PBA-PMMA 3-arm star block copolymer thermoplastic elastomers

被引：45
|
作者：
Dufour, Bruno [1 ]
Koynov, Kaloian [2 ]
Pakula, Tadeusz [2 ]
Matyjaszewski, Krzysztof [1 ]
机构：
[1] Carnegie Mellon Univ, Dept Chem, Ctr Macromol Engn, Pittsburgh, PA 15213 USA
[2] Max Planck Inst Polymer Res, D-55021 Mainz, Germany
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2008年 / 209卷 / 16期
基金：
美国国家科学基金会;
关键词：
films; morphology; PBA-b-PMMA; poly(methyl methacrylate)-block-poly(butyl acrylate); star-block copolymers; thermoplastic elastomers;
D O I：
10.1002/macp.200800151
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of well-defined poly(methyl methacrylate)-block-poly(butyl acrylate) 3-arm star block copolymers have been synthesized by ATRP. The incorporation of polar hard segment of PMMA was made possible with the aid of halogen exchange technique. Phase-separated morphology of cylindrical PMMA domains hexagonally arranged in the pBA matrix was observed by small angle X-ray scattering in all studied materials. The mechanical and thermal properties of the PBA-PMMA 3-arm star block copolymers have been thoroughly characterized and their thermoplastic elastomer behavior was studied. It was found that the tensile properties of these materials are comparable with those of their linear ABA type block copolymer counterparts with similar compositions.
引用
收藏
页码：1686 / 1693
页数：8
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