温敏型有机-无机杂化纳米微胶囊的渗透性能  

Penetrating Properties of Thermo-Sensitive Organic-Inorganic Hybrid Nanocapsules

作　　者：卢琴芳[1,2] 尚玥[1] 单国荣[1] 

机构地区：[1]浙江大学化工系,化学工程联合国家重点实验室,浙江杭州310027 [2]九江学院化学化工学院,江西九江332005

出　　处：《化学反应工程与工艺》2010年第1期69-73,共5页Chemical Reaction Engineering and Technology

基　　金：教育部新世纪优秀人才支持计划项目(NCET-05-0512)

摘　　要：将N-异丙基丙烯酰胺引入以正十六烷为模板的苯乙烯与甲基丙烯酸-3-三甲氧基硅丙酯细乳液共聚法制备纳米微胶囊的体系,得到一种温敏型有机-无机杂化纳米微胶囊。采用紫外可见分光光度计研究该种微胶囊在临界温度附近对甲酚红的载入和释放行为。结果表明N-异丙基丙烯酰胺的引入和温度均影响纳米微胶囊对甲酚红的载入与释放。微胶囊在临界温度以上具有一定渗透速率,临界温度以下渗透不明显,能较好地实现"开-关"式环境温敏型控制吸附和释放。A thermo-sensitive organic-inorganic hybrid nanocapsule was synthesized by miniemulsion polymerization through introducing the comonomer N-isopropyl acrylamide （NIPAM） to the copolymerization of styrene and 3-trimethoxysilyl propyl methacrylate （MPS） on the well dispersed hexodecane droplet templates. The cresol red loading and releasing process in the capsule nearby the lower critical solution temperature （LCST） was studied with ultraviolet-spectrophotometer. It was indicated that both the introduction of comonomer NIPAM and the temperature affected the cresol red loading and releasing process in the capsule, a penetrate rate was received at temperatures above the LCST and nearly no penetrate rate was received at temperatures below the LCST. The experimental results showed that the organic-inorganic hybrid nanocapsules were featured with thermoresponsiveness due to the thermo-responsive swollen-shrunken property.

关 键 词：温敏性 有机-无机杂化 纳米微胶囊 渗透性 

分 类 号：TQ314.2[化学工程—高聚物工业]