Abstract
The size effects during phase transformations in systems of submicro- and manometer sizes are expressed in significant changes in phase equilibria. Examples of ternary phase diagrams small volume systems in the literature are virtually absent. The size effect is demonstrated by creating a series of phase diagrams of an aniline-methylcyclopentane-hexane solution. The liquid-liquid phase equilibrium was simulated by the methods of chemical thermodynamics for particles (droplets) with a core-shell configuration with a radius of 100 and 50 nm at temperatures of 25 and 45^oC. Reducing the volume of this system is accompanied by a change in the heterogeneous region, the appearance of metastable states that are absent in the macrophase, and increase the thermodynamic stability of the homogeneous solution.
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