Density profiles of associating fluid near a hard wall: PY/EMSA and HNC/EMSA singlet theory

A two-component model of hard spheres with a spherically symmetric associative interaction between the particles of different species near a hard wall is studied by suing the integral equation method. It is shown that the extended mean spherical approximation for the bulk associating fluid in conjunction with the Percus-Yevick closure of the singlet level theory of inhomogeneous fluid leads to very good agreement of theoretical density profiles with simulation data for highly associated fluid at a high bulk density.