摘要
制备了不同磺化度的磺化聚(苯乙烯/乙烯丁二烯/苯乙烯)三嵌段共聚物膜(sSEBS),对其膜的性能和结构进行了研究。结果表明,FTIR分析判断磺酸基团接入PS段的苯环对位上;电导率、含水量、溶涨率和水合系数都以磺化度为15%左右为临界点,在此有增长的突变,随后前三者随磺化度的增高而继续增大的趋势减缓,而水合系数在磺化度为20%左右达到最高,再逐渐减小;AFM研究表明磺化后PS相以大小为20～30nm的柱状存在。
A hydrocarbon proton exchange membrane, the sulfonated styrene/butylene-ethylene/styrene (s-SEBS) three blocks copolymer membrane was prepared. The performance and microstructure of membranes were investigated. The sulfonic groups determined by a FT-IR were on the parapositions of phenyls of PS blocks. The conductivity, water uptake, swelling and hydration coefficient all increase drastically when sulfonation degree came to 15 percent, which exhibited the percolation threshold. Then the first three kept slow increasing with the sulfonation degree growing, but the hydration coefficient came to the peak when the sulfonation degree was about 20. AFM showed that suffocated PS phases were the cylinder structure with 20-30 nm.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2005年第7期7-9,53,共4页
Journal of Wuhan University of Technology
基金
材料复合新技术国家重点实验室基金(303474081).
关键词
磺化SEBS
质子交换膜
性能
结构
sulfonated SEBS
proton exchange membranes
performance
microstructure
