文献类型：期刊文献

中文题名：PET缩聚过程反应与传质Ⅰ反应动力学研究

英文题名：REACTION AND MASS-TRANSFER IN POLYCONDENSATION PROCESS OF PET Ⅰ REACTION KINETICS

作者：赵玲[1];朱中南[1];戴干策[1]

机构：[1]华东理工大学联合化学反应工程研究所,上海200237

年份：2000

卷号：16

期号：2

起止页码：159

中文期刊名：化学反应工程与工艺

外文期刊名：Chemical Reaction Engineering and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：PET;缩聚;传质;反应动力学;界面浓度;聚酯

外文关键词：PET; polycondensation; degradation; reaction kinetics; interfacial concentration

摘要：聚对苯二甲酸乙二醇酯缩聚过程是反应 -传质耦合过程 ,本文利用静止膜实验在排除传质影响情况下研究了 PET缩聚过程反应规律 ,建立了链增长、链降解反应动力学模型 ,并利用可逆反应极限的概念确定了小分子界面浓度。
Reaction and mass transfer are coupled in polycondensation process of poly(ethylene terephthalate). The characterics of reactions were studied without the effect of mass transfer by using stagnant film experiments in this paper. It was indicated from experiments that the intrinsic viscosity has a maximum value under experimental temperatures and pressures. Based on the experiments, the reaction kinetic models were established. The polycondensation reaction rate equation can be showed as follows, d[g]/d t=1.4776×10 9 exp (-112630/RT)( [C E] 2-[C E ]  2 ) degradation of diester rate equation as d[Z]/d t=7.2×10 9 exp (-158270/RT) [Z] The interfacial concentration of small molecules [g]  can be calculated by the limit of reversible reaction as follows, [g ] =5.2107×10 -29 exp (33209/T)×P [WT5HZ]