Abstract
A stable mixture of partially condensed polysilicates is formed from the substoichiometric, acid catalysed hydrolysis of tetramethoxysilane [Si(OCH3)4] and the removal of the reaction- generated methanol by distillation. This mixture has been used as a precursor to make silica aerogels that show microstructural differences from base catalysed TMOS aerogels. In this paper, we report the analysis of this mixture for a determination of the type and distribution of the polysilicate species formed, and we include measurements of some physical properties of this fluid.
Similar content being viewed by others
References
S.S. Kistler, Nature, 127, 741 (1931).
J. Fricke, Scientific American, 258(5), 92 (1988).
W.G. Klemperer and S.D. Ramamurthi, in Better Ceramics through Chemistry, edited by C.J. Brinker, D.E. Clark, and D.R. Ulrich, Mater. Res. Soc. Proc. 121, 1 (1988).
J.C. Pouxviel and J.P. Boilot, J. Non-Cryst. Solids, 89, 345 (1987).
C.W. Turner and K.J. Franklin, J. Non-Cryst. Solids, 91, 402, (1987)
L.W. Hrubesh, T.M. Tillotson, and J.F. Poco, this proceedings.
J.D. LeMay, R.W. Pekala, and L.W. Hrubesh, Pacific Polym. Preprints, 1, 295 (1989).
D. Neuhaus, J. Keeler and R. Freeman, J. Magnetic Resonance, 61, 553 (1985).
L.W. Kelts and N.J. Armstrong, J. Mater. Res., 4 (2), 423 (1989).
H.C. Marsmann, E. Meyer, M. Vongehr, E. Weber, Makromol. Chem., 184, 1817 (1983).
G. Engelhardt, H. Jancke, D. Hoebel and W. Wicker, Z. Chem., 14, 109 (1974).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tillotson, T.M., Hrubesh, L.W. Characterization Of Partially Condensed Silica Formed From The Partial Hydrolysis Of Tmos. MRS Online Proceedings Library 180, 309 (1990). https://doi.org/10.1557/PROC-180-309
Published:
DOI: https://doi.org/10.1557/PROC-180-309