通过环氧化苯乙烯-丁二烯-苯乙烯嵌段共聚物与亚硫酸氢钠的开环反应制备磺化离聚体

喻武钢　 谢洪泉　

Preparation of sulfonated ionomer via ring-opening reaction of epoxidized styrene-butadiene-styrene triblock copolymer with NaHSO3

Yu Wugang （Hubei Research Institute of Chemistry, Wuhan 430074, China）　 Xie Hongquan（Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074, China）　

　　Styrene-butadiene-styrene triblock copolymer(SBS) is a nonpolar thermoplastic elastomer and can be modified into an ionomer containing polar groups, in order to widen its uses. Xie et al reported the preparation of maleated ionomer and quaternary ammonium ionomer via ring-opening reaction of epoxidized SBS (ESBS) by potassium hydrogen maleate and triethylamine hydrochloride, respectively[1,2]. They also obtained the sulfonated SBS ionomer by using sulfuric acid and acetic anhydride in the presence of acetone[3].This communication deals with the preparation and characterization of sulfonated SBS ionomer prepared by ring-opening reaction of ESBS with aqueous NaHSO3 solution. ……