Communication: Effects of stress on the tube confinement potential and dynamics of topologically entangled rod fluids

Daniel M. Sussman, Kenneth S. Schweizer

Research output: Contribution to journalArticlepeer-review

Abstract

A microscopic theory for the effect of applied stress on the transverse topological confinement potential and slow dynamics of heavily entangled rigid rods is presented. The confining entanglement force localizing a polymer in a tube is predicted to have a finite strength. As a consequence, three regimes of terminal relaxation behavior are predicted with increasing stress: accelerated reptation due to tube widening (dilation), relaxation via deformation-assisted activated transverse barrier hopping, and complete destruction of the lateral tube constraints corresponding to microscopic yielding or a disentanglement transition.

Original languageEnglish (US)
Article number131104
JournalJournal of Chemical Physics
Volume135
Issue number13
DOIs
StatePublished - Oct 7 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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