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Branching Theory in Sol-Gel Processing

Published online by Cambridge University Press:  25 February 2011

Nikolaos A. Peppas,
Alec B. Scranton,
Andy H. Tsou and
Dawn E. Edwards
Nikolaos A. Peppas
Affiliation:
School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907.
Alec B. Scranton
Affiliation:
School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907.
Andy H. Tsou
Affiliation:
School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907.
Dawn E. Edwards
Affiliation:
School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907.
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Abstract

The complex sequence of the hydrolysis/polymerization reaction of certain types of alkoxysilanes is modelled using a novel approach based on the branching theory. Network formation is described, resulting from the reaction of multifunctional oligomers. Expressions are derived for the critical silane conversion at the gel point, the molecular weight, and changes in the sol and gel fractions as a function of time.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988, 43
Copyright
Copyright © Materials Research Society 1988

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References

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