NEW CHARGED MICROHETEROGENEOUS SYSTEM - A MICROEMULSION WITH DROPLETSOF VARIABLE ELECTROSTATIC POTENTIAL

A method has been proposed for varying the electrostatic potential of droplets in emulsions of the oil/water type by introducing nonsurface- active hydrophilic-hydrophobic electrolytes into the aqueous phase. Co nsideration has been given to the simplest two-phase model using stand ard Gatvani potentials for interphase transfer of the individual ions to describe the properties of the electrolyte. From calculations based on this model relationships have been obtained between the electrosta tic potential of the microphase and the electrolyte properties: concen tration, droplet dimensions of the dispersed phase, and its mole fract ion. Limiting conditions have been discovered in terms of the droplet dimensions and mole fraction of the dispersed phase. Calculations have demonstrated the possibility of controlling the electrostatic potenti al of the emulsion droplets in the range +/-300 mV.