Optimization of the Conditions of Acid Hydrolysis of Tetraethoxysilane and Identification of Primary Products of Sol-Gel Synthesis

摘要

The effect of the reactant ratio in the Si(OEt)4-H2O-EtOH-HCl system on the hydrolytic poly-condensation of tetraethoxysilane and gelation rate was examined. A mass-spectrometric study showed that the primary products of the sol-gel process are linear and cyclic oligosiloxanes containing hydroxy and ethoxy groups at the silicon atoms.