活性阳离子聚合
阳离子聚合
乙烯基醚
聚合
氯乙烯
高分子化学
化学
聚合物
乙醚
单体
有机化学
作者
Jiajia Li,Miao Chen,Xia Lin,Xiangqiang Pan,Zhengbiao Zhang,Jian Zhu
标识
DOI:10.1016/j.cej.2022.134828
摘要
• First microflow cationic polymerization under ambient conditions. • No further purification of all reagents were required. • Well-defined poly(vinyl ether)s can be achieved within 2 min. Living cationic polymerization is a well-established method for preparing polymers with controlled molecular weights and complex architectures, but rigorous polymerization conditions limit its widespread application. Here, we report a facile strategy for simplifying the strict conditions required for traditional living cationic polymerizations of various vinyl ethers including ethyl vinyl ether (EVE), propyl vinyl ether (PVE), butyl vinyl ether (BVE) and isobutyl vinyl ether (IBVE) by utilizing continuous microflow reactors and a weak Lewis acid, zinc chloride (ZnCl 2 ). Well-defined polymers with controlled molecular weights and narrow molecular weight distributions (<1.20) can be obtained under ambient conditions without monomer purification, temperature control or strictly anhydrous conditions. The living nature of the polymerization was verified by kinetic experiments and successful in situ chain extension.
科研通智能强力驱动
Strongly Powered by AbleSci AI