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Deviation from 3-D Ising critical behaviour in aqueous electrolyte solutions

Kumar, A and Jacob, J and Ali, BMJ (1999) Deviation from 3-D Ising critical behaviour in aqueous electrolyte solutions. [Book Chapter]

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The near-critical behaviour in complex fluids, comprising electrolyte solutions, polymer solutions and amphiphilic systems, reveals a marked departure from the 3-D Ising behaviour. This departure manifests itself either in terms of a crossover from Ising to mean-field (or classical) critical behaviour, when moving away from a given critical point (Tc), or by the persistence of only mean-field region in the surprisingly close vicinity of Tc. The ilo,non-Ising features of the osmotic compressibility (chi(T,p)) in solutions of electrolytes, that exhibit orle or many liquid-liquid transitions, will be presented. The underlying cause of the breakdown of the anticipated 3-D Ising behaviour in aqueous electrolyte solutions is traced to the structuring induced by the electrolytes. New evidence constituting, measurements of small-angle X-ray scattering (SAXS) and the excess molar volume, is advanced to support the thesis of the close relationship, between the structuring and the deviation from the 3-D Ising critical behaviour in aqueous electrolyte solutions.

Item Type: Book Chapter
Series.: Solid State Physics: Proceedings of the D. A. E. Solid State Physics Symposium
Publisher: Universities Press india Ltd
Additional Information: Copyright of this article belongs to Universities Press india Ltd.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 12 Apr 2012 08:01
Last Modified: 12 Apr 2012 08:01
URI: http://eprints.iisc.ac.in/id/eprint/43888

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