Phys. Rev. Lett. 83, 4666–4669 (1999)

Structural Relaxation of Dense Suspensions of Soft Giant Micelles

Abstract

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R. Sigel¹, S. Pispas^2,1, D. Vlassopoulos¹, N. Hadjichristidis^2,1, and G. Fytas^1,*
¹FO.R.T.H.—Institute of Electronic Structure and Laser, P.O. Box 1527, 711 10 Heraklion, Crete, Greece
²Department of Chemistry, University of Athens, Panepistimiopolis, 15771 Zografou, Athens, Greece

Received 29 March 1999; published in the issue dated 29 November 1999

The dynamics of liquid-like ordered giant colloidal micelles in the wave vector range around the peak of the structure factor is explored using photon correlation spectroscopy. No thermodynamic slowing down of the collective density fluctuations is found, whereas the long-time diffusion coefficient follows the concentration dependence of the suspension viscosity. Polymer-layer mediated effects are proposed to govern the physics of this unexpected behavior.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.83.4666

DOI:

10.1103/PhysRevLett.83.4666

PACS:

82.70.Dd, 61.41.+e, 83.70.Hq

^*Also at Max-Planck Institut für Polymerforschung, Postfach 3148, D-55021, Mainz, Germany.

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Phys. Rev. Lett. 83, 4666–4669 (1999)

Structural Relaxation of Dense Suspensions of Soft Giant Micelles