化学双疏、窄分布的二氧化硅纳米颗粒的制备研究  

Preparation of Chemically Omniphobic Silica Nanoparticles with a Narrow Size Distribution

作　　者：顾晓龙[1] 张睿[1] 蒋建国[1] 

机构地区：[1]扬州职业大学,江苏扬州225009

出　　处：《扬州职业大学学报》2016年第2期39-42,共4页Journal of Yangzhou Polytechnic College

摘　　要：利用改进的Stober法制备平均粒径为350nm、分布均匀的二氧化硅纳米颗粒。利用氟代硅烷的硅烷化反应对纳米颗粒的表面进行氟化改性,使其表面能降低,达到利用化学成分而使表面疏水疏油的"双疏"效果。这种二氧化硅颗粒对极性和非极性溶剂都不浸润,可用于制备颗粒包裹石油醚的"粉状油"的结构。这种结构可以最大限度地包裹大量液体还能保持外观上的固态。Monodispersed silica nanoparticles with average diameter 350 nm are prepared using a modified Stober method. The particle surface is modified with a fluorinated silane to reduce its surface energy,leading to a chemically hydrophobic and lyophobic surface. Such particles are non-wetted by both oil and water,which can be used to prepare a ＂powdered oil＂structure with petroleum ether encapsulated by powders. This structure shows potential applications in cosmetics and drugs because it retains a solid appearance while containing a large amount of liquid.Monodispersed silica nanoparticles with average diameter 350 nm are prepared using a modified Stober method. The particle surface is modified with a fluorinated silane to reduce its surface energy,leading to a chemically hydrophobic and lyophobic surface. Such particles are non-wetted by both oil and water,which can be used to prepare a ＂powdered oil＂structure with petroleum ether encapsulated by powders. This structure shows potential applications in cosmetics and drugs because it retains a solid appearance while containing a large amount of liquid.

关 键 词：二氧化硅纳米颗粒 Stober法 双疏性表面 粉状油 

分 类 号：TB383.1[一般工业技术—材料科学与工程]