Premium
Organocatalytic Ring‐Opening Alternating Copolymerization of Epoxides and Cyclic Anhydrides by a Simple Organobase/Urea Binary Catalyst
Author(s) -
Zhu Xingji,
Wang Rui,
Kou Xinhui,
Liu Fusheng,
Shen Yong
Publication year - 2021
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.202100104
Subject(s) - phosphazene , catalysis , phthalic anhydride , copolymer , polymer chemistry , polyester , ether , materials science , ring (chemistry) , organic chemistry , chemistry , polymer
Although several organocatalysts have been reported for the efficient ring‐opening alternating copolymerization (ROAC) of epoxides and cyclic anhydrides, the low catalytic activity still remains as a problem. Thus, there is still a motivation to develop new simple and high active organocatalysts. In this contribution, an organic cyclic trimeric phosphazene base (CTPB) is used as catalyst in combination with different ureas for the ROAC of phthalic anhydride with a variety of epoxides. The CTPB/urea binary catalysts exhibit high catalytic activities, producing perfectly alternating polyesters without formation of ether linkages. Polyesters with diverse structures, well‐defined chain‐ends, as well as low dispersities are successfully obtained.