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

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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.

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Authors and Affiliations

  1. Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota, 55455, USA

    Jaime C. Grunlan, William W. Gerberich & Lorraine F. Francis

Authors
  1. Jaime C. Grunlan
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  2. William W. Gerberich
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  3. Lorraine F. Francis
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Grunlan, J.C., Gerberich, W.W. & Francis, L.F. Electrical and mechanical property transitions in carbon-filled poly(vinylpyrrolidone). Journal of Materials Research 14, 4132–4135 (1999). https://doi.org/10.1557/JMR.1999.0557

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  • DOI: https://doi.org/10.1557/JMR.1999.0557

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