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arXiv · 0801.3768

Arrested state of clay-water suspensions: gel or glass?

B. Ruzicka·L. Zulian·R. Angelini·M. Sztucki·A. Moussaid·G. Ruocco
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Abstract

The aging of a charged colloidal system has been studied by Small Angle X-rays Scattering, in the exchanged momentum range Q=0.03 - 5 nm-1, and by Dynamic Light Scattering, at different clay concentrations (Cw =0.6 % - 2.8 %). The static structure factor, S(Q), has been determined as a function of both aging time and concentration. This is the first direct experimental evidence of the existence and evolution with aging time of two different arrested states in a single system simply obtained only by changing its volume fraction: an inhomogeneous state is reached at low concentrations, while a homogenous one is found at high concentrations.

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B. Ruzicka, L. Zulian, R. Angelini, M. Sztucki, A. Moussaid, G. Ruocco. 2008-01-24. Arrested state of clay-water suspensions: gel or glass?. https://doi.org/10.1103/physreve.77.020402

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