摘要
采用溶胶—凝胶法制备出单分散性好、粒径均一（直径约为90～100 nm）有规则孔道的介孔二氧化硅纳米粒子（Mesoporous silica nanoparticles,MSN）。利用硅烷偶联剂（MPS）对MSN进行表面改性,使其表面带有氨基,同时,将α-甲基丙烯酸（MAA）聚合为PMAA后采用原位聚合法聚集在MSN的表面,得到MSN/PMAA核壳材料。采用透射电镜（TEM）、红外光谱（IR）、X射线衍射（XRD）对样品MSN/PMAA核/壳材料进行性质表征。结果表明：所制备的介孔二氧化硅纳米粒子具有规则的孔道,并且聚合物PMAA成功包覆在了介孔二氧化硅纳米粒子的表面。
Mesoporous silica nanoparticles （MSN） with good monodispersion, uniform particle size （diameter of about 90～100 nm） and regular channels have been prepared by sol-gel method. The surface of MSN was modified by Silane coupling agent （MPS） to make its surface possess the amino-group. At the same time, polyme PMAA was polymerized by rα-methacrylic acid （MAA） gathered in MSN＇s surface through the facile in situ polymerization method. The morphology, uniformity and structural properties of MSN/PMAA core shell composite were characterized and analyzed by transmission electron microscopy （TEM）, infrared spectroscopy （IR） and X-ray diffraction （XRD）. The results showed that MSN have regular channels, and polymer PMMA have successfully coated on the surface of MSN.
出处
《广东化工》
CAS
2015年第6期13-14,5,共3页
Guangdong Chemical Industry
基金
国家自然科学基金(No.21003074)
江苏省自然科学基金(No.BK20131407)
关键词
介孔二氧化硅
表面改性
PMAA
mesoporous silica nanoparticle
surface modification
PMAA
