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The effect of an electrolyte on phase separation in colloids

Author

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  • Bushmanova, S.V.
  • Ivanov, A.O.
  • Buyevich, Yu.A.

Abstract

We consider an influence of the solvent ionic strength on thermodynamic properties and conditions at the onset of instability of a monodisperse colloid, as well as on the coefficient of mutual Brownian diffusion of colloidal particles. Special attention is given to collective effects due to competition of the particles for ions to be adsorbed, which are proved to lead to a noticeable drop in the particle electric charge and potential as well as inthe ionic strength outside the double electric layers. An increase in the ionic strength above a region of relatively small electrolyte concentrations favours the phase separation of the colloid under otherwise identical conditions and causes the mutual diffusivity to markedly decrease, the more so the larger is the concentration of the particles.

Suggested Citation

  • Bushmanova, S.V. & Ivanov, A.O. & Buyevich, Yu.A., 1994. "The effect of an electrolyte on phase separation in colloids," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 202(1), pages 175-195.
    • Handle: RePEc:eee:phsmap:v:202:y:1994:i:1:p:175-195
    DOI: 10.1016/0378-4371(94)90173-2
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    References listed on IDEAS

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    1. Creutzburg, Reiner & Mathias, Adolf & Ivanov, Evgeni, 1992. "Fast algorithm for computing the fractal dimension of binary images," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 185(1), pages 56-60.
    2. Mitchison, Rosalind, 1982. "Easter Ross, 1750–1850: The Double Frontier. By Ian R. M. Mowat. Edinburgh: John Donald; Atlantic Highlands, New Jersey: Humanities Press, 1981. Pp. x, 270. $39," The Journal of Economic History, Cambridge University Press, vol. 42(2), pages 448-449, June.
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