【作者】 刘莲英； 杨万泰；

【Author】 Lianying Liu, Wantai Yang (Key Laboratory of Science & Technology of Controllable Reactions, Ministry of Education, College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029)

【机构】 可控化学反应科学与技术基础教育部重点实验室,材料科学与工程学院,北京化工大学；

【摘要】 UV光引发聚合通常用于透明溶液体系或透明／半透明的微乳液体系,本文则报道了不透明反相乳液体系的UV光引发聚合新方法。使用普通中压汞灯并辅以适当搅拌,UV光引发丙烯酰胺或丙烯酸 (钠)／水／煤油／Span80+Op10反相乳液聚合可在短时间内完成,所得聚合物分子量达千万,对聚合反应的成核机理和影响聚合反应的各种因素,如表面入射光强、光引发剂浓度、单体浓度、乳化剂用量、反应温度等进行了研究。更多还原

【Abstract】 A novel method was devised to polymerize water-soluble monomer acrylamide and acrylic acid in an opaque inverse emulsion system by UV light initiation, which was usually used in a transparent system or semi-transparent system, such as solution system and micro-emulsion system. Using 2,2-dimethoxy-2-phenylacetophenone (BDK) as initiator, Span80+Op10 as a blend emulsifier, inverse emulsion polymerizations of acrylamide and acryiate sodium in kerosene could be completed in a short time under the medium pressure mercury lamp and proper mixing and produce polymer with molecular weight of 107. The nucleation mechanism and influences on the kinetic behaviors of photopolymerizations of acrylamide and acryiate sodium in inverse emulsion were investigated.更多还原