Wall slip, shear banding, and instability in the flow of a triblock copolymer micellar solution

Sébastien Manneville 1 Annie Colin 2 Gilles Waton 3 François Schosseler 3
1 Phys-ENS - Laboratoire de Physique de l'ENS Lyon
2 LOF - Laboratoire du Futur
3 ICS - Institut Charles Sadron
Abstract : The shear flow of a triblock copolymer micellar solution (PEO-PPO-PEO Pluronic P84 in brine) is investigated using simultaneous rheological and velocity profile measurements in the concentric cylinder geometry. We focus on two different temperatures below and above the transition temperature Tc which was previously associated with the apparition of a stress plateau in the flow curve. (i) At T=37.0 °CTc, the stress plateau is shown to correspond to stationary shear-banded states characterized by two high shear rate bands close to the walls and a very weakly sheared central band, together with large slip velocities at the rotor. In both cases, the high shear branch of the flow curve is characterized by flow instability. Interpretations of wall slip, three-band structure, and instability are proposed in light of recent theoretical models and experiments.
Keywords : Surfactant and micellar systems Associated polymers Material behavior Non-Newtonian fluid flows Acoustical measurements and instrumentation
Type de document :
Article dans une revue
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2007, 75 (6), pp.061502. 〈10.1103/PhysRevE.75.061502〉
Liste complète des métadonnées

Littérature citée [86 références]  Voir  Masquer  Télécharger
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00526640
Contributeur : Sébastien Manneville <>
Soumis le : vendredi 15 octobre 2010 - 11:51:51
Dernière modification le : samedi 27 octobre 2018 - 01:24:33
Document(s) archivé(s) le : dimanche 16 janvier 2011 - 02:48:38

Fichier

tribloc_rev.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

ENS-LYON | INC-CNRS | UNIV-LYON1 | SITE-ALSACE | INSA-STRASBOURG

Citation

Sébastien Manneville, Annie Colin, Gilles Waton, François Schosseler. Wall slip, shear banding, and instability in the flow of a triblock copolymer micellar solution. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2007, 75 (6), pp.061502. 〈10.1103/PhysRevE.75.061502〉. 〈ensl-00526640〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

310

Téléchargements de fichiers

130

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD