Premium
High‐Efficiency Preparation of Macrocyclic Polymers via a Circulatory Extraction–Cyclization Strategy
Author(s) -
Zhu Xing,
Zhou Nianchen,
Zhu Jian,
Zhang Zhengbiao,
Zhang Wei,
Cheng Zhenping,
Tu Yingfeng,
Zhu Xiulin
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201300060
Subject(s) - polymer , polystyrene , cycloaddition , materials science , polymer chemistry , methyl methacrylate , extraction (chemistry) , chemical engineering , chemistry , polymerization , organic chemistry , catalysis , composite material , engineering
Typically, intramolecular cyclization reactions need to be conducted at high dilution to avoid interchain coupling, which leads to the production of cyclic polymer at an extremely low output. Herein, a high‐efficiency Cu‐catalyzed azide/alkyne cycloaddition “click” synthesis of cyclic polystyrene (PS) and cyclic poly (methyl methacrylate) (PMMA) is reported via a circulatory technique of evaporation–condensation–extraction–inflow strategy by the utilization of elaborately designed equipment. High‐output cyclic PS (one batch, 0.71 g cyclic polymer from 1.0 g linear polymer loading) and cyclic PMMA (one batch, 0.62 g cyclic PMMA from 1.0 g linear polymer loading) are achieved. This promising preparation should be beneficial to the large‐scale application and research of cyclic polymers.