Abstract
The viscosity of emulsions is affected by the concentration of emulsifying agent normally employed in their preparation. This applies to both oil-in-water and water-in-oil systems. The effect is not constant for all emulsions that contain the same constituents irrespective of volume concentration disperse phase. On the contrary, it increases as the emulsions become more concentrated. The magnitude of the change with increasing disperse phase concentration depends on the type of emulsion and the chemical structure of the emulsifying agent. An equation is proposed that relatesη rel exponentially to both volume concentration of disperse phase and concentration of the emulsifying agent.
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