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
收藏
页码：9275 / 9280
页数：6
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