Dynamics of concentrated polymer systems. Part 3.—The constitutive equation

Authors:
  • MDMasao Doi
    Masao Doi
  • SES. F. Edwards
    S. F. Edwards
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Abstract
The rheological constitutive equation of a condensed polymer system is presented based on the primitive chain model presented in Parts 1 and 2. The constitutive equation has the form of a BKZ equation and gives an explicit form for the memory kernel with the dependence of the rheological parameters on molecular weight and concentration. An interesting point is that it predicts a stress superposition law in the regime of non-linear viscoelasticity. The general features agree with experiments fairly well.