Comb-shaped 2-Methylimidazolium Poly(arylene ether sulfone) Anion Exchange Membranes with High Alkaline Stability  

作　　者：ZHANG Yurong GE Xiaoguang ZHAO Chengji NA Hui 

机构地区：[1]Alan G.MacDiarmid Institute,College of Chemistry,Jilin University,Changchun 130012,P.R.China

出　　处：《Chemical Research in Chinese Universities》2019年第1期150-156,共7页高等学校化学研究（英文版）

基　　金：the National Natural Science Foundation of China(No.21474036).

摘　　要：A series of comb-shaped poly(arylene ether sulfone)s containing pendant 2-methyl-3-alkylimidazolitun group(ImPAES-Cx,x=1,6,10)was prepared and characterized as novel anion exchange membranes.These Im-PAES-Cx membranes were obtained by benzylic bromination and imidazolium functionalization.The characteristic nano-phase separation structure was formed in membranes with longer alkyl side chains,as confmned by small-angle X-ray scattering.The nano-phase separation structures endowed ImPAES-Cx membranes with improved ionic conductivity,dimensional stability(at least 60% decrease water uptake and swelling ratio at 60℃)and mechanical properties,together with excellent alkaline stability.Especially,ImPAES-C6 membranes possessed enhanced hydroxide conductivity and chemical stability simultaneously.These results suggest that it is a feasible strategy to introduce appropriate length of alkyl side chains into anion exchange membranes(AEMs)to improve the performance.

关 键 词：Comb-shaped structure:hnidazolittm functionalized poly(arylene ETHER sulfone) Alkaline STABILITY Membrane 

分 类 号：O6[理学—化学]