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Molecular Building Blocks in Low PH Silicon Sol-Gels: A Silicon-29 NMR Study

Published online by Cambridge University Press:  25 February 2011

Larry W. Kelts  and
Nancy J. Armstrong
Larry W. Kelts
Affiliation:
Corporate Research Laboratories, Eastman Kodak Company, Rochester, NY 14650
Nancy J. Armstrong
Affiliation:
Corporate Research Laboratories, Eastman Kodak Company, Rochester, NY 14650
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Abstract

High field Silicon-29 NMR is used to study the structural intermediates in tetramethyl and tetraethyl orthosilicate (TMOS and TEOS) low pH sol-gel reactions. Linear oligomers as well as ring components of various sizes are identified and their evolution in the sols is followed. Differences in the number of compact ring structures are related to differences in gel times. Reactions are followed for various silicon alkoxide:water:acid molar ratios.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988 , 519
Copyright
Copyright © Materials Research Society 1988

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References

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