The effect of the reactant ratio in the Si(OEt)4-H2O-EtOH-HCl system on the hydrolytic polycondensation 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.
Russian Journal of Applied Chemistry – Springer Journals
Published: May 23, 2008
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