Study On Preparation Of Silica Microsphere Composite Fiber

In recent years, superhydrophobic surfaces which were prepared by micro-nano hierarchical structure have attracted considerable interest. In this paper we invent one method that we use sillca microspheres to build a fiber which is based on dual-scale hierarchical structure. The superhydrophobic surfaces have been formed by fluorosilanes(FAS). There are four main parts:Firstly, utilizing uniform monodisperse polystyrene microspheres, CdTe quantum dots and tetraethyl orthosilicate(TEOS) to prepare rasberry-like fluorescent silica microspheres, after depositing and modifying by fluorosilanes, fluorescent superhydrophobic materials can be obtained. The fluorescent silica microspheres dispersed in poly(vinyl alcohol)(PVA) solution. Then, by electrospinning ultrafine silica microsphere fluorescence/PVA composite fibers can be obtained.Secondly, the monodisperse silica microspheres were synthesised. The deposition process consisted of immersing the silica fiber repetitively into different silica microspheres solutions to form dual-scale hierarchical structures of silica microspheres/silica fiber composite fibers. The superhydrophobic surfaces were synthesized by composite fibers with further funtionalized in a fluoroalkylsilane solution.Thirdly, composite silica microspheres/polyacrylonitrile(PAN) composite fibers, formed by wet spinning the silica microspheres/PAN dimethyl sulfoxide solution, were calcined in air to get silica fibrous. The superhydrophobic surfaces were synthesized by composite fibers with further funtionalized in a fluoroalkylsilane solution.Finally, composite silica microspheres/PVA composite fibers, formed by electrospinning the silica microspheres/PVA water solution, were calcined in air to get silica fibrous. The superhydrophobic surfaces were synthesized by composite fibers with further funtionalized in a fluoroalkylsilane solution.