高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (8): 1545.

• 研究论文 • 上一篇    下一篇

AA/HPHP与AA/NPG聚酯化反应的动力学研究

乔迁, 张伟禄, 张东, 刘春艳, 田一光, 赵亚娟   

  1. 温州师范学院应用化学研究所, 325027
  • 收稿日期:2003-04-15 出版日期:2004-08-24 发布日期:2004-08-24
  • 基金资助:

    教育部科学技术研究重点项目(批准号:20011026)资助

Reaction Kinetics in Polyesterification of AA/HPHP and AA/NPG

QIAO Qian, ZHANG Wei-Lu, ZHANG Dong, LIU Chun-Yan, TIAN Yi-Guang, ZHAO Ya-Juan   

  1. Institute of Applied Chemistry, Wenzhou Normal College, Wenzhou 325027, China
  • Received:2003-04-15 Online:2004-08-24 Published:2004-08-24

PDF (PC)

被引次数

9

摘要： 考虑缩合水的排除对反应体系的影响,用体积浓度单位推导出一个新的聚酯反应总包动力学方程,并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中.研究发现,自催化聚酯反应的反应级数并不是固定值,对于AA/HPHP和AA/NPG两个聚酯化反应而言,低温时反应级数为2.5,高温时反应级数为3.0.此外,忽略缩合水的排除对聚酯化反应的动力学参数会产生较大误差.对于AA/HPHP和AA/NPG聚酯化反应,活化能相对误差分别达21.51%和11.33%;指前因子误差达到97.40%和87.96%.

关键词: 聚酯化反应, 动力学, 反应级数, 己二酸

Abstract: A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely,and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications,the reaction order was 2.5 at a low temperature,while 3.0 at a high temperature. Moreover,if the effect of the removal of condensation water was neglected,the kinetic parameter would have more deviation. For polyesterifications of AA/HPHP and AA/NPG,the relative deviation of activation energy was 21.51%,11.33%,respectively. The relative deviation of frequency factor was 97.4%,87.96%,respectively.

Key words: Polyesterification, Kinetics, Reaction order, Adipic acid

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