CIESC Journal

• 化工学报 • 上一篇    下一篇

醋酸乙烯酯乳液聚合数学模型(Ⅱ) 阶段Ⅱ与阶段Ⅲ模型

曹同玉,甘志华,许涌深   

  1. 天津大学应用化学系!天津300072,天津大学应用化学系!天津300072中国科学院长春应用化学研究所,天津大学应用化学系!天津300072
  • 出版日期:1994-12-25 发布日期:1994-12-25

MATHEMATICAL MODEL OF EMULSION POLYMERIZATION OF VINYL ACETATE (Ⅱ)MODEL FOR STAGE Ⅱ AND STAGE Ⅲ

Cao Tongyu, Can Zhihua and Xu Yongshen(Department of Applied Chemistry, Tianjin University, Tianjin 300072)   

  • Online:1994-12-25 Published:1994-12-25

摘要: 研究了较大亲水性单体醋酸乙烯酯(VAc)乳液聚合动力学,着重剖析了自由基解吸的影响及水相中的聚合反应对总聚合反应速率的贡献,提出了阶段Ⅱ和阶段ⅢVAc乳液聚合数学模型,成功地预计了聚合反应速率、自由基在乳胶粒中的分布及乳胶粒中平均自由基数随转化率的变化规律.并将模型预计结果和实验数据进行了比较和讨论.

Abstract: The kinetics of emulsion polymerization for the more hydrophilic monomer VAc is studied. The effect of free radical desorption and the contribution of the polymerization in aqueous phase to total polymerization rate are analyzed. A mathematical model for stage II and I of emulsion polymerization of VAc is proposed. It can be successfully used to predict the polymerization rate, the distribution of free radicals among latex particles and the change of the average number of free radicals in one particle along with monomer conversion. The model prediction and experimental data are compared and discussed.

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