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Electrical and mechanical property transitions in carbon-filled poly(vinylpyrrolidone)

Published online by Cambridge University Press:  31 January 2011

Jaime C. Grunlan ,
William W. Gerberich  and
Lorraine F. Francis
Jaime C. Grunlan
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
William W. Gerberich
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
Lorraine F. Francis
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
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Abstract

The effect of carbon black content on the mechanical and electrical properties of carbon-black-filled poly(vinylpyrrolidone) composites was determined. Experimental data show a drop in modulus when the volume of carbon black exceeds 25%, coincident with pore formation documented by scanning electron microscopy. This behavior is consistent with surpassing the critical pigment volume concentration. Electrical conductivity, however, does not show a discontinuous change in behavior at 25 vol% carbon black and continues to increase through a carbon black loading of 35 vol%. A qualitative model of microstructural evolution is presented to explain the observed differences in electrical and mechanical behavior.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 14 , Issue 11 , November 1999 , pp. 4132 - 4135
Copyright
Copyright © Materials Research Society 1999

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References

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