Synthesis and characterization of well-defined ABC-type triblock copolymers via atom transfer radical polymerization and stable free-radical polymerization

被引：46
|
作者：
Tunca, U [1 ]
Erdogan, T [1 ]
Hizal, G [1 ]
机构：
[1] Istanbul Tech Univ, Dept Chem, TR-80626 Istanbul, Turkey
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2002年 / 40卷 / 12期
关键词：
atom transfer radical polymerization (ATRP); stable free-radical polymerization (SFRP); triblock copolymer;
D O I：
10.1002/pola.10300
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
An asymmetric difunctional initiator 2-phenyl-2-[(2,2,6,6 tetramethylpiperidino)oxyl ethyl 2-bromo propanoate (1) was used for the synthesis of ABC-type methyl methacrylate (MMA)-tert-butylacrylate (tBA)-styrene (St) triblock copolymers via a combination of atom transfer radical polymerization (ATRP) and stable free-radical polymerization (SFRP). The ATRP-ATRP-SFRP or SFRP-ATRP-ATRP route led to ABC-type triblock copolymers with controlled molecular weight and moderate poly-dispersity (M-w/M-n < 1.35). The block copolymers were characterized by gel permeation chromatography and H-1 NMR. The retaining chain-end functionality and the applying halide exchange afforded high blocking efficiency as well as maintained control over entire routes. (C) 2002 Wiley Periodicals, Inc.
引用
收藏
页码：2025 / 2032
页数：8
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