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Phase Separation in Bimodal Dispersions of Sterically Stabilized Silica Particles

J. S. van Duijneveldt, A. W. Heinen and H. N. W. Lekkerkerker

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Binary mixtures of suspended, nearly hard-sphere, sterically stabilized colloidal silica particles of diameter ratio 6 were observed to phase-separate at comparable volume fractions of the two particle species. The occurrence of phase separation as a function of the particle concentrations was studied visually and by small-angle light scattering. The results support recent predictions by Biben and Hansen.


PACS

82.70.Dd Colloids

64.75.+g Solubility, segregation, and mixing; phase separation

Subjects

Soft matter, liquids and polymers

Chemical physics and physical chemistry

Dates

Issue 3 (20 January 1993)

Received 8 September 1992



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