聚醚酰亚胺的磺化与热性能  

Sulfonation and Thermal Behavior of Sulfonated Polyether Imide

作　　者：文胜[1] 龚春丽[1] 郑根稳[1] 周毅[1] 管蓉[2] 

机构地区：[1]孝感学院化学与材料科学学院,湖北孝感432000 [2]湖北大学化学与化工学院,湖北武汉430062

出　　处：《高分子材料科学与工程》2009年第4期84-87,共4页Polymer Materials Science & Engineering

摘　　要：以氯磺酸为磺化荆成功制备了一系列不同磺化度的磺化聚醚酰亚胺（SPEI），并对SPEI的结构和热性能进行了研究。采用热重-红外联用技术对SPEI的热失重及失重产物分析表明SPEI有三个阶段的失重，分别归属于吸收的水分、磺酸基团及主链的降解，磺化之后热稳定性有所下降，磺酸基团在230℃370℃区间发生降解，但主链的降解温度基本保持不变；SPEI的玻璃化转变温度（Tg）明显升高，当磺化度为62．6％时，体系出现了两个独立的Tg。A series of sulfonated polyether imide with different sulfonation degree were prepared through ehlorosulfonic acid as sulfonated agent. The structure and thermal behavior of sulfonated samples were studied. From the thermogravimetric analysis, sulfonated samples have a three-step thermal degradation behavior, due to water removal, elimination of sulfonic acid groups, its thermal stability is decline slightly. DSG result reveals higher glass themperatures （Tg） with respect to the PEI, and two Tg＇s are detected when sulfonation degree equals to 62.6%.

关 键 词：聚醚酰亚胺 磺化 热性能 质子交换膜 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]