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arXiv · 0811.2707

Equilibrium route to colloidal gellation: mixtures of hard sphere-like colloids

Ph. Germain·S. Amokrane
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Abstract

The binodals and the non-ergodicity lines of a binary mixture of hard sphere-like particles with large size ratio are computed for studying the interplay between dynamic arrest and phase separation in depletion-driven colloidal mixtures. Contrarily to the case of hard core plus short range effective attraction, physical gellation without competition with the fluid-phase separation can occur in such mixtures. This behavior due to the oscillations in the depletion potential should concern all simple mixtures with non-ideal depletant, justifying further studies of their dynamic properties.

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Ph. Germain, S. Amokrane. 2008-11-17. Equilibrium route to colloidal gellation: mixtures of hard sphere-like colloids. https://doi.org/10.1103/physrevlett.102.058301

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