Rheology pp 331-335 | Cite as

Irreversible Thermodynamics of Glassy Polymers

  • K. C. Valanis
  • S. T. J. Peng


In a previous paper1 we laid the physical foundations for the atomic and molecular interpretations of the “internal variables” in theories of irreversible thermodynamics. This we did using the concepts of “deformation kinetics” as a point of departure. The results were two-fold:
  1. (i)

    Non-linear equations of evolution of internal variables were established.

  2. (ii)

    Phenomenological parameters were given an atomic or molecular identity.



Internal Variable Glassy Polymer Irreversible Thermodynamic Thermal Creep Duhem Inequality 


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  1. 1.
    K. C. Valanis and S. J. Lalwani, J. Chem. Phys. 67, 3980 (1977).ADSCrossRefGoogle Scholar
  2. 2.
    K. C. Valanis Arch. Mech. Stosowanej, 23, 535, (1975).Google Scholar
  3. 3.
    A. J. Kovacs, Fortsch. Hochpolym. Forsch. (Ad. in Polymer Sci.) 3, 394 (1963).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • K. C. Valanis
    • 1
  • S. T. J. Peng
    • 2
  1. 1.University of CincinnatiCincinnatiUSA
  2. 2.Jet Propulsion LaboratoryCalifornia Institute of technologyPasadenaUSA

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