苯并15-冠-5修饰的咪唑卡宾催化2,2-二甲基三亚甲基环碳酸酯开环均聚的研究  

Exploration on Ring-opening Polymerization of 2,2-dimethyltrimethylene Carbonate by Benzo-15-crown-5 Imidazol Carbene

作　　者：杨青云[1] 崔宏宇[1] 王艳[1] 

机构地区：[1]山西师范大学化学与材料科学学院,山西临汾041004

出　　处：《福建师范大学学报（自然科学版）》2017年第3期48-53,68,共7页Journal of Fujian Normal University：Natural Science Edition

基　　金：山西省基础研究计划项目(2015011029);山西省研究生教育创新项目(2015BY38);山西师范大学自然科学基金项目(ZR1409)

摘　　要：研究了苯并15-冠-5修饰的咪唑卡宾催化2,2-二甲基三亚甲基环碳酸酯开环聚合,系统地探索了该聚合反应的特征,得到了反应的最佳条件,所得聚合物的摩尔质量较高,摩尔质量分布较窄,DSC两次扫描分析该聚合物存在两种晶型,利用~1H NMR和IR分析了聚合物的结构,推测聚合机理为"单体-活化"机理.Ring-opening polymerization of 2, 2-dimethyhrimethylene carbonate catalyzed by benzo-15-crown-5 imidazol carbene was mainly studied. The reaction features had been investigated systematically and the optimum conditions was obtained. The polymer gives higher molecular weights and narrow polydispersities. The DSC measurement of the polymer displays two different crystalline modifications. The structure of the polymers was characterized by · H NMR and IR, and the polymeri- zation mechanism is inferred via a monomer-activated process.

关 键 词：苯并15-冠-5修饰的咪唑卡宾 2 2-二甲基三亚甲基环碳酸酯 开环聚合 

分 类 号：O632.1[理学—高分子化学]