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Nano-Scale Viscoelastic Properties of Polymer Materials

Published online by Cambridge University Press:  10 February 2011

S. A. Syed Asif  and
J. B. Pethica
S. A. Syed Asif
Affiliation:
Department of materials, University of Oxford, Parks road, Oxford OXI 3PH, UK.
J. B. Pethica
Affiliation:
Department of materials, University of Oxford, Parks road, Oxford OXI 3PH, UK.
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Abstract

The AC force modulation technique in nano indentation has been extended to study the dynamic viscoelastic properties of polymer materials. The frequency and temperature dependent loss and storage modulus, the time-temperature superposition, the mechanical relaxation and the activation energy for the relaxation process can all be directly measured from nano scale contact. The results obtained for PMMA and Polyisoprene are in good agreement with the reported literature results obtained from conventional dynamic testing. The technique is likely to be of particular value for polymer thin films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 505 , 1997 , 103
Copyright
Copyright © Materials Research Society 1998

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References

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