Nonisothermal crystallization kinetics of ethylene terephthalate-ethylene oxide segmented copolymers with two crystallizing segments

被引：20

作者：

Kong, XH

Yang, XN

Zhou, E ^{[1
]}

Ma, DZ

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Polymer Phys Lab, Changchun 130022, Peoples R China

[2] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China

来源：

EUROPEAN POLYMER JOURNAL | 2000年 / 36卷 / 06期

基金：

中国国家自然科学基金;

关键词：

nonisothermal; crystallization kinetics; ET-EO segmented copolymer; Ozawa equation; DSC;

D O I：

10.1016/S0014-3057(99)00186-X

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 nonisothermal crystallization behavior of ethylene terephthalate-ethylene oxide segmented copolymers has been studied by means of differential scanning calorimetry (DSC). The kinetics of ET-EO segmented copolymer under nonisothermal crystallization conditions has been analyzed by the Ozawa equation. During the crystallization of the high-T-m segments (PET), the low-T-m segments (PEO) act as a noncrystalline diluent, the crystallization behavior of PET obeys the Ozawa theory. When the PEO segments begin to crystallize, the PET phase is always partially solidified and the presence of the spherulitic microstructure of PET profoundly influences the crystallization behavior, which results in that the overall crystallization process does not obey the Ozawa equation. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1085 / 1090

页数：6

共 19 条

[1] STUDY OF THE NONISOTHERMAL CRYSTALLIZATION OF POLY(ETHYLENE OXIDE) POLY(METHYL METHACRYLATE) BLENDS [J].