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Solvent Quality Effects in Sol-Gel Processing

Published online by Cambridge University Press:  25 February 2011

Joseph K. Bailey
Joseph K. Bailey*
Affiliation:
Sandia National Laboratories, Ceramic Synthesis and Inorganic Chemistry Department, Albuquerque, NM 87185.
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Abstract

To understand how solvent quality can be used to tailor structure in sol-gel processing of silicon alkoxides, polymerized tetramethoxysilane polymers were synthesized and fractionated to give relatively stable, narrow molecular weight dispersion samples. These polymers had molecular weights ranging from 8000 to 45,000. The solubility parameter range for these polymers is 8.9–14.5 (cal/cm3)1/2. Light scattering confirmed that this range could be used to predict solvent quality. Bulk gels prepared using good versus poor solvents demonstrated that solvent quality can be used to tailor properties of the gels, presumably by modifying the extent of interpenetration of the growing polymers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 219
Copyright
Copyright © Materials Research Society 1992

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References

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