Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-25T15:39:22.989Z Has data issue: false hasContentIssue false
  • English
  • Français

NMR Characterization of Precursors to Chemically Derived Ceramics

Published online by Cambridge University Press:  25 February 2011

John D. Basil  and
Chia-Cheng Lin
John D. Basil
Affiliation:
PPG Industries, Inc., Glass Research and Development, P.O. Box 11472, Pittsburgh, PA, 15238
Chia-Cheng Lin
Affiliation:
PPG Industries, Inc., Glass Research and Development, P.O. Box 11472, Pittsburgh, PA, 15238
Get access

Extract

High resolution 29Si NMR spectroscopy has been used to study the hydrolysis and condensation reactions of TEOS and related silicon alkoxides under a range of conditions selected to model initial steps in the formation of ceramic precursors. Kinetic results have led to a detailed description of the role of various reaction parameters and to differences in reactivity of various polyethoxysiloxanes. Reactivity studies have provided insight into the processes that form multicomponent alkoxide/oxide materials. Titanium alkoxides in particular can act as catalysts for silanol condensation in addition to forming Si-O-Ti linkages, and the former role may predominate in certain systems.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988 , 49
Copyright
Copyright © Materials Research Society 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Pouxviel, J. C. and Boilot, J. P., J. Non-Cryst Solids 94, 1987, 374–386, and references therein.CrossRefGoogle Scholar
2. Assink, R. A. and Kay, B. D., J. Non-Cryst Solids 99, 1988, 359–370, and references therein.CrossRefGoogle Scholar
3. Lin, C.-C. and Basil, J. D., Mat. Res. Soc. Symp. Proc. Vol 73, Better Ceramics Through Chemistry II, Brinker, C.J., Ulrich, D.R., Clark, D. E., ed (Elsevier, Amsterdam, 1986, p.585).Google Scholar
4. Basil, J. D. and Lin, C. C. in “Ultrastructure Processing of Ceramics, Glasses and Composites”, Mackenzie, J. D. and Ulrich, D.R., eds, John Wiley & Sons, 1988.Google Scholar
5. Andrianov, K., Organic Silicon Compounds, State Scientific Technical Publishing House for Chemical Literature, Moscow, 1955.Google Scholar
6. Bradley, D. C., Mehrotra, R. C., Gaur, D. P., “Metal Alkoxides”, Academic Press, 1978, p. 176.Google Scholar