Structural Properties of the Fluid Mixture Confined by a Semipermeable Membrane: A Density Functional Study

Abstract

Classical density functional theory (DFT) is employed to study the structural properties of a binary fluid mixture confined by a semipermeable membrane. The influences of volume fraction and size asymmetry on three characteristic densities and excess adsorption are investigated in detail. In addition, some of our results are calculated by the analytical method, which agree well with those from the DFT calculations. These results may provide helpful clues to understand the structural properties of other complex fluids or mixture confined by semipermeable membrane.

Modeling the Electric Double Layer at the Liposome Vesicle via Classical Density Functional Theory: Solution of Poisson’s Equations for Curved Membranes

“…46 The excess adsorption of a binary fluid mixture in a pore with a semipermeable membrane has been investigated by considering the effect of size ratio and volume fraction. 47 Emelyanova et al 14 studied the transmembrane potential of vesicles, which were immersed in an aqueous electrolyte. They observed that adding salt to the electrolyte reversed the sign of the transmembrane potential.…”

“…Researchers have reported the effect of different parameters, such as temperature, mole fraction of the mixture, density, and size ratio on the fluid structure near the membrane . The excess adsorption of a binary fluid mixture in a pore with a semipermeable membrane has been investigated by considering the effect of size ratio and volume fraction . Emelyanova et al studied the transmembrane potential of vesicles, which were immersed in an aqueous electrolyte.…”