839074.fig.001a
(a)
839074.fig.001b
(b)
Figure 1: (a) Schematic “channel-shaped” phase prism of a ternary mixture of oil/water/nonionic surfactant in temperature-composition space at constant concentration showing a single phase ( ) and two two-phase regions (b) Schematic “channel-shaped” phase diagram of a ternary mixture of oil/water/nonionic surfactant at vertical section of the phase prism at constant surfactant concentration . The single phase ( ) is surrounded by two two-phase regions in which nonionic Gemini surfactant is dissolved either aqueous bottom phase (2) or organic top phase (2). For detail please see text.