The Effect of Molecular Weight Distribution on the Elongational Properties of Polymers

  • G. Marin
  • Y. Lanfray


The transient properties of a large number of linear polymers in uniaxial elongational flows have been studied in a wide range of molecular weights and polydispersity indexes. The transient stress-strain curve at a given elongational rate may be related to the molecular weight distribution through a Wagner-like constitutive equation using as a kernel the memory function of linear viscoelasticity. The model allows to derive within experimental uncertainties the elongational properties of linear polymers from their molecular parameters at low and moderate rates of strain.


Molecular Weight Distribution Viscoelastic Property Linear Polymer Linear Viscoelasticity Commercial Polymer 
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Copyright information

© Elsevier Science Publishers Ltd 1990

Authors and Affiliations

  • G. Marin
    • 1
  • Y. Lanfray
    • 1
  1. 1.Laboratoire de Physique des Matériaux Industriels Université de Pau et des Pays de l’Adour CentreUniversitaire de Recherche Scientifique Avenue de l’UniversitéPauFrance

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