Isothermal crystallization behavior of biodegradable poly (butylene succinate-co-terephthalate) (PBST) copolyesters at high undercoolings

被引：0
|
作者：
Xu, Xin-Jian [1 ]
Li, Fa-Xue [1 ]
Luo, Sheng-Li [1 ]
Yu, Jian-Yong [1 ]
机构：
[1] College of Textiles, Donghua University, Shanghai 201620, China
来源：
Journal of Donghua University (English Edition) | 2008年 / 25卷 / 04期
关键词：
Undercooling - Nucleation - Butenes - Crystallization kinetics;
D O I：
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中图分类号：
学科分类号：
摘要：
Poly ( butylene succinate-co-terephthalate) (PBST) copolyesters were prepared by polycondensatioa The isothermal crystallization behavior of the as-prepared copolyesters was investigated by depolarized light intensity ( DLI ) at high undercoolings. According to Avrami equation, the exponent n, independent of the crystallization temperature, is at a range of 2.5 to 3. 4, which probably corresponds to the heterogeneous nucleation and a 3-dirnensional spherulitic growth. The maximum crystallization rate, very useful to polymer processing, was found at about 90°C based on the half-crystallization time t1/2analysis.
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页码：405 / 407
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