Crystallization kinetics of poly(hexamethylene succinate)

被引：22

作者：

Franco, L ^{[1
]}

Puiggallí, J ^{[1
]}

机构：

[1] Univ Politecn Catalunya, Dept Engn Quim, E-08028 Barcelona, Spain

来源：

EUROPEAN POLYMER JOURNAL | 2003年 / 39卷 / 08期

关键词：

polyesters; crystallization kinetics; Avrami analysis; spherulites;

D O I：

10.1016/S0014-3057(03)00066-1

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Isothermal and nonisothermal crystallization kinetics of polyester 64 have been investigated by means of differential scanning calorimetry and optical microscopy. The Avrami analysis has been performed to obtain the kinetic parameters of primary crystallization. These indicate a three-dimensional spherulitic growth on heterogeneous nuclei for the isothermal crystallization, whereas an sporadic nucleation becomes dominant in the nonisothermal crystallization. The maximum crystallization rate of polyester 64 was deduced to take place at a temperature close to -3 degreesC. Polarizing light microscopy showed that spherulites with a negative birefringence are formed during isothermal crystallization, whereas transmission electron microscopy indicates that the b crystallographic axis is aligned parallel to the spherulitic radius. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1575 / 1583

页数：9

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