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Rheology pp 413-418 | Cite as

The Elongational Behaviour of Various Polymer Melts

  • Helmut Münstedt

Abstract

It has been shown for a low density polyethylene 1,2,3,4 and some polystyrenes 5,6 that the elongational behaviour of their melts is remarkably different from the shear properties in the nonlinear range of deformation. Having a reliable experimental method for measuring the elongational behaviour of polymer melts in hand now5 which uses only a small amount of material, it seems challenging to investigate the influence of the molecular structure on the elongational properties in order to obtain a more thorough understanding of the flow behaviour of polymer melts. From experiments in shear it is well-known how decisively the flow behaviour of a polymer melt is influenced by the molecular weight and the molecular weight distribution.

Keywords

Molecular Weight Distribution Elongational Viscosity Weight Average Molecular Weight Recoverable Strain High Molecular Weight Component 
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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Copyright information

© Springer Science+Business Media New York 1980

Authors and Affiliations

  • Helmut Münstedt
    • 1
  1. 1.Mess- und PrüflaboratoriumBASF AktiengesellschaftLudwigshafen/RheinGermany

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