| 非离子型表面活性剂对氯乙烯-水界面张力和保胶能力的影响 |
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| 引用本文： | 黄东,林毓敏,黄志明,包永忠. 非离子型表面活性剂对氯乙烯-水界面张力和保胶能力的影响[J]. 聚氯乙烯, 2008, 36(12) |
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| 作者姓名： | 黄东 林毓敏 黄志明 包永忠 |
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| 作者单位： | 新疆天业股份有限公司石河子化工厂,新疆,石河子,832012;浙江大学聚合反应工程国家重点实验室,浙江,杭州,310027 |
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| 摘 要： | 以聚乙烯醇/羟丙基甲基纤维素(KH20/60SH50)为主分散剂.非离子表面活性剂Span 60为助分散剂,考察氯乙烯悬浮聚合中油-水界面张力和保胶能力随非离子表面活性剂浓度的变化,发现非离子表面活性剂降低界面张力的能力和效率都强于主分散剂,但界面保胶能力不如后者;从Gibbs界面吸附公式和R值理论出发建立非离子表面活性剂、主分散剂在油-水界面上的竞争吸附模型,认为主分散剂/助分散剂混合使用时,助分散剂优先吸附于界面,在降低界面张力的同时也使分散体系保胶能力下降.
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| 关 键 词： | 氯乙烯 悬浮聚合 分散剂 非离子表面活性剂 界面张力 保胶能力 |
Influences of non-ionic surfactant on vinyl chloride/water interfacial tension and colloidal protection ability |
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| HUANG Dong,LIN Yu-min,HUANG Zhi-ming,BAO Yong-zhong. Influences of non-ionic surfactant on vinyl chloride/water interfacial tension and colloidal protection ability[J]. Polyvinyl Chloride, 2008, 36(12) |
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| Authors: | HUANG Dong LIN Yu-min HUANG Zhi-ming BAO Yong-zhong |
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| Affiliation: | HUANG Dong1,LIN Yu-min2,HUANG Zhi-ming2,BAO Yong-zhong2(1.Shihezhi Chemical Factory,Xinjiang Tianye Group Co.,Shihezi 832012,China,2.State Key Laboratory of Polymer Reaction Engineering,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | Using poly(vinyl alcohol)/hydroxypropyl methyl cellulose(KH20/60SH50) as primary dispersant and non-ionic surfactant Span 60 as secondary dispersant,changes of oil-water interfacial tension and colloidal protection ability with the concentration of non-ionic surfactant in the vinyl chloride suspension polymerization system were investigated.It was found that non-ionic surfactant was more effective in decreasing the interfacial tension than the primary dispersant,while the colloidal protection ability of non... |
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| Keywords: | vinyl chloride suspension polymerization dispersant non-ionic surfactant interfacial tension colloidal protection ability |
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