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Rheology pp 443-448 | Cite as

Double Step Strain and Relaxation of Polymer Melts

  • G. Marrucci
  • F. P. La Mantia
  • G. Spadaro
  • G. Titomanlio

Abstract

A possible description of the viscoelastic behaviour of polymer melts in the non-linear r’ange which has been recently considered makes use of stress equations of the form
$$ \mathop{\sigma }\limits_{ \sim } (t) = \int_{{ - \infty }}^{t} {\dot{\mu }(t - t')\mathop{Q}\limits_{{ \sim t}} } (t')dt' $$
(1)
where the tensor \( \mathop{Q}\limits_{{\sim t}} (t') \) is determined by the deformation occurred between t’ and t and the memory kernel \( \dot{\mu } \) is a function of time only.

Keywords

Stress Equation Enlargement Factor Memory Kernel Double Step Step Relaxation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    M. Doi and S. F. Edwards, Dynamics of Concentrated Polymer Systems, Parts 1, 2, 3, J.Chem.Soc.Faraday Trans.II, 74:1789, 1802, 1818 (1978)CrossRefGoogle Scholar
  2. 2.
    G. Marrucci and J. J. Hermans, Non-linear Viscoelasticity of Concentrated Polymeric Liquids, Macromolecules, in pressGoogle Scholar
  3. 3.
    L. J. Zapas and T. Craft, Correlation of Large Longitudinal Deformations with Different Strain Histories, J.Res.Nat. Bur.Stand., A 69:541 (1965)CrossRefGoogle Scholar
  4. 4.
    K. Osaki, Y. Einaga, M. Kurata, N. Yamada and M. Tamura, Stress Relaxation of Polymer Solutions under Large Strains: Application of Double-Step Strain, Polymer J., 5:283 (1973)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1980

Authors and Affiliations

  • G. Marrucci
    • 1
    • 2
  • F. P. La Mantia
    • 1
    • 2
  • G. Spadaro
    • 1
    • 2
  • G. Titomanlio
    • 1
    • 2
  1. 1.Istituto di Ingegneria Chimica, V.delle ScienzePalermoItaly
  2. 2.Istituto di Principi di Ingegneria ChimicaPiazzale TecchioNapoliItaly

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