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学科主题: 高分子化学
题名: Synthesis of Starlike PtBA-g-PEO Amphiphilic Graft Copolymer via Highly Efficient Cu-Catalyzed SET-NRC Reaction at Ambient Temperature
其他题名: 室温通过高效Cu催化SET-NRC反应合成星形PtBA-g-PEO两亲性接枝共聚物
作者: Li YG(李垚功) ; Zhang YQ(张亚琴) ; Zhai SJ(翟素娟) ; Deng Y(邓妍) ; Xiong HM(熊辉明) ; Lu GL(陆国林) ; Huang XY(黄晓宇)
通讯作者: 熊辉明 ; 黄晓宇
刊名: J. Polym. Sci. Pol. Chem.
发表日期: 2011
卷: 49, 期:1, 页:23-34
收录类别: SCI
部门归属: 中科院上海有机化学研究所; 上海交通大学
英文摘要: Two new amphiphilic star graft copolymers bearing hydrophobic poly(tert-butyl acrylate) backbone and hydrophilic poly(ethylene oxide) (PEO) side chains with different molecular weights were synthesized by sequential reversible addition fragmentation chain transfer (RAFT) polymerization and single electron transfer-nitroxide radical coupling (SET-NRC) reaction under mild conditions. RAFT homopolymerization of tert-butyl 2-((2-bromopropanoyloxy)methyl)acrylate was mediated by a four-armed chain transfer agent in a controlled way to afford a well-defined starlike backbone with a narrow molecular weight distribution (M-w/M-n = 1.26). The target poly(tert-butyl acrylate)-g-PEO (PtBA-g-PEO) star graft copolymers were synthesized by SET-NRC reaction between Br-containing PtBA-based starlike backbone and PEO end functionalized with 2,2,6,6-tetramethyl-piperidine-1-oxyl (TEMPO) group using copper/N,N,N',N'-N"-pentamethyldiethylenetriamine as catalytic system at ambient temperature via grafting-onto strategy. The critical micelle concentration values of the obtained amphiphilic star graft copolymers in aqueous media and brine were determined by fluorescence probe technique using pyrene as probe. Diverse micellar morphologies were formed by varying the content of hydrophilic PEO segment as well as the initial concentration of stock solution. In addition, poly(acrylic acid)-g-PEO double hydrophilic star graft copolymers were obtained by selective acidic hydrolysis of hydrophobic PtBA starlike backbone without affecting PEO side chains. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 23-34, 2011
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000286344300003
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/24439
Appears in Collections:高分子材料研究室_期刊论文

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Recommended Citation:
Li YG,Zhang YQ,Zhai SJ,et al. Synthesis of Starlike PtBA-g-PEO Amphiphilic Graft Copolymer via Highly Efficient Cu-Catalyzed SET-NRC Reaction at Ambient Temperature[J]. J. Polym. Sci. Pol. Chem.,2011,49(1):23-34.
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