TY - JOUR
T1 - Viscoelasticity of dilute solutions of semiflexible polymers
AU - Pasquali, Matteo
AU - Shankar, V.
AU - Morse, David C.
PY - 2001/8
Y1 - 2001/8
N2 - We show using Brownian dynamics simulations and theory how the shear relaxation modulus of dilute solutions of relatively stiff semiflexible polymers differs qualitatively from that of rigid rods. For chains shorter than their persistence length, exhibits three time regimes: At very early times, when the longitudinal deformation is affine, Over a broad intermediate regime, during which the chain length relaxes, At long times, mimics that of rigid rods. A model of the polymer as an effectively extensible rod with a frequency dependent elastic modulus quantitatively describes throughout the first two regimes.
AB - We show using Brownian dynamics simulations and theory how the shear relaxation modulus of dilute solutions of relatively stiff semiflexible polymers differs qualitatively from that of rigid rods. For chains shorter than their persistence length, exhibits three time regimes: At very early times, when the longitudinal deformation is affine, Over a broad intermediate regime, during which the chain length relaxes, At long times, mimics that of rigid rods. A model of the polymer as an effectively extensible rod with a frequency dependent elastic modulus quantitatively describes throughout the first two regimes.
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U2 - 10.1103/PhysRevE.64.020802
DO - 10.1103/PhysRevE.64.020802
M3 - Article
AN - SCOPUS:4244095503
SN - 1539-3755
VL - 64
SP - 208021
EP - 208024
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 2
M1 - 020802
ER -