A model for cage formation in colloidal suspension of laponite

Details A model for cage formation in colloidal suspension of laponite A model for cage formation in colloidal suspension of laponite

2007-02-20

arxiv.org/abs/cond-mat/0702467v3

J. Chem. Phys. 127, 081102 (2007)

Physics

Condensed Matter

Soft Condensed Matter

12 pages, 1 figures. The Journal of Chemical Physics, in press

Scientific paper

10.1063/1.2779026

In this paper we investigate glass transition in aqueous suspension of synthetic hectorite clay, laponite. We believe that upon dispersing laponite clay in water, system comprises of clusters (agglomerates) of laponite dispersed in the same. Subsequent osmotic swelling of these clusters leads to increase in their volume fraction. We propose that this phenomenon is responsible for slowing down of the overall dynamics of the system. As clusters fill up the space, system undergoes glass transition. Along with the mode coupling theory, proposed mechanism rightly captures various characteristic features of the system in the ergodic regime as it approaches glass transition.

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