Simulations of dynamics and viscoelasticity in highly entangled solutions of semiflexible rods.

Brownian dynamics simulations are used to study highly entangled solutions of semiflexible polymers. Bending fluctuations of semiflexible rods are significantly affected by entanglement only above a concentration c(**), where c(**) approximately 10(3)L(-3) for chains of length L similar to their persistence length. For c>c(**), the tube radius R(e) approaches a dependence R(e) proportional to c(-35) and the linear viscoelastic response develops an elastic plateau that is absent for c<c(**). Experiments on isotropic solutions of F-actin are shown to span concentrations near c(**) for which the predicted asymptotic scaling of the plateau modulus, G proportional to c(75), is not yet valid.

• Publication year

  2007

• Venue

  Physical review. E, Statistical, nonlinear, and soft matter physics

• Publication date

  2007-02-06

• Fields of study

  Medicine, Materials Science, Physics

• Identifiers
  DOI 10.1103/PhysRevE.76.010501arXiv cond-mat/0702149PMID 17677401
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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