Volume 46, Number 3, May I 1999
|Page(s)||295 - 300|
|Published online||01 September 2002|
Fluid-fluid phase separation in hard spheres with a bimodal size distribution
Unilever Research Port Sunlight Laboratory
Quarry Road East, Bebington, Wirral, L63 3JW, UK
Accepted: 22 February 1999
The effect of polydispersity on the phase behaviour of hard spheres is examined using a moment projection method. It is found that the Boublik-Mansoori-Carnahan-Starling-Leland equation of state shows a spinodal instability for a bimodal distribution if the large spheres are sufficiently polydisperse, and if there is sufficient disparity in mean size between the small and large spheres. The spinodal instability direction points to the appearance of a very dense phase of large spheres.
PACS: 05.20.-y – Classical statistical mechanics / 64.75.+g – Solubility, segregation and mixing; phase separation / 82.70.Dd – Colloids
© EDP Sciences, 1999
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