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Interfacial structure and chemistry in a ceramic/polymer composite material

Published online by Cambridge University Press:  31 January 2011

Oludele O. Popoola
Affiliation:
Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 105 South Goodwin Avenue, Urbana, Illinois 61801
Waltraud M. Kriven
Affiliation:
Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 105 South Goodwin Avenue, Urbana, Illinois 61801
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Abstract

The microstructure and microchemistry of ceramic/polymer interfaces in a calcium aluminate/polyvinyl alcohol composite material have been studied using transmission electron microscopy (TEM), high resolution electron microscopy (HREM), x-ray photoelectron spectroscopy (XPS), and energy dispersive spectroscopy (EDS). Interfaces consisted of an amorphous interphase layer, inside of which were dispersed metastably retained CaAl2O5 · 8H2O crystallites. The amorphous phase was a mixture of the hydration products of calcium aluminate and aluminum–crosslinked, polyvinyl alcohol. The crystalline hydration product CaAl2O5 · 8H2O was metastably retained due to polymer poisoning of nucleation sites and significant reduction of conversion kinetics.

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Copyright
Copyright © Materials Research Society 1992

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