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首页> 外文期刊>Journal of Applied Polymer Science >A comprehensive model for solid-state polycondensation of poly(ethylene terephthalate): Combining kinetics with crystallization and diffusion of acetaldehyde
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A comprehensive model for solid-state polycondensation of poly(ethylene terephthalate): Combining kinetics with crystallization and diffusion of acetaldehyde

机译：聚对苯二甲酸乙二酯固态缩聚的综合模型：结合动力学与乙醛的结晶和扩散

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摘要

A comprehensive mathematical model was established by considering the main and side reactions for solid-state polycondensation of poly(ethylene terephthalate). The effect of temperature on chain mobility was used to estimate the rate constants of chemical reactions. The polymer crystalline fraction was modeled as containing only repeat units, thus concentrating end groups and condensates in the amorphous fraction. The diffusion coefficient of acetaldehyde was calculated by the model. The simulation results of this comprehensive model were validated by experimental data reported in literature. The model predictions were important clues for further experimental study on poly(ethylene terephthalate) solid-state polycondensation. (C) 2002 John Wiley Sons, Inc. [References: 17]
机译：考虑到聚对苯二甲酸乙二醇酯的固态缩聚反应的主反应和副反应，建立了一个综合数学模型。温度对链迁移率的影响用于估计化学反应的速率常数。将聚合物结晶级分建模为仅包含重复单元，从而在无定形级分中浓缩端基和缩合物。通过该模型计算乙醛的扩散系数。通过文献报道的实验数据验证了该综合模型的仿真结果。该模型预测为进一步研究聚对苯二甲酸乙二醇酯固态缩聚的实验提供了重要线索。 （C）2002 John Wiley Sons，Inc. [参考：17]

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