摘要
对以发烟硫酸为主体的双元催化剂进行四氢呋喃开环聚合制备聚氧四甲撑二醇进行了系统的研究。实验结果表明开环聚合宜采用３０％浓度的发烟硫酸，通过正交实验得到了聚合反应的最佳条件；辅助催化剂Ｂ的加入可灵活调整产品的数均分子量；未反应的四氢呋喃经适当处理后可以回收循环使用。
The synthesis of polyoxytetramethylene glycol by cationic ringopening polymerization of tetrahydrofuran was studied in use of a binary catalyst system of fuming sulfuric acid and cocatalyst B. The results indicated that the proper content of free SO3 in fuming sulfuric acid in ringopening polymerization were about 30%. The optimal conditions of polymerization were obtained through orthogonal experiments. The average molecular weight of polyoxytetramethylene glycol could be flexibly controlled by varying the amount of cocatalyst B. The unreacted tetrahydrofuran could be recycled after suitable treatments.
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第3期260-264,共5页
Journal of East China University of Science and Technology
关键词
聚氧四甲撑二醇
PTMG
合成
发烟硫酸法
tetrahydrofuran
polyoxytetramethylene glycol
fuming sulfuric acid
cationic ringopening polymerization
