DOI: 10.1051/jp2:1993196
J. Phys. II France 3 (1993) 1255-1270
Dilute and concentrated phases of vesicles at thermal equilibrium
P. Hervé1, D. Roux1, A.-M. Bellocq1, F. Nallet1 and T. Gulik-Krzywicki21 Centre de recherche Paul-Pascal, CNRS, avenue du Docteur-Schweitzer, 33600 Pessac, France
2 Centre de génétique moléculaire, CNRS, 91190 Gif-sur-Yvette, France
(Received 15 March 1993, accepted in final form 7 May 1993)
Abstract
A quaternary system made of an ionic surfactant (SDS), octanol, water and sodium chloride has been investigated. We present
experimental results that demonstrate the existence of a phase of vesicles at thermal equilibrium. We show that vesicles can
be prepared both in a dilute regime leading to an isotropic liquid phase of low viscosity and in a concentrated regime leading
to a phase of close packed vesicles (probably multilayered) exhibiting high viscosity and viscoelasticity.
82.70 - 61.25
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