Nonionic amphiphile-oil-water system

Figure 16.3 also shows the phase diagrams of a nonionic amphiphile-oil-water system at TT c, respectively. Because of the relative densities of the phases, for Tupper-phase microemulsion in equilibrium with an aqueous phase, whereas for T>Tuc the system may be said to contain a lower-phase microemulsion in equilibrium with an oleic phase. However, if the existence of middle-phase microemulsions at intermediate temperatures is unknown, the respective phase pairs are likely to be called simply oil and water. 

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