This paper establishes a kinetic model for the polymerization and condensation occurring during the melt transesterification of bisphenol A (BPA) and diphenyl carbonate (DPC). The model is based on molecular fragments and functional groups, treating polymers as an assembly of four types of chain segments. This study delves into the reaction mechanisms underlying the polycondensation of BPA and DPC, offering fresh perspectives on the process. Kinetic equations pertinent to the polycondensation mechanism were deduced from the analysis and then rigorously tested against experimental data to ascertain their validity. Kinetic constants emerged through the fitting of this experimental data, lending credence to the model’s accuracy. Utilizing the Aspen Plus software, the model was applied to simulate the annual production of 100,000 tons of polycarbonate (PC). The simulation facilitated the optimization of the operating conditions for each reactor, yielding valuable insights for scaling up to industrial production.

中文翻译：

---

用于模拟连续熔融酯交换聚碳酸酯合成的精细动力学模型


本文建立了双酚A（BPA）和碳酸二苯酯（DPC）熔融酯交换过程中发生聚合和缩合的动力学模型。该模型基于分子片段和官能团，将聚合物视为四种链段的集合。这项研究深入探讨了 BPA 和 DPC 缩聚反应的反应机制，为该过程提供了新的视角。从分析中推导出与缩聚机理相关的动力学方程，然后根据实验数据进行严格测试以确定其有效性。通过拟合这些实验数据得出了动力学常数，这为模型的准确性提供了可信度。利用Aspen Plus软件，该模型模拟了年产10万吨聚碳酸酯（PC）的产量。模拟促进了每个反应器操作条件的优化，为扩大工业生产提供了宝贵的见解。