Re-entrant glass transition and logarithmic decay in a jammed micellar system. Rheology and dynamics investigationJ. Grandjean and A. Mourchid
Complex Fluids Laboratory, Unité Mixte de Recherche 166 du CNRS-Rhodia 259 Prospect Plains Rd, Cranbury, NJ 08512, USA
(Received 5 June 2003; accepted in final form 18 December 2003)
Rheology and dynamics of micellar solutions of polystyrene-poly(acrylic acid) block copolymers are investigated in the jammed regime. With increasing attraction between soft spheres, both techniques capture the re-entrant liquid-to-glass transition. The dynamics was also investigated at an attraction strength above the re-entrant transition branch. With increasing concentration of sticky soft spheres in this region, the particle dynamics shows a remarkable extended logarithmic decay. All the theoretical predictions of mode coupling theory can be found in our system.
82.70.Dd - Colloids.
61.25.Hq - Macromolecular and polymer solutions; polymer melts; swelling.
64.70.Pf - Glass transitions.
© EDP Sciences 2004