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Phase separation of sterically stabilized colloids as a function of temperature

By J.W. Jansen, C.G. de Kruif and A. Vrij


Colloidal dispersions of sterically stabilized silica spheres in toluene are found to separate into two layers when the temperature drops below a certain threshold. The phase diagram shows a dependence on the overall concentration. The behaviour of the dilute phase compares with theoretically calculated binodals using polydispersity in the polymer-like attraction. For the concentrated phase no agreement is obtained

Topics: Scheikunde
Year: 1984
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