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arXiv 0801.3768cond-mat.soft
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粘土-水悬浮液的被捕集状态:凝胶还是玻璃?

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

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

摘要:

本文用小角X射线散射(Q=0.03 - 5 nm ~(-1))和动态光散射(Cw = 0.6%-2.8%)研究了不同粘土浓度下带电胶体体系的老化。静态结构因子S(Q)是老化时间和浓度的函数。这是第一个直接的实验证据的存在和演化与老化时间的两个不同的逮捕状态在一个单一的系统中简单地获得只有通过改变其体积分数:一个不均匀的状态是在低浓度达到,而一个均匀的发现在高浓度。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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