摘要
以正辛烷为模板,将N-异丙基丙烯酰胺(NIPAM)引入苯乙烯(St)/γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)的细乳液共聚体系,制备了温敏型有机-无机杂化纳米微胶囊。通过红外(FT-IR)、透射电镜(TEM),激光粒径分析仪(DLS)表征了纳米微胶囊的结构和形态;采用紫外可见分光光度计(UV)研究了纳米微胶囊在临界温度附近对甲酚红的载入行为,考察了NIPAM用量对纳米微胶囊渗透性的影响。结果表明,当NIPAM用量为0.4g时,制得的纳米微胶囊的形貌完整、粒径均一、分散性较好,平均粒径为167nm,胶囊壁厚为24nm。纳米微胶囊的渗透性随着NIPAM用量的增加而增强。
A thermo-sensitive organic-inorganic hybrid nanocapsules were synthesized using octane as template through introducing the comonomer N-isopropylacrylamide （NIPAM） into the miniemulsion copolymerization of styrene（St） and 7-methacryloxypropyl trimethoxy silane（KH-570）. The structure and morphology of nanocapsules were characterized by Fourier transform infrared spectra（FT-IR）, transmission electron microscope （TEM） and dynamic light scattering （DLS）. The cresol red loading process in the nanocapsules nearby the lower critical solution temperature（LCST） was studied by ultraviolet-spectrophotometer. The influence of the amount of NIPAM on the penetrative property of nanocapsules was investigated. The results show that the complete morphology, uniform and monodisperse nanocapsules are obtained when the amount of NIPAM is 0.4g. The average diameter and sletl thickness of nanocapsules are 167nm and 24nm respectively. The penetrative properties of nanocapsules are enhanced obviously with increasing of NIPAM amount.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第7期148-151,共4页
Polymer Materials Science & Engineering
基金
安徽省自然科学基金资助项目(1208085QB38)
安徽大学博士科研启动经费资助项目
安徽大学"211工程"三期建设学术创新团队经费资助项目
