Determination of internal energy contribution to the thermoelasticity of natural rubber during compression by use of a thermomechanical analyzer

Authors

  • Chiu-Hsiung Hwo,

    1. Department of Chemical Engineering and Chemistry and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06268
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  • James P. Bell,

    1. Department of Chemical Engineering and Chemistry and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06268
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  • Julian F. Johnson

    1. Department of Chemical Engineering and Chemistry and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06268
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Abstract

A method for measuring the internal energy change of elastomers under compression is demonstrated using a conventional thermomechanical analyzer. The method is rapid and convenient and has a major advantage in that only a very small sample is required. Results are reported for natural rubber cured with two different crosslinking agents. The results are compared with previous work on similar materials in tension and torsion.

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