用于质子交换膜的磺化氢化聚苯乙烯-丁二烯嵌段共聚物的制备、结构与性能  

Preparation,Structure and Properties of Sulfonated Polystyrene-b-poly(ethylene-co-butylene)-b-styrene Triblock Copolymer for Proton Exchange Membrane

作　　者：何彦莹 谭潇 HE Yan-ying, TAN Xiao(1. China Bluestar Chengrand Co. , Ltd. , Chengdu 610041, China） （2. College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China)

机构地区：[1]中蓝晨光化工研究设计院有限公司,四川成都610041 [2]四川大学高分子研究所,四川成都610065

出　　处：《塑料工业》2018年第3期87-91,共5页China Plastics Industry

摘　　要：研究了以具有微相结构的嵌段共聚物氢化聚苯乙烯-丁二烯嵌段共聚物(SEBS)为基体制备质子交换膜,制备新型的无氟磺化嵌段聚合物质子交换膜——磺化氢化聚苯乙烯-丁二烯三嵌段共聚物(SSEBS)膜。对制备工艺进行研究和优化,采用热重分析(TGA)、傅里叶转换红外光谱(FTIR)和原子力显微镜(AFM)等手段对产物结构进行了表征,对微相结构和性能之间的关系进行分析讨论。SEBS经磺化后其微相分离形态仍存在,随着磺化度的提高,SSEBS膜的含水率提高,质子通道易于形成使得质子传导率提高,但同时膜的溶胀程度增加导致起物理交联作用的微相结构变得松散,使得力学性能下降。This paper has provided a unique insight into preparation of proton exchange membrane withmicrophase-separated structure. A novel sulfonated block copolymer membrane, sulfonated polystyrene-b-Poly（ethylene-co-butylene） -b-styrene triblock copolymer （SSEBS） membrane, was prepared by solutioncasting. The synthesis process was optimized and the microstructure of the products was determined bythermogravimetric analysis （TGA）, Fourier transform infrared spectroscopy （FFIR） and atomic forcemicroscope （AFM）. The relationship between the microstructure and the properties was investigated indetail. After sulfonation, the microphase structure is remained in the sulfonated SEBS. The protonconductivity and water uptake increase with increasing sulfonation degree, while the mechanical propertiessuffer a decrease due to over-swelling.

关 键 词：质子交换膜 磺化 微相结构 

分 类 号：TQ322[化学工程—合成树脂塑料工业]