聚乙烯醇接枝聚三甲基烯丙基氯化铵的合成及表征  

The Synthesis and Characterization of Polyvinylalcohol-g-Poly(Trimethylallylammonium)

作　　者：孟平蕊[1] 于立娟[1] 李良波[1] 刘圣环[1] 王晓慧[1] 张艳梅[1] 

机构地区：[1]济南大学化学与化工学院,山东济南250022

出　　处：《高分子材料科学与工程》2010年第10期16-18,22,共4页Polymer Materials Science & Engineering

基　　金：国家"973"项目基金资助(2003CB615701)

摘　　要：Ce4+-聚乙烯醇(PVA)氧化还原体系作引发剂,PVA与三甲基烯丙基氯化铵(TMA)接枝聚合,制备PVA接枝聚三甲基烯丙基氯化铵(PVA-g-PTMA)。研究了引发剂、TMA用量、反应温度和时间对接枝聚合的影响。该接枝聚合反应的接枝参数比较高,表明Ce4+-PVA对PVA与TMA接枝聚合是一个有效的引发体系。用红外光谱分析了PVA-g-PT-MA的结构,扫描电镜显示PVA-g-PTMA的微观结构较PVA明显改变。PVA-g-PTMA是一种新型高密度电荷聚阳离子电解质,将PVA-g-PTMA与PVA接枝聚丙烯酸钠(PVA-g-SPAA)自组装聚离子复合物膜,其初步用于95%乙醇(体积分数)脱水时,95℃分离因子α=1000～2500、渗透通量J=600g/m2.h～1500g/m2.h。Polyvinyl alcohol graft polytrimethylallylammonium （PVA-g-PTMA） was prepared. The graft polymerization of PVA and trimethylallylammonium（TMA） was carried out using a redox system-ammonium ceric nitrate-PVA system as an initiator. The various reaction conditions were investigated at different initiator concentration and the ratio of monomer to PVA,the temperature and time of copolymerization. It is found that the graft parameters are higher,indicating that Ce4＋-PVA is an efficient redox initiating system for PVA/TMA graft polymerization. The structure of PVA-g-PTMA was characterized by IR and SEM. The results indicate that the graft polymer has been largely modified in the microstructure comparing with PVA. PVA-g-PTMA is an novel polycation electrolyte with high density charge. PVA-g-PTMA and PVA graft sodium polyacrylate （PVA-g-SPAA） self-assembled into the polyion composite membrane. The permeation flux of 600 g/m2·h～1500 g/m2·h and separation factor of 1000～2500 were obtained for dehydration of 95% ethanol at 95 ℃.

关 键 词：聚乙烯醇接枝聚三甲基烯丙基氯化铵 聚阳离子电解质 渗透汽化膜 

分 类 号：TQ316.343[化学工程—高聚物工业]