CIESC Journal

• 化工学报 • 上一篇    下一篇

自由基聚合/扩散动力学模型与仿真

黄岐善,翁志学,黄志明,潘祖仁   

  1. 浙江大学高分子科学与工程研究所!杭州310027,浙江大学高分子科学与工程研究所!杭州310027,浙江大学高分子科学与工程研究所!杭州310027,浙江大学高分子科学与工程研究所!杭州310027
  • 出版日期:1999-08-25 发布日期:1999-08-25

KINETIC MODEL OF FREE RADICAL POLYMERIZATION INCLUDING DIFFUSION PHENOMENA

Huang Qishan, Weng Zhixue, Huang Zhiming and Pan Zuren(Institute of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027)   

  • Online:1999-08-25 Published:1999-08-25

摘要: 基于自由体积和反应动力学理论,考虑了非稳态过程“笼蔽效应”对引发效率的影响,大分子自由基质心扩散、链段重排扩散、反应扩散对速率常数的影响,聚合物系体积变化对浓度的影响,松弛效应对于自由体积的影响.建立了自由基聚合动力学模型,并就苯乙烯本体聚合作了仿真验证.

Abstract: Based on free volume and chemical reaction kinetic theories, a kinetic model of free radical polymerization including diffusion phenomena was established. Unsteady process-cage effect which could affect initiator efficiency, and mass centre translation diffusion, segment rearrangement diffusion and reaction diffusion of the radical were considered. The volume shrinkage and exceeding free volume were considered also. This model was applied to the simulation of styrene bulk polymerization and agreed well with the experimental result.

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