By S. Friberg, I. Burasczenska (auth.), A. Weiss (eds.)
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Extra info for Emulsions
The dispense phase of the emulsion was petroleum ether from the Alexandria Petroleum Company, it was distilled, and the 100-120 °C fraction was collected and passed through an alumina column to remove surface active impurities. Pure water was doubly distilled from an all glass apparatus (Barnstead). 2°/0 by volume Fig. 1 a. Microphotograph of the IV"emulsion Fig. 2p where ~ and e are the viscosity in poises and the dielectric constant of the suspended liquid respectively. The values of the conversion factor were obtained by interpolation from a large scale plot as a function of temperature.
J. Coll. Sci. 6, 492 (1951). Authors' address: A. O. Box 832 Alexandria (Egypt) Progr. Colloid & Polymer Sci. 63, 41-49 (1978) © 1978 Dr. Dietrich Steinkopff Verlag, Darmstadt ISSN 0340-255 X Agra College, Agra (India) Role of finely dispersed solids (hydroxides of polyvalent metals) as emulsifiers S. N . S r i v a s t a v a With 8 figures and 7 tables (Received December 6, 1976) Introduction The first attempt to explain the stability of solid stabilized emulsions in a quantitative manner was made by Van der Minne (1) who showed that under thermodynamic equilibrium the adsorption of solid particles at the liquid liquid interface is governed by its contact angle against the solid, an obtuse contact angle against the solid phase facilitating the stabilization.
Co(NHa)4] C14- [ tOHN i -] 4H20, Q) [CO/oH/CO(NHa)4JaJC16 complex Co salts with varying complex cations have been used to coagulate the negatively charged emulsions of the present system. It can be seen from table 5 that with complex ions relatively lower concentrations are required to bring about substantial decrease Triton X-100 = CsH 17C6Hs(CH2CH20)~. 7, the latter being isooctyl methyl phenyl derivative. It can be seen from the table 6 that these detergents get adsorbed at the hydroxide coated oil-water interface and thereby lower the zeta potential of the emulsion droplets.
Emulsions by S. Friberg, I. Burasczenska (auth.), A. Weiss (eds.)