The effect of temperature on the phase equilibria and the types of dispersions of the ternary system composed of water, cyclohexane, and nonionic surfactant

The phase diagrams of water-cyclohexane systems containing 3 and 7 wt. % of polyoxyethylene nonylphenylether have been determined as a function of temperature

K Shinoda

2004

Scholarcy highlights

  • The phase diagrams of water-cyclohexane systems containing 3 and 7 wt. % of polyoxyethylene nonylphenylether have been determined as a function of temperature
  • The characteristic temperature at which the mutual solubility of oil and water increases markedly by the aid of nonionic surfactant is closely related to the phase inversion temperature in emulsions
  • The marked increase in mutual solubility may result from the sandwich-like structure of surfactant, water, and oil layers
  • The dispersion types of the system have been determined over a wide temperature range
  • Except for the extreme volume fraction range, the water phase is continuous at low temperature, the oil phase is continuous at high temperature, and the surfactant phase is continuous at a medium temperature near the phase inversion temperature

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