Phys. Rev. Lett. 75, 2698–2701 (1995)Stick-Slip Transition at Polymer Melt/Solid InterfacesReceived 24 April 1995; revised 10 July 1995; published in the issue dated 2 October 1995 A striking superfluidlike stick-slip transition is studied and semiquantitatively analyzed for a series of highly entangled linear polyethylene melts subjected to capillary flow. The observed violation of the law of the stick hydrodynamic boundary condition is significant and unambiguous, and can be conveniently characterized by an extrapolation length b. It is shown that b at the transition is independent of temperature and sharply increases with molecular weight in confirmation with a simple scaling relation introduced by de Gennes. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.75.2698
DOI:
10.1103/PhysRevLett.75.2698
PACS:
61.41.+e, 47.20.Ft, 47.50.+d, 68.45.Nj
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