Nonequilibrium chemical potential and shear-induced migration of polymers in dilute solutions

L. F. Del Castillo; M. Criado-Sancho; D. Jou

doi:https://doi.org/10.1016/S0032-3861(99)00432-2

Nonequilibrium chemical potential and shear-induced migration of polymers in dilute solutions

L. F. Del Castillo, M. Criado-Sancho, D. Jou

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

16 Citations (Scopus)

Abstract

We consider the contribution of a nonequilibrium chemical potential depending on the shear rate on shear-induced polymer migration. It is seen that this nonequilibrium contribution strongly enhances, above a threshold of polymer concentration and of shear rate, the migration of the polymer towards the regions with lower stress. This enhancement may explain why the migration rate experimentally observed is much higher than that predicted by constitutive laws where the nonequilibrium effects on the chemical potential are ignored.

Original language	English
Pages (from-to)	2633-2638
Journal	Polymer
Volume	41
DOIs	https://doi.org/10.1016/S0032-3861(99)00432-2
Publication status	Published - 17 Dec 1999

Keywords

Cone-and-plate
Nonequilibrium chemical potential
Polymer migration

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abstract = "We consider the contribution of a nonequilibrium chemical potential depending on the shear rate on shear-induced polymer migration. It is seen that this nonequilibrium contribution strongly enhances, above a threshold of polymer concentration and of shear rate, the migration of the polymer towards the regions with lower stress. This enhancement may explain why the migration rate experimentally observed is much higher than that predicted by constitutive laws where the nonequilibrium effects on the chemical potential are ignored.",

keywords = "Cone-and-plate, Nonequilibrium chemical potential, Polymer migration",

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AU - Del Castillo, L. F.

AU - Criado-Sancho, M.

AU - Jou, D.

PY - 1999/12/17

Y1 - 1999/12/17

N2 - We consider the contribution of a nonequilibrium chemical potential depending on the shear rate on shear-induced polymer migration. It is seen that this nonequilibrium contribution strongly enhances, above a threshold of polymer concentration and of shear rate, the migration of the polymer towards the regions with lower stress. This enhancement may explain why the migration rate experimentally observed is much higher than that predicted by constitutive laws where the nonequilibrium effects on the chemical potential are ignored.

AB - We consider the contribution of a nonequilibrium chemical potential depending on the shear rate on shear-induced polymer migration. It is seen that this nonequilibrium contribution strongly enhances, above a threshold of polymer concentration and of shear rate, the migration of the polymer towards the regions with lower stress. This enhancement may explain why the migration rate experimentally observed is much higher than that predicted by constitutive laws where the nonequilibrium effects on the chemical potential are ignored.

KW - Cone-and-plate

KW - Nonequilibrium chemical potential

KW - Polymer migration

U2 - https://doi.org/10.1016/S0032-3861(99)00432-2

DO - https://doi.org/10.1016/S0032-3861(99)00432-2

M3 - Article

VL - 41

SP - 2633

EP - 2638

JO - Polymer

JF - Polymer

SN - 0032-3861

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