Synthesis and Characterization of Silica/Polystyrene/Polyaniline Core-shell Latexes

• Main Author: 陳嘉甫
• Other Authors: 邱文英
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/16745955944987454938

碩士 === 國立臺灣大學 === 化學工程學研究所 === 91 === This work is to prepare nanosized or submicron complex particles with silica as core and polymer as shell by using the method of emulsion polymerization. First, we prepared nanosized silica particles from the reaction of hydrolysis of tetraethoxysilane (TEOS) followed by a condensation reaction. After that﹐ the surface of silica particles are treated with the functional group C=C. On the surface of particles containing group of C=C, further polymerization reaction of styrene is carried out via the technique of emulsion polymerization. Polymers form over the surface of silica particles, thus the complex particles are of core-shell structure. A series of nanosized or submicron complex particles are prepared under different reaction conditions. The size distribution, morphology, and thermo-properties of the complex particles were tested and discussed. Moreover, we may introduce conductive polymers on the surface of the complex particles, such as polyaniline. Therefore the product can be used in many applications.