Preparation and Performance of Functional Hybrid Materials Based on Sol-Gel Process
Qian Junmin¹,Xi Xifeng²,Li Xuxiang²
(1.School of Material Science and Engineering,Xi'an Jiaotong University,Xi'an 710049, China;2.School of Environmental and Chemical Engineering,Xi'an Jiaotong University)

Abstract: A new type of organic/inorganic hybrid materials was prepared by solgel process through the hydrolysis and polycondensation of tetramethoxy-silicane (TMOS) and gamma-amin-opropylmethyldimethoxy silane (APMDMOS) as precursors. The effects of reaction system’s pH, reaction temperature, the volume ratio of water to precursors, and TMOS content on the gelation time and optical property of the hybrid materials were investigated in detail. The forma-tion of silica gel materials and the hybrid materials has been confirmed by Fourier transform infrared. The results show that the gelation time and visible light transmittance of the above-mentioned systems decrease as the TMOS content, reaction temperature and the density of precursors increase. The visible light transmittance and the gelation time of the systems exhibit a maximum value as pH increases.
Keywords: organic/inorganic hybrid materials;sol-gel process;gelation time;optical property