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Measurement of the loss tangent of low-density polyethylene with a nanoindentation technique

Published online by Cambridge University Press:  31 January 2011

J. L. Loubet ,
W. C. Oliver  and
B. N. Lucas
J. L. Loubet
Affiliation:
Ecole Central de Lyon, Laboratoire de Tribologie et Dynamique des Systemes, Centre National de la Recherche Scientifique, BP 163, F-69131 Ecully Cedex, France
W. C. Oliver
Affiliation:
MTS Systems Corporation, Nano Instruments Innovation Center, 1001 Larson Drive, Oak Ridge, Tennessee 37830
B. N. Lucas
Affiliation:
MTS Systems Corporation, Nano Instruments Innovation Center, 1001 Larson Drive, Oak Ridge, Tennessee 37830
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Abstract

This paper describes experimental measurements of the linear viscoelastic behavior of the surface of low-density (LD) polyethylene in contact with a pyramidal Berkovich diamond indenter. The experiments were carried out at two different temperatures, 15.9 and 27.2 °C, between frequencies of 0.1 and 800 Hz. Using the shift of the loss tangent between the two temperatures at frequencies lower than 20 Hz and an Arrhenius equation, an activation energy of 105 ± 2 kJ/mol was obtained. This value is in good agreement with the bulk value of the a relaxation of LD polyethylene reported in the literature.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 5 , May 2000 , pp. 1195 - 1198
Copyright
Copyright © Materials Research Society 2000

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