Hostname: page-component-7b7567c8c-jswmv Total loading time: 0 Render date: 2026-11-15T14:03:05.917Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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.

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

1. Wolf, K. and Praetorius, M., Metallbourse 18, 453 (1928).Google Scholar
2. Tohge, N., Moore, G.S. and Mackenzie, J.D., J. Non. Cryst. Solids 63, 95 (1984).Google Scholar
3. Edwards, J.O. and Ross, V., J. Inorg. Nucl. Chem. 15, 329 (1960).CrossRefGoogle Scholar
4. Krogh-Moe, J., Phys. Chem. Glasses 6, 46 (1965).Google Scholar
5. Silver, A.H. and Bray, P.J., J. Chem. Phys. 29, 984 (1958).Google Scholar
6. Svanson, S.E., Forslind, E. and Krogh-Moe, J., J. Phys. Chem. 66, 174 (1962).CrossRefGoogle Scholar
7. Weinberg, M.C., Neilson, G.F., Smith, G.L., Dunn, B., Moore, G.S. and Mackenzie, J.D., J. Mat. Sci. 20 1501 (1985).Google Scholar
8. Brinker, C.J., Ward, K.J., Keefer, K.D., Holupka, E., Bray, P.J. and Pearson, R.K., Aerogels, edited by Fricke, J. (Springer Verlag, Berlin, 1986).Google Scholar
9. Haaland, D. M., Easterling, R. G., and Vopicko, D. A., J. Appl. Spectroscopy, 39, 73 (1985).Google Scholar
10. Kustin, K. and Pizer, Richard, J. Am. Chem. Soc. 91–2, 317 (1969).CrossRefGoogle Scholar
11. Ross, S.D., The Infrared Spectra of Minerals, edited by Farmer, V.C. (The Mineralogical Society, London, 1974).Google Scholar
12. Bunker, B.C., this proceedings.Google Scholar