功能高分子材料教育部重点实验室

近期发表论文

郭天瑛课题组 张望清课题组 | MACROMOLECULES

发布人:功能高分子材料教育部重点实验室    发布时间:2018/07/05   浏览次数: 429 次

Influence of Solvophilic Homopolymers on RAFT Polymerization-Induced Self-Assembly

Zhang, Y (Zhang, Yuan)1 ] Han, G (Han, Guang)3 ] Cao, MJ (Cao, Mengjiao)1 ] Guo, TY (Guo, Tianying)1 ] Zhang, WQ (Zhang, Wangqing)1,2 ]

MACROMOLECULES, 2018, 51(11): 4397-4406

DOI: 10.1021/acs.macromol.8b00690

 WOS:000435417800048

Abstract

A new method to modulate RAFT dispersion polymerization by introducing solvophilic homopolymers into the polymerization medium is proposed. It is discovered that in RAFT dispersion polymerization employing poly(4-vinylpyridine) trithiocarbonate macro-RAFT agent, the introduced solvophilic homopolymers of poly(N,N-dimethylacrylamide) (PDMA), poly(ethylene glycol), and poly(4-vinylpyridine) can greatly change both the size/morphology of poly(4-vinylpyridine)-block-polystyrene nanoassemblies and polymerization kinetics. RAFT dispersion polymerization decelerates with the increasing amount of introduced PDMA, and it favors formation of complex block copolymer nanoassemblies in the presence of PDMA. The possible reason for introduced solvophilic homopolymers affecting polymerization kinetics and the block copolymer nanoassemblies is discussed. Adding solvophilic homopolymers into the polymerization medium is believed to be a promising alternative to modulate RAFT dispersion polymerization.