Morphology and mechanical properties of polyolefinic thermoplastic elastomer I. Characterization of deformation process

被引：13
|
作者：
Asami, T
Nitta, K
机构：
[1] Kanazawa Univ, Dept Chem & Chem Engn, Kanazawa, Ishikawa 9208667, Japan
[2] Mitsui Chem Inc, Mat Sci Lab, Sodegaura, Chiba 2990265, Japan
[3] JAIST, Sch Mat Sci, Tatsunokuchi, Ishikawa 9231292, Japan
来源：
POLYMER | 2004年 / 45卷 / 15期
关键词：
polyolefinic thermoplastic elastomer; morphology; mechanical properties;
D O I：
10.1016/j.polymer.2004.05.017
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The structural origin of rubber elasticity in the polyolefinic thermoplastic elastomers composed of isotactic polypropylene (iPP) matrix and ethylene - propylene - diene rubber (EPDM) domains was investigated using scanning and transmission electron microscopes under uniaxial deformation and the computational analysis by a three dimensional finite element method. The rubber domains were dominantly deformed and elongated by accompanying localized yielding in iPP region between neighboring EPDM domains perpendicular to the stretching direction. The iPP region between adjacent EPDM domains in the stretching direction remained undeformed, suggesting that the undeformed iPP region plays the role in connecting rubber domains. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5301 / 5306
页数：6
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