Experimental evidence for an intrinsic route to polymer melt fracture phenomena: A nonlinear instability of viscoelastic Poiseuille flow

V Bertola, B Meulenbroek, C Wagner, C Storm, A Morozov, W van Saarloos, D Bonn

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The production rate of polymer fibers by extrusion is usually limited by the appearance of a series of instabilities ("melt fracture") that lead to unwanted undulations of the surface. We present both qualitative and quantitative experimental evidence that-in addition to previously known polymer-specific scenarios-there is an intrinsic route towards melt fracture type phenomena: a nonlinear ("subcritical") instability of viscoelastic Poiseuille flow.

Original languageEnglish
Article number114502
Pages (from-to)-
Number of pages4
JournalPhysical Review Letters
Issue number11
Publication statusPublished - 21 Mar 2003

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