abstract

• Colloid-polymer mixtures are frequently viewed as an effective one-component fluid (the colloid) with polymer-mediated depletion interactions. This view, together with conventional mode coupling theory, constitutes the current description of the reentrant glass transition experimentally observed in these systems. A more fundamental view is to consider these systems as what they actually are, namely, genuine highly size-asymmetric binary colloidal mixtures. In this Letter we demonstrate that the recently developed multicomponent self-consistent generalized Langevin equation theory of dynamic arrest correctly predicts the observed reentrance in excellent quantitative agreement with the experimental glass transition line of a colloid-polymer mixture. In this scenario the polymer plays a much more active dynamic role than in the conventional one-component description. © 2008 The American Physical Society.

authors

• Juárez-Maldonado R.
• Medina Noyola Magdaleno

publication date

• 2008-01-01

published in

• Physical Review Letters  Journal

keywords

• Binary mixtures; Colloid chemistry; Colloids; Glass; Mixtures; Photoresists; Polymers; Active dynamics; Colloidal mixtures; Component descriptions; Depletion interactions; Langevin equation theories; Mode coupling theories; Polymer mixtures; Quantitative agreements; Glass transition

Digital Object Identifier (DOI)

• 10.1103/PhysRevLett.101.267801

start page

end page

volume

• 101

issue

• 26