| RADICAL DESORPTION IN EMULSION POLYMERIZATION OF VINYL ACETATE |
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| 作者姓名： | 曹同玉 甘志华 王艳君 许涌深 柯长颢 |
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| 作者单位： | Cao Tongyu Can Zhihua Wang Yanjun
Xu Yongshen Ke Changhao
Department of Applied Chemistry，Tianjin University，Tianjin 300072，China |
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| 基金项目： | Supported by the National Natural Science Foundation of China |
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| 摘 要： | In the present paper a model equation for calculating the radical desorption rate constant,k_0,in the emulsion polymerization of vinyl acetate was suggested and the various parameters forevaluating k_0 were determined.Effects of reaction temperature,emulsifier concentration,initiator con-centration,monomer conversion and phase ratio on k_0 were studied.It indicates that the desorptionof radicals from latex particles to aqueous phase must be taken into account in the modelling ofemulsion polymerization for the monomers with higher hydrophilicity such as vinyl acetate.
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| 关 键 词： | emulsion polymerization vinyl acetate radical desorption latex particle |
| 收稿时间： | 1993-12-8 |
| 修稿时间： | 1994-8-8
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RADICAL DESORPTION IN EMULSION POLYMERIZATION OF VINYL ACETATE |
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| CAO Tongyu,GAN Zhihua,WANG Yanjun,XU Yongshen,KE Changhao.RADICAL DESORPTION IN EMULSION POLYMERIZATION OF VINYL ACETATE[J].Chinese Journal of Chemical Engineering,1995,3(4):200-207. |
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| Authors: | CAO Tongyu GAN Zhihua WANG Yanjun XU Yongshen KE Changhao |
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| Affiliation: | Department of Applied Chemistry, Tianjin University, Tianjin 300072, China |
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| Abstract: | In the present paper a model equation for calculating the radical desorption rate constant, ka, in the emulsion polymerization of vinyl acetate was suggested and the various parameters for evaluating ka were determined. Effects of reaction temperature, emulsifier concentration, initiator concentration, monomer conversion and phase ratio on k0 were studied. It indicates that the desorption of radicals from latex particles to aqueous phase must be taken into account in the modelling of emulsion polymerization for the monomers with higher hydrophilicity such as vinyl acetate. |
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| Keywords: | emulsion polymerization vinyl acetate radical desorption latex particle |
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