;Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]新乡学院化学与材料工程学院,河南新乡453003 [2]浙江大学高分子科学与工程学系,浙江杭州310027

出　　处：《高校化学工程学报》2020年第6期1527-1535,共9页Journal of Chemical Engineering of Chinese Universities

基　　金：国家重点研发计划(2017YFE0114100);新乡学院科技创新团队资助项目(XXUTD20170111)。

摘　　要：为提高聚氯乙烯(PVC)的亲水性和抗污染性能,分别将聚乙二醇(PEG 20000)、聚(氯乙烯-co-甲基丙烯酸二甲氨基乙酯)(PVD)和磺化聚砜(SPSf)引入PVC基质中,非溶剂致相转化法(NIPS)制备出电中性PVC/PEG(M1)、荷正电PVC/PVD(M2)和荷负电PVC/SPSf(M3)3种共混超滤膜。并研究3种膜的表面化学组成、结构形貌、孔径和孔隙率、水接触角、荷电性、渗透性、牛血清蛋白(BSA)截留及抗污染性能。结果表明:M1、M2和M3均是具有海绵结构的超滤膜,孔隙率、水接触角和纯水通量均表现为M1>M3>M2。对BSA的截留率为M3(99.3%)>M2(90.6%)>M1(86.2%),通量恢复率为M3(98.2%)>M1(90.1%)>M2(73.0%),荷负电的M3具有更优异的持久抗污染能力。In order to improve hydrophilicity and antifouling properties of polyvinyl chloride(PVC),polyethylene glycol(PEG 20000),poly(vinyl chloride-co-dimethylaminoethyl methacrylate)(PVD)and sulfonated polysulfone(SPSf)was mixed into PVC matrix,respectively.Uncharged PVC/PEG(M1),positively charged PVC/PVD(M2)and negatively charged PVC/SPSf(M3)UF membranes were fabricated by non-solvent induced phase separation(NIPS)processes.The prepared membranes were investigated in terms of surface chemical composition,structure morphology,pore size,porosity,water contact angle,surface potential,permeability,bovine serum albumin(BSA)rejection and antifouling properties.The results show that M1,M2,and M3 are ultrafiltration membranes with sponge structure.The values of porosity,water contact angle and pure water flux are in order of M1>M3>M2,and the BSA rejection performance is M3(99.3%)>M2(90.6%)>M1(86.2%).The flux recovery rate is M3(98.2%)>M1(90.1%)>M2(73.0%).The negatively charged M3 shows better long-term antifouling performance.

关 键 词：荷电膜 聚氯乙烯 聚(氯乙烯-co-甲基丙烯酸二甲氨基乙酯) 磺化聚砜 超滤 

分 类 号：TQ028.3[化学工程]