TY - JOUR
T1 - Simulations of dynamics and viscoelasticity in highly entangled solutions of semiflexible rods
AU - Ramanathan, Shriram
AU - Morse, David C.
PY - 2007/7/6
Y1 - 2007/7/6
N2 - 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** ∼ 103 L-3 for chains of length L similar to their persistence length. For c> c**, the tube radius Re approaches a dependence Re c-3 5 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 c7 5, is not yet valid.
AB - 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** ∼ 103 L-3 for chains of length L similar to their persistence length. For c> c**, the tube radius Re approaches a dependence Re c-3 5 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 c7 5, is not yet valid.
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U2 - 10.1103/PhysRevE.76.010501
DO - 10.1103/PhysRevE.76.010501
M3 - Article
AN - SCOPUS:34547363829
SN - 1539-3755
VL - 76
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 1
M1 - 010501
ER -