The effect of molecular weight on the crystallization kinetics of polycaprolactone

被引：153
作者：
Jenkins, M. J. [1 ]
Harrison, K. L. [1 ]
机构：
[1] Univ Birmingham, Sch Engn, Birmingham B15 2TT, W Midlands, England
来源：
POLYMERS FOR ADVANCED TECHNOLOGIES | 2006年 / 17卷 / 06期
关键词：
differential scanning calorimetry (DSC); Avrami equation; polycaprolactone (PCL); crystallization; kinetics (polym.);
D O I：
10.1002/pat.733
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 crystallization kinetics and degree of crystallinity of polycaprolactone (PCL) were studied using the technique of differential scanning calorimetry (DSC). The crystallization exotherms measured using DSC were analyzed using a modified Avrami equation. The modification limited the analysis of the data to the primary crystallization process, where the Avrami equation is applicable. Both the degree of crystallinity and primary composite rate constant were found to decrease with increasing molecular weight. The observations have been explained in terms of the unified reptation-nucleation theory. Copyright (c) 2006 John Wiley & Sons, Ltd.
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页码：474 / 478
页数：5
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