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Journal of Materials Science

, Volume 25, Issue 2, pp 957–960 | Cite as

Viscoelastic properties of glass-forming polymers

  • T. S. Chow
Papers

Abstract

The effects of time, temperature, physical ageing, and non-linear stresses on the viscoelastic properties of glass-forming polymers are analysed by using our molecular theory of glasses. The drastic slowing down of the relaxation processes from the liquid state to the glassy state can be explained in terms of the temperature-dependent physical ageing rate. We find that the loss tangent decreases with ageing time whose effect, however, diminishes at longer loading times. In the non-linear viscoelastic range, the theory also predicts that the stress relaxes faster in shear than in tension.

Keywords

Ageing Time Loss Tangent PVAc Glassy State Physical Ageing 
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Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • T. S. Chow
    • 1
  1. 1.Xerox CorporationWebster Research CenterWebsterUSA

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