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Polymer Growth and Gelation in Borate-Based Systems

Published online by Cambridge University Press:  28 February 2011

C. J. Brinker ,
K. J. Ward ,
K. D. Keefer ,
E. Holupka  and
P. J. Bray
C. J. Brinker
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
K. J. Ward
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
K. D. Keefer
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
E. Holupka
Affiliation:
Brown University, Providence, RI
P. J. Bray
Affiliation:
Brown University, Providence, RI
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Abstract

In situ FTIR, NMR and SAXS were used to investigate the synthesis and molecular structure of xLi2O-(1−x)B2O3 gels derived from tri-n-butyl borate (TBB) and lithium methoxide. In solution the fraction of tetrahedrally coordinated borons (N4) increases linearly with x, and a critical value of N4 must be exceeded in order to form gels. The primary criterion affecting gel formation is the kinetic stability of borate bonds toward molecules which are able to undergo dissociative chemisorption.

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Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 57
Copyright
Copyright © Materials Research Society 1986

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References

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