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Spinnability of Silica Sols: the Role of Alkoxy Group Exchange
Published online by Cambridge University Press: 21 February 2011
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.
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- Copyright © Materials Research Society 1998
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