吡咯类碱性离子液体的制备及其在阴离子导电膜中的应用  

Preparation of pyrrole-series basic ionic liquid and its application in anion conductive membrane

作　　者：韩旭 王吉林[1] 王璐璐[1] 吕振波[1] HAN Xu;WANG Ji-lin;WANG Lu-lu;LV Zhen-bo(College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China)

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001

出　　处：《现代化工》2018年第6期122-127,共6页Modern Chemical Industry

基　　金：辽宁省科技厅博士启动项目(20141126);辽宁省教育厅科学研究一般项目(L2013153);抚顺市科学技术发展资金计划项目(20141115);辽宁石油化工大学博士启动基金(2013XJJ-006);辽宁石油化工大学国家级科研项目培育项目

摘　　要：以N-乙烯基吡咯烷酮(NVP)和碘甲烷(CH_3I)为原料合成N-乙烯基-N-甲基碘化吡咯烷酮(CVPnI)离子液体。借助引发剂过硫酸钾(KPS)将带有不饱和双键的苯乙烯(St)单体和CVPnI离子液体在季铵化聚乙烯醇(QPVA)水溶液中原位引发聚合,然后以戊二醛(GA)为交联剂将QPVA中的羟基交联形成网状结构,将上述线性嵌段聚合物"锁定"在QPVA的网络结构中,制备了一系列具有半互穿网络结构(Semi-IPN)的阴离子导电膜。同时,考察了离子液体在膜中所占质量比对该导电膜的含水率、溶胀率、机械性能以及电导率的影响。结果表明,当离子液体的质量占膜总质量的20%、导电膜的含水率和拉伸强度分别为197%和22.7 MPa、70℃时,该膜电导率为1.08×10^(-2)S/cm;热稳定性测试结果表明,该膜具有良好的热稳定性,最低分解温度高于200℃。N-Methyl-N-vinyl-2-pyrrolidonium iodide（ CVPnI） ionic liquid is synthesized from N-vinyl pyrrolidone（ NVP） and iodomethane.Using potassium persulfate（ KPS） as initiator,the in-situ polymerization is initiated between styrene（ St） and [CVPnI]OH ionic liquid in the solution of quaternized polyvinyl alcohol（ QPVA）. Then a series of anion conducting membranes with semi-interpenetrating network structure（ Semi-IPN） are prepared by using glutaraldehyde（ GA） as crosslinking agent to crosslink the hydroxyls in QPVA into a network structure that locks the prepared linear block polymer.The effects of the mass content of CVPnI in the prepared membrane on the water content,swelling ratio,mechanical properties and electrical conductivity of the membrane are studied.The experiment results show that the electrical conductivity of the membrane at 70℃ can reach 1. 08×10^（-2） S·cm^（-1） when the mass fraction of CVPnI is 20%,the water content in membrane is 197% and the tensile strength is 22. 7 MPa. TGA shows that the prepared membrane has good thermal stability with the lowest decomposition temperature higher than 200℃.

关 键 词：季铵化聚乙烯醇 离子液体 苯乙烯 阴离子导电膜 半互穿网络 

分 类 号：TQ425.236[化学工程]