TY - JOUR
T1 - Microscopic theory of the tube confinement potential for liquids of topologically entangled rigid macromolecules
AU - Sussman, Daniel M.
AU - Schweizer, Kenneth S.
PY - 2011/8/10
Y1 - 2011/8/10
N2 - We formulate and apply a microscopic self-consistent theory for the dynamic transverse confinement field in solutions of zero-excluded-volume rods based solely on topological entanglements. In agreement with the phenomenological tube model, an infinitely deep potential is predicted. However, strong anharmonicities are found to qualitatively soften localization, in quantitative agreement with experiments on heavily entangled biopolymer solutions. Predictions are also made for the effect of rod alignment on the transverse diffusion constant, tube diameter, and confinement force.
AB - We formulate and apply a microscopic self-consistent theory for the dynamic transverse confinement field in solutions of zero-excluded-volume rods based solely on topological entanglements. In agreement with the phenomenological tube model, an infinitely deep potential is predicted. However, strong anharmonicities are found to qualitatively soften localization, in quantitative agreement with experiments on heavily entangled biopolymer solutions. Predictions are also made for the effect of rod alignment on the transverse diffusion constant, tube diameter, and confinement force.
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U2 - 10.1103/PhysRevLett.107.078102
DO - 10.1103/PhysRevLett.107.078102
M3 - Article
C2 - 21902432
AN - SCOPUS:80051646602
SN - 0031-9007
VL - 107
JO - Physical review letters
JF - Physical review letters
IS - 7
M1 - 078102
ER -