| 聚甲基丙烯酸甲酯预聚物作为助稳定剂的细乳液聚合速率研究 |
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| 引用本文： | 张震乾,吴海银.聚甲基丙烯酸甲酯预聚物作为助稳定剂的细乳液聚合速率研究[J].高校化学工程学报,2009,23(1). |
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| 作者姓名： | 张震乾 吴海银 |
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| 作者单位： | 江苏工业学院,材料科学与工程系,江苏,常州,213164 |
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| 摘 要： | 以聚甲基丙烯酸甲酯(PMMA)预聚物为助稳定剂、十二烷基硫酸钠为乳化剂、十六醇为助乳化剂和过硫酸钾为引发剂,研究甲基丙烯酸甲酯(MMA)的细乳液聚合反应速率.考察乳化剂浓度、助乳化剂浓度、引发剂浓度、预聚物浓度、预聚物分子量以及反应温度对聚合速率的影响.结果表明:聚合速率RP随着乳化剂浓度或反应温度的提高而增加,随着助乳化剂浓度的提高而减小,引发剂浓度对RP影响不明显.在相同条件下,加入预聚物的细乳液体系聚合速率RP在聚合反应前期比常规细乳液有明显提高:PMMA(MH=520000)浓度为2×10-3mmol·L-1时,RP的最大峰值为1.84×10-2mol·L-1·min-1.预聚物PMMA在MMA细乳液聚合体系中,可以提高聚合速率和增加体系稳定性.
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| 关 键 词： | 细乳液聚合 预聚物 助稳定剂 聚合速率 |
Rate of the Miniemulsion Polymerization Costabilized by Pre-polymer PMMA |
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| ZHANG Zhen-qian,WU Hai-yin.Rate of the Miniemulsion Polymerization Costabilized by Pre-polymer PMMA[J].Journal of Chemical Engineering of Chinese Universities,2009,23(1). |
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| Authors: | ZHANG Zhen-qian WU Hai-yin |
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| Affiliation: | Department of Materials Science and Engineering;Jiangsu Polytechnic University;Changzhou 213164;China |
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| Abstract: | The rate of methyl methacrylate (MMA) miniemulsion polymerization with pre-polymer (polymerized methyl methacrylate (PMMA)) as costabilizer, sodium dodecyl sulfate (SDS) as emulsifier, cetyl alcohol (CA) as cosurfactant and potassium persulfate (KPS) as initiator was studied. The effects of concentrations of emulsifier, cosurfactant, initiator and pre-polymer, molecular weight of pre-polymer and reaction temperature on the polymerization rate were investigated. The results show that the rate of polymerizati... |
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| Keywords: | miniemulsion polymerization pre-polymer costabilizer polymerization rate |
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