Inversión de emulsiones incluyendo acrilatos en la formulación

Abstract

The effect of the aqueous phase viscosity on phase behavior and standard inversion boundary has been studied on equilibrated systems and the dynamic emulsion inversion in the direction abnormal normal (C+?A+ y B-?A-), has been always discussed on systems formed by sodium dodecyl benzene sulphonate (SDBS)-sodium dodecyl sulphate (SDS), water, kerosene and pentanol. The change of the aqueous phase viscosity is produced by adding polyacrylate (textilan 567) to aqueous solutions, in where the pH is adjusted with the addition of ammonium hydroxide. The results indicate that the addition of polyacrylate alters the formulation, which results in variations in phase behavior and standard inversion boundary. An increase in the viscosity of the aqueous phase shifts the catastrophic branch of the standard inversion line (B-/A-), hence reducing the region of O/W emulsions. In addition, an increase in the viscosity of the aqueous phase in dynamic inversion process leads to a change of inversion line in the direction (B-/A- and C+/A+) toward higher and lower water percentages respectively.