Role of chain symmetry and hydrogen bonding in segmented copolymers with monodisperse hard segments

被引：163
|
作者：
Sheth, JP
Klinedinst, DB
Wilkes, GL
Iskender, Y
Yilgor, I
机构：
[1] Virginia Polytech Inst & State Univ, Dept Chem Engn, Blacksburg, VA 24061 USA
[2] Koc Univ, Dept Chem, TR-34450 Istanbul, Turkey
来源：
POLYMER | 2005年 / 46卷 / 18期
关键词：
polyurea; polyurethane; segmented copolymers;
D O I：
10.1016/j.polymer.2005.04.041
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Thermoplastic segmented polyurethane and polyurea copolymers whose monodisperse hard segments are based on only a single diisocyanate molecule are discussed. The solid-state structure-property behavior of these materials demonstrates that a proper selection of the level of symmetry and/or cohesiveness of the hard microdomains may allow elimination of the traditional requirement of chain extension to obtain melt processable segmented urethanes, and more specifically, urea copolymers with useful structural properties. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：7317 / 7322
页数：6
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