ABC triblock copolymers prepared using atom transfer radical polymerization techniques

被引:111
作者
Davis, KA [1 ]
Matyjaszewski, K [1 ]
机构
[1] Carnegie Mellon Univ, Dept Chem, Ctr Macromol Engn, Pittsburgh, PA 15213 USA
关键词
D O I
10.1021/ma002050u
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Triblock copolymers for, alternatively, terpolymers) of the type ABC, where A, B, and C represent distinct blocks based on different monomers, have been prepared using atom transfer radical polymerization (ATRP) techniques. Various macroinitiators, including mono- and difunctional poly(tert-butyl acrylate), difunctional poly(styrene), and trifunctional p(St), were prepared and used for block copolymerizations with different monomers, including methyl acrylate, methyl methacrylate, and vinylpyridine. The block copolymers were characterized by gel permeation chromatography to determine chain end functionality and by H-1 NMR to measure the final composition of the block copolymers. Additionally, guidelines are presented for preparing block copolymers using ATRP techniques. Topics addressed include approaches to retaining the chain end functionality, achieving a high blocking efficiency, as well as strategies to maintain control over the ATRP reaction.
引用
收藏
页码:2101 / 2107
页数:7
相关论文
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