聚乙烯/聚乙烯醇-凹土渗透气化复合膜的制备与表征  

Preparation and Characterization of Polyethylene/Polyvinylalcohol-Attapulgite Pervaporation Composite Membranes

作　　者：裴宇航[1] 李梅生[1] 赵宜江[1] 周守勇[1] 张盈[1] 时正秋 

机构地区：[1]淮阴师范学院化学化工学院江苏省低维材料化学重点建设实验室江苏省区域现代农业与环境保护协同创新中心,江苏淮安223300

出　　处：《高分子材料科学与工程》2016年第4期163-167,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21406082;21476094);江苏省高等学校大学生创新创业训练计划(201410323006Z);江苏省科技支撑计划(工业)(BE2013080)

摘　　要：以聚乙烯中空纤维微滤膜为底膜,聚乙烯醇(PVA)和凹凸棒黏土(ATP)为制膜液,采用溶液涂敷法制备了不同ATP含量的聚乙烯/聚乙烯醇-凹凸棒粘土渗透气化复合膜。对复合膜的物理化学结构进行了表征,并测试了复合膜的力学性能、耐水和透水性能。结果表明,PVA与ATP两者通过氢键作用,提高了复合膜的力学性能和耐水性能,当ATP悬浮液含量为5%时,复合膜的性能较好;同时,ATP的掺入会使复合膜的透水率降低,但远小于交联剂丁二酸的影响。Polyethylene hollow fiber microfiltration membranes were selected as supported layer,polyvinylalcohol and attapulgite were selected as raw materials to prepare pervaporation composite membranes via solution coating method.The physical and chemical structures of the composite membranes were characterized. The mechanical,water resistance and permeability properties of the composite membranes were tested. The results reveal that PVA and ATP are chemically bonded in the form of hydrogen bonds. Then,the water resistance and mechanical properties of composite membranes are improved greatly. When the mass fraction of ATP suspension is 5%,the composite membranes exhibit better properties in this work. Meanwhile,the introduction of ATP would increase the water permeability of the composite membrane,but much lower than the effect of cross-linking agent（ succinic acid）.

关 键 词：聚乙烯醇 凹凸棒粘土 复合膜 

分 类 号：TQ325.9[化学工程—合成树脂塑料工业]