Arrested state of clay-water suspensions: gel or glass?
Soft Condensed Matter
2009-11-13 v1
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.
Keywords
Cite
@article{arxiv.0801.3768,
title = {Arrested state of clay-water suspensions: gel or glass?},
author = {B. Ruzicka and L. Zulian and R. Angelini and M. Sztucki and A. Moussaid and G. Ruocco},
journal= {arXiv preprint arXiv:0801.3768},
year = {2009}
}
Comments
5 pages, 2 figures