摘要
利用甲酸和过氧化氢反应原位生成的过氧甲酸为氧化剂,以具有两亲性的聚乙二醇(PEG-400)为相转移催化剂,在甲苯溶剂中对苯乙烯-异戊二烯-苯乙烯三嵌段共聚物进行环氧化。结果表明,当PEG-400质量分数为1%时,产物环氧度由39.1%提高到59.5%,且环氧化反应主要发生在聚异戊二烯链段的1,4-结构双键上,1,4-结构的摩尔分数由50.70%下降到33.55%,特征峰位置没有明显变化。
The styrene-isoprene-styrene tfiblock copolymer （SIS） was epoxi- dized with performic acid generated in situ from the reaction of formic acid and hydrogen peroxide in toluene solvent to prepare the epoxidized styrene-isoprene-styrene triblock copolymer （ESIS） Eli. In this paper,polyethylene glycol （PEG-400）E2J was firstly used as a phase transfer catalyst in the epoxidation of SIS to solve the poor dispersion of performic acid in toluene because of its strong polarity which was unfavorable for the epoxidation.
作者
郎秀瑞
宋亚忠
谭璞
姜波
宗成中
LANG Xiu-rui1 , SONG Ya-zhong1, TAN Pu1, JIANG Bo2, ZONG Cheng-zhong1(1. School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China ; 2. Qingdao Ruilin Materials Technology Co. Ltd, Qingdao 266000, Chin)
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2018年第3期235-235,共1页
China Synthetic Rubber Industry
基金
Supported by International Science & Technology Cooperation Program of China(2013 DFR 50240)
