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Spinnability of Silica Sols: the Role of Alkoxy Group Exchange

Published online by Cambridge University Press:  21 February 2011

S. Prabakar ,
R.A. Assink  and
A.D. Irwin
S. Prabakar
Affiliation:
UNM/NSF Center for Micro-Engineered Ceramics, University of New Mexico, Albuquerque, NM 87106.
R.A. Assink
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185.
A.D. Irwin
Affiliation:
Butler University, Indianapolis, IN 46208.
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Abstract

The exchange and spinnability of several systems with the general form Si(OR)4 (where R = CH3, C2H5) in ethanol, propanol and butanol were investigated. We have followed the alkoxy group exchange, the hydrolysis and condensation reactions and the Q distributions of these systems using 29Si and 17O NMR. The observed differences in spinnability of the various sol-gel systems are attributed to the effect of the bulkiness of the alkoxy group on its reactivity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 433
Copyright
Copyright © Materials Research Society 1998

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References

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