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Alkynyl Substituted Carboranes as Precursors to Boron Carbide Thin Films, Fibers and Composites

Published online by Cambridge University Press:  25 February 2011

Stephen E. Johnson ,
Xiaoguang Yang ,
M. F. Hawthorne ,
Kevin J. Thorne ,
Haixing Zheng  and
John D. Mackenzie
Stephen E. Johnson
Affiliation:
UCLA Department of Chemistry and Biochemistry, Los Angeles, CA, 90024.
Xiaoguang Yang
Affiliation:
UCLA Department of Chemistry and Biochemistry, Los Angeles, CA, 90024.
M. F. Hawthorne
Affiliation:
UCLA Department of Chemistry and Biochemistry, Los Angeles, CA, 90024.
Kevin J. Thorne
Affiliation:
UCLA Materials Science and Engineering Department, Los Angeles, CA, 90024.
Haixing Zheng
Affiliation:
UCLA Materials Science and Engineering Department, Los Angeles, CA, 90024.
John D. Mackenzie
Affiliation:
UCLA Department of Chemistry and Biochemistry, Los Angeles, CA, 90024.
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Abstract

The use of alkynyl substituted derivatives of o-carborane as precursors to boron containing ceramics is described. These compounds undergo a thermally or photochemically induced polymerization to afford cross linked polyakynyl-o-carborane derivatives. The increase in molecular weight should allow for increased Tg's and the retention of modelled polymer preforms. In this report, these modification reactions are described. In addition, the retention of molded polymer preforms were analyzed after UV exposure and inert atmosphere pyrolysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 833
Copyright
Copyright © Materials Research Society 1992

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References

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