Synthesis of poly(hydroxyurethane) from 5‐membered cyclic carbonate under mild conditions in the presence of bicyclic guanidine and their reaction process,Journal of Polymer Science

当前位置： X-MOL 学术 › J. Polym. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Synthesis of poly(hydroxyurethane) from 5‐membered cyclic carbonate under mild conditions in the presence of bicyclic guanidine and their reaction process
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2021-02-22 , DOI: 10.1002/pol.20200825
Wenyong Dong ₁ , Yoshiaki Yoshida _{1,

2} , Takeshi Endo ₁

Affiliation

A series of amines are applied as catalysts in the aminolysis reactions of five‐membered cyclic carbonate (5CC). Kinetic results display that TBD, which has a guanidine structure, exhibits the best catalytic efficacy and the reaction rate constant is about 100 times higher than the blank system without catalyst. The reaction medium, NMP is found to be as both solvent and promoter in the aminolysis of 5CC. Finally, with TBD and NMP as catalyst and solvent, respectively, the polymerization of bis‐functional 5CC (B5CC) and 1, 6‐diaminohexane can proceed almost 100% at room temperature in less than 4 h to obtain poly(hydroxyurethane)s (PHUs) with moderate molecular weight.

中文翻译：

在双环胍存在下，温和条件下由五元环状碳酸酯合成聚（羟基氨基甲酸酯）及其反应过程

在五元环状碳酸酯（5CC）的氨解反应中，一系列胺被用作催化剂。动力学结果表明，具有胍结构的TBD表现出最佳的催化效果，反应速率常数比没有催化剂的空白体系高约100倍。发现反应介质NMP在5CC的氨解反应中既是溶剂又是促进剂。最后，TBD和NMP作为催化剂和溶剂，分别的聚合双官能化5CC（B5CC）和1,6 -diaminohexane可以在室温下在小于4小时进行几乎是100％，得到的聚（羟基氨基甲酸酯）S（ PHUs）具有中等分子量。

更新日期：2021-03-15

点击分享查看原文

点击收藏

阅读更多本刊新发论文