Crystallization of poly(Butylene terephthalate)
Crystallization of poly(Butylene terephthalate)
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DOI：
10.1002/pen.10160
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发表时间：
2003-12-01
影响因子：
3.2
通讯作者：
Righetti, MC
中科院分区：
文献类型：
--
作者：
Di Lorenzo, ML;Righetti, MC
对聚对苯二甲酸丁二醇酯（PBT）的结晶过程进行了深入的分析。在459和491 K之间实验测量了等温晶体生长速率，并根据霍夫曼和劳里岑理论进行了分析。一个II-III制度的转变发生在484 K，伴随着晶体形态的变化。通过非线性拟合，得到了成核常数K-g的精确值。计算了侧表面自由能σ，并由此获得了Alas-Staveley表达式的α参数。
This article provides a thorough analysis of the crystallization process of poly(butylene terephthalate) (PBT). isothermal crystal growth rates have been experimentally measured between 459 and 491 K, and analyzed according to the Hoffman and Lauritzen theory. A II-III regime transition occurs at 484 K, accompanied by a change in crystal morphology. By means of a non-linear fitting procedure, precise values of the nucleation constant K-g were obtained. The lateral surface free energy sigma was calculated and, from this, the alpha parameter of the Thomas-Staveley expression was obtained.