Thermodynamic Investigation of the Effect of Interface Curvature on the Solid–Liquid Equilibrium and Eutectic Point of Binary Mixtures

• DOI: 10.1021/acs.jpcb.7b07271
• Publication Date: 2017-09-29T17:25:54Z
• Authors: Fanghui Liu; Leila Zargarzadeh; Hyun-Joong Chung; Janet A. W. Elliott
• Keywords: Freezing-point depression

Thermodynamic phase behavior is affected by curved interfaces in micro- and nanoscale systems. For example, capillary freezing point depression associated with the pressure difference between solid liquid phases caused interface curvature. In this study, thermal, mechanical, chemical equilibrium conditions are derived for binary solid–liquid a due to confinement capillary. This derivation shows equivalence of most general forms Gibbs–Thomson Ostwald–Freundlich equations. As an effect curvature on explained quantitatively water/glycerol system. Considering interface, complete diagram developed over range concentrations system (including pure water or precipitation glycerol depending concentration solution). compared traditional which assumption flat made. We show extent can affect composition-dependent precipitating processes, as well change eutectic temperature Understanding capillaries has applications food industry, soil science, cryobiology, nanoporous materials, various nanoscience fields.