| 醋酸乙烯酯乳液聚合数学模型(Ⅰ) 阶段Ⅰ模型 |
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| 引用本文： | 曹同玉 甘块结. 醋酸乙烯酯乳液聚合数学模型(Ⅰ) 阶段Ⅰ模型[J]. 化工学报, 1994, 45(6): 643-650 |
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| 作者姓名： | 曹同玉 甘块结 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 研究了较大亲水性单体醋酸乙烯酯(VAc)乳液聚合的乳胶粒生成和生长过程,提出了VAc乳液聚合阶段Ⅰ数学模型.该模型既考虑到胶束成核机理,又考虑到水相中低聚物沉淀成核机理.研究了自由基解吸与吸附在单体珠滴上的乳化剂对VAc乳液聚合阶段Ⅰ动力学的影响,并对模型预计结果与实验数据进行了比较和讨论.
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| 关 键 词： | 乳液聚合 醋酸乙烯酯 低聚物 沉淀成核 数学模型 |
MATHEMATICAL MODEL OF EMULSION POLYMERIZATION OF VINYL ACETATE ( I )MODEL FOR STAGE I |
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| Cao Tongyu,Gan Zhihua and Xu Yongshen. MATHEMATICAL MODEL OF EMULSION POLYMERIZATION OF VINYL ACETATE ( I )MODEL FOR STAGE I[J]. Journal of Chemical Industry and Engineering(China), 1994, 45(6): 643-650 |
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| Authors: | Cao Tongyu Gan Zhihua Xu Yongshen |
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| Abstract: | ; The processes of neucleation and growth of latex particles in emulsion polymerization for the more hydrophilic monomers such as VAc are studied. A mathematical model is proposed for stage I of emulsion polymerization of VAc. The model considers the neucleation mechanisms both by micelles and by oligomer precipitation. Meanwhile, the effects of free radical desorption from latex particles to aqueous phase and the amount of emulsifier adsorbed onto monomer droplets on the kinetics of stage I of the emulsion polymerization for VAc are taken into account. Furthermore, the prediction results by the model and the experimental data are compared and discussed. |
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| Keywords: | emulsion polymerization vinyl acetate neucleation by oligomer precipitation |
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