Abstract
The behavior of three preceramic polysilazane variations during pyrolysis is discussed. These polymers consist of the monomelic units –[H2SiNCH3]-, -[CH3SiHNH]-, and -[H2SiNCH2CH3]-. Their differing pyrolytic performances are evaluated in relation to polymer structure, functional group, and pyrolytic environment.
The thermal reactivity of the different organic groups and their position on the polymer backbone drastically affect the development of the carbonaceous species in the derived ceramic products. The bonding of hydrogen groups to the polymer’s skeleton leads to different chemical configurations in the amorphous products.
Pyrolysis in ammonia results in the elimination of the carbon content regardless of the type and bonding of the polymer’s organic groups. Different chemical mechanisms are responsible for this phenomenon. The carbon removal occurs before the conversion of the organic moieties to inorganic species.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Y. Blum, K. B. Schwartz, and R. M. Laine, J. Mater. Sci. 24, 1707 (1989).
G. T. Burns, T. P. Angelotti, L. F. Hanneman, G. Chandra, and J. A. Moore, J. Mater. Sci. 22, 2609 (1987).
K. A. Youngdahl, R. M. Laine, R. A. Kennish, T. R. Cronin, and G. A. Balavoine, in Better Ceramics Through Chemistry III, C. J. Brinker, D. E. Clark, and D. R. Ulrich Eds., MRS spring meeting proceedings 121, 489 (1988).
G. T. Burns and M. G. Chandra, J. Am. Ceram. Soc. 72, 333 (1989).
K. J. Wynne and R. W. Rice, Annu. Rev. Mater. Sci. 14, 297 (1984).
R. M. Laine, Y. D. Blum, D. Tse, and R. Glaser, in Inorganic and Organometallic Polymers, M. Zeldin, K. J. Wynne, and H. R. Allcock, Eds., ACS Symposium Series 360, 124 (1988).
C. Biran, Y. D. Blum, R. M. Laine, R. Glaser, and D. Tse, J. Mol Cat., 48, 183–197 (1988).
W. Verbeek, U.S. Patent No. 3,853,567 (December 1974).
G. Winter, W. Verbeek, and M. Mansmann, U.S. Patent 3,892,583 (July 1975).
G. E. Legrow, T. F. Lim, J. Lipowitz, and R. S. Reaoch, in Better Ceramics Through Chemistry II, C. J. Brinker, D. E. Clark, and D. R. Ulrich, eds., Mater. Res. Soc. Symp. Proc., 73, 533 (1986).
J. P. Cannady, U.S. Patent No. 4,535,007 (August 1985).
J. P. Cannady, U.S. Patent No. 4,543,344 (September 1985).
D. Seyferth and G. H. Wiseman, U.S. Patent No. 4,482,669 (November 1984).
D. Seyferth, G. H. Wiseman, J. M. Schwark, Y. F. Yu, and C. A. Poutasse, in Inorganic and Organometallic Polymers, M. Zeldin, K. J. Wynne, and H. R. Allcock, eds., ACS Symposium. Series. 360, 143 (1988).
D. Seyferth and G. H. Wiseman, Commun. Am. Ceram. Soc. 67, C-132 (1984).
M. Arai, S. Sakuruda, T. Isoda, and T. Tomizawa, Am. Chem. Soc., Polymer Div. Preprints 27, 407 (1984).
M. Arai, T. Isoda, and O. Funayama, U.S. Patent No. 4,659,850 (April 1987).
Y. D. Blum, K. B. Schwartz, E. J. Crawford, and R. D. Hamlin in Better Ceramics Through Chemistry III edited by C. J. Brinker, D. E. Clark, and D. R. Ulrich, MRS spring meeting proceedings 121, 565 (1988).
K. Okamura, M. Sato, and Y. Hasegawa, Ceram. Int. 13, 55 (1987).
V. Bazant, V. Chvalousaky, and J. Rathousky, Organosilicon Compounds, (Academic Press, New York), pp. 82–83, (1965).
Y. D. Blum and R. M. Laine, Organometallics 5,2081 (1986).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1991 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Blum, Y.D., McDermott, G.A., Hirschon, A.S. (1991). Pyrolytic Characteristics of Polysilazanes. In: Harrod, J.F., Laine, R.M. (eds) Inorganic and Organometallic Oligomers and Polymers. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3214-5_12
Download citation
DOI: https://doi.org/10.1007/978-94-011-3214-5_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-5417-1
Online ISBN: 978-94-011-3214-5
eBook Packages: Springer Book Archive