Tube Dynamics Works for Randomly Entangled Rings

Jian Qin, Scott T. Milner

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The tube model is the cornerstone of molecular theory for polymer rheology. We test its microscopic assumptions by simulating topologically equilibrated ring polymers, whose dynamics is free from end segment relaxation. We show that a closed-form expression derived from the tube model adapted to ring polymers quantitatively predicts the segmental mean squared displacements over the entire range of time scales from local motion to complete equilibration, with a time-independent local friction factor.

Original languageEnglish (US)
Article number068307
JournalPhysical review letters
Issue number6
StatePublished - Feb 12 2016

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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