苯并12-冠-4桥联的氮杂环卡宾催化ε-己内酯开环聚合研究
The study on ring-opening polymerization of ε-caprolactone by benzo-12-crown-4 bridged N-heterocyclic carbene
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摘要: 研究了苯并12-冠-4桥联的氮杂环卡宾催化ε-己内酯的开环聚合,重点在不同反应条件下探索了聚合反应.利用1H NMR和IR分析了聚合物的端基,推测聚合机理是“单体活化”的机理.Abstract: Ring-opening polymerization of ε-caprolactone catalyzed by benzo-12-crown-4 bridged N-heterocyclic carbene was systematically studied.This work foused on the effects of different reaction conditions on the results.The structure of PCL was characterized by 1H NMR and IR.And the polymerization mechanism was possiblely a monomer-activated process.