石油化工2025，Vol.54Issue(11)：1581-1586,6.DOI:10.3969/j.issn.1000-8144.2025.11.005
基于原位拉曼光谱的聚对苯二甲酸丁二醇酯和聚(对苯二甲酸-共-己二酸)丁二醇酯酯化反应动力学研究
Kinetic study of esterification of polybutylene terephthalate and poly(butylene adipate-co-terephthalate)by in situ Raman spectroscopy
高甲 1吴华志 1常诚 2顾雪萍 2史路飞 1冯连芳2
作者信息
- 1. 中国石化 仪征化纤有限责任公司,江苏 仪征 211900
- 2. 浙江大学 化学工程与生物工程学院 化学工程与低碳技术全国重点实验室,浙江 杭州 310027||浙江大学 衢州研究院,浙江 衢州 324000
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摘要
Abstract
Polybutylene terephthalate(PBT)and poly(butylene adipate-co-terephthalate)(PBAT)are critical engineering plastics and biodegradable materials,whose properties largely depend on the reaction progress during the esterification stage.Establishing precise esterification process models through reaction kinetics serves as a powerful tool for efficiently studying the large-scale production of PBT and PBAT.The degree of esterification is a key indicator reflecting the quality of the esterification process.In this study,in situ Raman spectroscopy was employed to achieve real-time and in situ monitoring of degree of esterification during the esterification reactions of PBT and PBAT.An esterification kinetics model was developed based on the terephthalic acid dissolution equation and step-growth polymerization mechanism equations.Model parameters were calibrated using the in situ degree of esterification monitoring results,enabling the calculation of the apparent pre-exponential factors and activation energies for both PBT and PBAT esterification.The simulated degree of esterification curves exhibit a mean squared error not exceeding 0.08 compared to the in situ monitoring data,demonstrating that the proposed kinetics model can predict the degree of esterification of PBT and PBAT within acceptable error limits.This work provides a robust framework for optimizing esterification processes in industrial applications.关键词
聚对苯二甲酸丁二醇酯/聚(对苯二甲酸-共-己二酸)丁二醇酯/逐步聚合/反应动力学/酯化度Key words
polybutylene terephthalate/poly(butylene adipate-co-terephthalate)/step-growth polymerization/reaction kinetics/degree of esterification分类
化学化工引用本文复制引用
高甲,吴华志,常诚,顾雪萍,史路飞,冯连芳..基于原位拉曼光谱的聚对苯二甲酸丁二醇酯和聚(对苯二甲酸-共-己二酸)丁二醇酯酯化反应动力学研究[J].石油化工,2025,54(11):1581-1586,6.
