CHAIN STRUCTURE, PHASE MORPHOLOGY, AND TOUGHNESS RELATIONSHIPS IN POLYMERS AND BLENDS

被引：418

作者：

WU, SH

机构：

[1] Central Research and Development Department, E. I. du Pont de Nemours & Company, Wilmington, Delaware, 19880-0356, Experimental Station

来源：

POLYMER ENGINEERING AND SCIENCE | 1990年 / 30卷 / 13期

关键词：

D O I：

10.1002/pen.760301302

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We present chain structure, phase morphology, and toughness relationships in thermoplastic polymers and polymer/rubber blends. In neat polymers, molecular aspects of craze/yield behavior are controlled by two chain parameters: entanglement density νe and characteristic ratio C∞. The crazing stress is proportional to ν e1/2, and the yield stress is proportional to C∞. The dispersed rubber toughens a polymer/rubber blend mainly by promoting energy dissipation of the matrix. The toughening efficiency correlates with the rubber phase morphology and the chain structure of the matrix. Copyright © 1990 Society of Plastics Engineers

引用

页码：753 / 761

页数：9

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