Architecture and solution properties of AB-type brush-block-brush amphiphilic copolymers via ATRP techniques

被引：57

作者：

Ishizu, K ^{[1
]}

Satoh, J ^{[1
]}

Sogabe, A ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Organ Mat & Macromol, Int Res Ctr Macromol Sci, Meguro Ku, Tokyo 1528552, Japan

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2004年 / 274卷 / 02期

关键词：

D O I：

10.1016/j.jcis.2004.03.044

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Atom transfer radical polymerization (ATRP) was applied to the synthesis of AB-type brush-block-brush amphiphilic copolymers. The procedure included the following steps: (1) ATRP of methacryloyl-terminated poly(ethylene glycol methylether) macromonomer (PEG-MC) gave well-defined PEG brush macroinitiator, (2) subsequent ATRP of 2-hydroxyethyl methacrylate (HEMA) with this brush macroinitiator provided PEG brush-block-PHEMA (brush-block-coil) diblock copolymers, (3) esterification of the pendant hydroxy groups of PHEMA block with 2-bromoisobutyryl bromide yielded a block-type polyinitiator, brush-block-poly(2-(2-bromoisobutyryloxy)ethyl methacrylate) (PBIEM), (4) ATRP of HEMA using brush-block-PBIEM as polyinitiator provided AB-type brush-block-brush amphiphilic copolymers. Dilute-solution properties of such AB-type copolymer brushes were investigated by static and dynamic light scatterings. As a result, this copolymer exhibited a slightly ellipsoidal shape, i.e., Janus-type structure, in solution. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：472 / 479

页数：8

共 32 条

[11] Encapsulation of polypyrrole by internal domain modification of double-cylinder-type copolymer brushes [J].