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From Minierals to Materlals: A Facile Synthetic Route to Preceraic Polymers for Aluminum Oxide

Published online by Cambridge University Press:  25 February 2011

Allen W. Apblett ,
Christopher C. Landry ,
Mark R. Mason  and
Andrew R. Barron
Allen W. Apblett
Affiliation:
Department of Chemistry and Materials Research Laboratory, Harvard University, Cambridge, Massachusetts 02138
Christopher C. Landry
Affiliation:
Department of Chemistry and Materials Research Laboratory, Harvard University, Cambridge, Massachusetts 02138
Mark R. Mason
Affiliation:
Department of Chemistry and Materials Research Laboratory, Harvard University, Cambridge, Massachusetts 02138
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Abstract

Reaction of boehmite, [AI(O)(OH)]n, with an excess of carboxylic acid (HO2CR) results in the formation of the carboxy substituted alumoxanes, [AI(O)x(OH)y(O2CR)z)]n where 2x + y + z = 3 and R = alkyl substituents. The alumoxanes have been fully characterized by SEM, elemental analysis, IR and multinuclear NMR spectroscopy. The physical properties of the alumoxanes are highly dependent on the identity of R, and range from insoluble crystalline powders, e.g. R = CH3, to powders which readily form solutions or gels in hydrocarbon solvents, e.g. R = C5H11. All of the alumoxanes decompose under mild thermolysis to yield γ-alumina.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 75
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

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