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Physico-Chemical Characterization of Alumina Sols Prepared From Aluminum Alcoxides

Published online by Cambridge University Press:  28 February 2011

William L. Olson
William L. Olson*
Affiliation:
Signal Research Center, 50 E. Algonquin Rd., Des Plaines, IL 60017.
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Abstract

Alumina sols derived from aluminum sec-butoxide (Yoldas) were characterized. The distribution of the polymer sizes within the sol, determined by gel filtration chromatography (GFC), was found to be dramatically affected by small changes in the chemical processing or preparative procedure. Aging the sol at room temperature for two weeks produced no significant change in the GFC elution curves of the alumina sol. Sols with a “milky” appearance were found to exhibit a wider distribution of polymers by GFC than transparent sols. Rotary evaporation of the sol followed by redissolution of the residue was found to change the polymer size distribution described by the gel filtration elution curves. These observations coupled with 27Al NMR spectroscopy and viscometry measurements were used to elucidate the effects of process conditions and aging on the molecular structure of the sol.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 611
Copyright
Copyright © Materials Research Society 1986

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References

REFERENCES

1. Mackenzie, J. D., Proceedings of the International Conference on Ultrastructure Processing of Ceramics, Glasses, and Composites, pp. 15–25 (1984).Google Scholar
2. Uhlmann, D. R., Zelinski, B. J. J., and Wnek, G. E., Better Ceramics Through Chemistry, Mat. Res. Soc. Symp. Proc., 32, pp. 59–70 (1984).Google Scholar
3. Keefer, K.D., Better Ceramics Through Chemistry, Mat. Res. Soc. Symp. Proc., Vol.32, pp 15–24 (1984).Google Scholar
4. Yoldas, B. E., Am. Ceram. Soc. Bull. 54, 289 (1975).Google Scholar
5. Granath, K. A. and Kvist, B. E., J. Chromatog. L 8, 69 (1967).Google Scholar
6. Giddings, J. C. and Mallek, K. I., Anal. Chem. 38, 997 (1966).Google Scholar
7. Akitt, J. W. and Farthing, A., J. Chem. Soc. Dalton 1981, 1606.Google Scholar
8. Ohashi, S., Yoza, N., and Ueno, Y., J. Chromatog. 24, 300 (1966).CrossRefGoogle Scholar
9. Felter, S., Dirheimer, G., and Ebel, J. P., J. Chromatog. 35, 207 (1968).Google Scholar
10. Neddermeyer, P. A. and Rogers, L. B., Anal. Chem. 41, 94 (1969).Google Scholar
11. Streuli, C. A. and Rogers, L. B., Anal. Chem. 40, 653 (1968).Google Scholar
12. Tarutani, T., J. Chromatog. 50, 523 (1970).Google Scholar
13. Henry, R. A. and Rogers, L. B., Separation Sci. 3, 11 (1968).Google Scholar
14. Akitt, J. W. and Farthing, A., J. Chem. Soc. Dalton 1981, 1617.Google Scholar
15. Akitt, J. W. and Farthing, A., J. Chem. Soc. Dalton 1981, 1624.Google Scholar
16. Akitt, J. W., Greenwood, N. N., Khandelwal, B. L., and Lester, G. D., J. Chem. Soc. Dalton 1972, 604.Google Scholar
17. Akitt, J. W. and Farthing, A., J. Mag. Res. 32, 345 (1978).Google Scholar
18. Schonherr, V. S. and Frey, H. P., Anorg., Z. Allg. Chem. 452, 167 (1979).Google Scholar
19. Gessner, V. W., and Winzer, M., Anorg., Z. Allg. Chem. 452, 157 (1979).Google Scholar