Star polymers via cross-linking amphiphilic macroinitiators by AGET ATRP in aqueous media

被引：0
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作者：
Li, Wenwen [1 ]
Matyjaszewski, Krzysztof [1 ]
机构：
[1] Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, United States
来源：
Journal of the American Chemical Society | 2009年 / 131卷 / 30期
关键词：
(Graph Presented) Amphiphilic star polymers with low polydispersity (PDI) and high molecular weight were synthesized by an activator generated by electron transfer atom transfer radical polymerization (AGET ATRP) in aqueous dispersed media using a simple arm-first method and linear block copolymers poly(ethylene oxide)-b-polystyrene (PEO-PS-Cl) as arm precursors. The amphiphilic block copolymers PEO-PS-Cl with halogen chain-end functionality formed micelles in water and then were cross-linked by the divinyl cross-linkers. Due to the formation of cross-linker swollen micelles before the polymerization was initiated; star-star or star-linear chain reactions were not required for the star formation. The suppressed star-star coupling reactions resulted in the formation of star polymers with low PDI (Mw/M n;
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摘要：
Journal article (JA)
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页码：10378 / 10379
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