Mechanism of structural formation by uniaxial deformation in amorphous poly(ethylene terephthalate) above the glass temperature

被引：75

作者：

Kawakami, D ^{[1
]}

Ran, SF ^{[1
]}

Burger, C ^{[1
]}

Fu, B ^{[1
]}

Sics, I ^{[1
]}

Chu, B ^{[1
]}

Hsiao, BS ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

来源：

MACROMOLECULES | 2003年 / 36卷 / 25期

关键词：

D O I：

10.1021/ma034791b

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An in situ study of structural development in amorphous poly(ethylene terephthalate) under uniaxial deformation above Tg (90°C) was carried out using synchrotron WAXD. The results showed several new insights into this subject. The load-strain curve can be divided into three zones (I, II, III) with each zone having a unique structure and property relationship. Zone I represents the development of mesophase. Zone II represents the strain-hardening region, which is marked by the development of a three-dimensional network of imperfect crystallites and mesophoric chains. Zone III represents the further formation of mesophase and the growth of a stable crystal phase, which is characteristic of a constant load-strain ratio.

引用

页码：9275 / 9280

页数：6

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