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过硫酸钾引发苯乙烯微乳液聚合
引用本文:徐相凌,张志成.过硫酸钾引发苯乙烯微乳液聚合[J].高等学校化学学报,1997,18(9):1546-1550.
作者姓名:徐相凌  张志成
作者单位:中国科学技术大学应用化学系!合肥,230026
摘    要:以具有Y型结构的乳化剂HOA制备苯乙烯微乳液,能有效提高体系中单体浓度和单体对乳化剂的比例,用过硫酸眼具有苯乙烯含量较高的微乳液聚合,记录聚合速率随转化率的变化,观测到了聚合恒速期的存在,恒速期随单体浓度减小,过硫酸钾浓度增加及乳化剂浓度增加而缩短,还研究了聚合动力学,探讨了微乳液聚合的机理。

关 键 词:微乳液聚合  Y型乳化剂  HOA  苯乙烯  过硫酸钾

Microemulsion Polymerization of Styrene Initiated with Potassium Persulfate
XU Xiang-Ling, ZHANG Zhi-Cheng, ZHANG Man-Wei, GE Xue-Wu, WU Zhi-Chao.Microemulsion Polymerization of Styrene Initiated with Potassium Persulfate[J].Chemical Research In Chinese Universities,1997,18(9):1546-1550.
Authors:XU Xiang-Ling  ZHANG Zhi-Cheng  ZHANG Man-Wei  GE Xue-Wu  WU Zhi-Chao
Abstract:The n1onomer content and the ratlo of monomer to emulsifier in styrene mi-croemulsion were greatly uplifted when it was stabllized with an emulsifier with Y structure.The microemulsion was polyrnerized in dilatometer with potassium persulfate as an initiator.The change of polymerization rate with conversion was recorded, and the plateau of polymer-ization rate in microemulsion polymerization of styrene was first observed. The Iength of theplateau was shortened with the increase of KPS concentration and emulsifier concentration,or with the decrease of monomer concentration. The polymerlzation kinetics and the poly-merization mechanisms were also discussed.
Keywords:Microemulsion polyrnerization  Nucleate mechanism  Plateau of polymerization rate  Emulsifier with Y structure  
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