聚合
聚氨酯
双功能
高分子化学
化学
开环聚合
聚合物
阴离子加成聚合
戒指(化学)
有机化学
催化作用
作者
David Zhang,Yang Zhang,Yujiao Fan,Marie‐Noëlle Rager,Vincent Guérineau,Laurent Bouteiller,Min-Hui Li,Christophe M. Thomas
出处
期刊:Macromolecules
[American Chemical Society]
日期:2019-03-21
卷期号:52 (7): 2719-2724
被引量:25
标识
DOI:10.1021/acs.macromol.9b00436
摘要
A new polymerization system is reported that provides aliphatic polyurethanes with novel structures from the anionic ring-opening polymerization of five-membered carbamates. By use of a bifunctional initiating system, the anionic ring-opening polymerization of cyclic carbamates gives unimodal polymers with Đ values generally narrow. A series of PUs with controlled molecular weights were synthesized by changing the reaction conditions. Detailed analysis of the reaction demonstrates that repeated acylations of in situ formed urethane anions lead to the formation of the polyurethane.
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