Affordable Access

An intrinsic route to melt fracture in polymer extrusion: a weakly nonlinear subcritical instability of viscoelastic Poiseuille flow

Authors
  • Meulenbroek, M.
  • Storm, C.
  • Bertola, V.
  • Wagner, C.
  • Bonn, D.
  • van Saarloos, W.
Type
Preprint
Publication Date
Nov 21, 2002
Submission Date
Nov 21, 2002
Identifiers
arXiv ID: cond-mat/0211461
Source
arXiv
License
Unknown
External links

Abstract

As is well known, the extrusion rate of polymers from a cylindrical tube or slit (a ``die'') is in practice limited by the appearance of ``melt fracture'' instabilities which give rise to unwanted distortions or even fracture of the extrudate. We present the results of a weakly nonlinear analysis which gives evidence for an intrinsic generic route to melt fracture via a weakly nonlinear subcritical instability of viscoelastic Poiseuille flow. This instability and the onset of associated melt fracture phenomena appear at a fixed ratio of the elastic stresses to viscous stresses of the polymer solutionte

Report this publication

Statistics

Seen <100 times