将甲基丙烯酸3-三甲氧基硅丙酯(MPS)引入以小分子烃为模板的苯乙烯细乳液聚合中,制备有机-无机杂化纳米胶囊。MPS由于其水解产物的亲水性及能够水解-缩合反应的特性使得MPS能够同时起界面聚合诱导剂和自由基锚定剂的作用,制备有机-无机杂化纳米胶囊,但囊化率不高。为了强化MPS的诱导和锚定作用,向体系中进一步加入N-异丙基丙烯酰胺(NIPAM)、二乙烯基苯(DVB),可以得到囊化率更高的产品。详细讨论了NIPAM、DVB用量对有机-无机杂化纳米胶囊形态的影响。乳化剂用量以及小分子烃模板含量也是影响胶囊形态的重要因素。
3-Methacryloxypropyltrimethoxysilane(MPS) was introduced into the styrene miniemulsion polymerization templated by low molecular weight hydrocarbon to prepare organic-inorganic hybrid nanocapsules. The hydrophilicity of the MPS hydrolysates and the hydrolysis-condensation reactions of MPS led to the interfacial polymerization and radicals anchored at the interface of latex and water. The organic-inorganic hybrid nanocapsules were only obtained with MPS, but the capsulation fraction was low. In order to increase the induction and anchorage functions of MPS to increase the capsulate fractions, N-isopropylacrylamide(NIPAM) and divinylbenzene(DVB) were introduced into the polymerization system. The effects of NIPAM and DVB amounts on the morphology of nanocapsules were discussed. The nanocapsule morphology was also determined by emulsifier concentration and the amount of small molecular weight hydrocarbon.