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采用乳液聚合方法,不使用任何乳化剂,将甲基丙烯酸甲酯(MMA)在干酪素(CA)存在下使用叔丁基过氧化氢为引发剂,通过接枝聚合制备了直径在150 nm左右的具核壳结构的PMMA/CA纳米复合乳胶粒,乳胶粒的核壳结构通过透射电镜得到了证实.探讨了反应温度、引发剂用量、核壳质量比等条件对单体转化率和接枝效率的影响.阐明了制备此类复合乳胶粒的实验条件,对其形成机理进行了较深入的探讨.
Using emulsion polymerization method without using any emulsifier, methyl methacrylate (MMA) was prepared by graft polymerization using t-butyl hydroperoxide as initiator in the presence of casein (CA) Of the core-shell structure of PMMA / CA nano-composite latex particles, the latex core-shell structure was confirmed by transmission electron microscopy. The reaction temperature, the amount of initiator, the ratio of core to shell mass ratio of monomer conversion and grafting Efficiency.Emphasized the experimental conditions for the preparation of such composite latex particles, the formation mechanism of a more in-depth discussion.