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Development of recoverable and recyclable Fe 3 O 4 ‐supported organocatalysts for ring‐opening polymerization
Author(s) -
Chen Yang,
Xiao Wenhao,
Zhang Jie,
Bu Minglu,
Zhang Xiaoqing,
Chen Anfu,
Xu Jinbao,
Lei Caihong
Publication year - 2020
Publication title -
journal of polymer science
Language(s) - English
Resource type - Journals
eISSN - 2642-4169
pISSN - 2642-4150
DOI - 10.1002/pol.20200615
Subject(s) - phosphazene , superbase , polymerization , chemistry , catalysis , polymer chemistry , nanoparticle , ring (chemistry) , organic chemistry , materials science , nanotechnology , polymer
Abstract An iminotris(dimethylamino)phosphorane (HMP 1 ) phosphazene superbase has been anchored onto poly(hexachlorocyclotriphosphazene‐ co ‐4,4′‐sulfonyldiphenol) (PZS)‐coated Fe 3 O 4 magnetic nanoparticles (MNPs) through efficient phosphorous‐chloride (from PZS surface) and imino (from HMP 1 ) reaction. Subsequently, these novel heterogeneous Fe 3 O 4 @PZS@HMP 1 catalysts have been successfully utilized in the ring‐opening polymerization of ε ‐caprolactone ( ε ‐CL) and δ ‐valerolactone ( δ ‐VL). Notably, such catalysts can be easily removed from the reaction mixture and reused 3 times without obvious activity loss.