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Siloxane Modified Sio2-TiO2 Glasses Via Sol-Gel

Published online by Cambridge University Press:  28 February 2011

C. S. Parkhurst ,
W. F. Doyle ,
L. A. Silverman ,
S. Singh ,
M. P. Andersen ,
D. McClurg ,
G. E. Wnek  and
D. R. Uhlmann
C. S. Parkhurst
Affiliation:
Department of Materials Science and Engineering, M.I.T., Cambridge, Mass. 02139
W. F. Doyle
Affiliation:
Department of Materials Science and Engineering, M.I.T., Cambridge, Mass. 02139
L. A. Silverman
Affiliation:
Department of Materials Science and Engineering, M.I.T., Cambridge, Mass. 02139
S. Singh
Affiliation:
Department of Materials Science and Engineering, M.I.T., Cambridge, Mass. 02139
M. P. Andersen
Affiliation:
Department of Materials Science and Engineering, M.I.T., Cambridge, Mass. 02139
D. McClurg
Affiliation:
Department of Materials Science and Engineering, M.I.T., Cambridge, Mass. 02139
G. E. Wnek
Affiliation:
Department of Materials Science and Engineering, M.I.T., Cambridge, Mass. 02139
D. R. Uhlmann
Affiliation:
Department of Materials Science and Engineering, M.I.T., Cambridge, Mass. 02139
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Abstract

Polydimethylsiloxane [PDMS]-modified SiO2-TiO2, glasses have been prepared via the sol-gel route. Polymer compositions varied between 17 and 67 wt% PDMS, using PDMS of molecular weights 1,700 and 36,000. Also varied was the Si/Ti ratio for a given polymer content and the nature of the Ti alkoxide.A general synthetic procedure was found which made optically clear samples. Dense monolithic structures were obtained at room temperature for all compositions. The room temperature densification is attributed to relaxation and flow in the sample due to the presence of the polymer. The effects on properties of the overall composition and molecular weight of the polymer are reported, and implications in terms of structural models are considered.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 769
Copyright
Copyright © Materials Research Society 1986

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References

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