THE REFERENCE INHOMOGENEOUS PERCUS-YEVICK APPROXIMATION FOR A DIMERIZING FLUID NEAR A HARD-WALL

The inhomogeneous OZ equation, together with the LMBW equation for the density profile, with the hulk associating fluid taken as a reference system, is solved. Wertheim's description of the reference fluid, whi ch provides an adequate description of chemical association far from t he surface, is used. In the vicinity of the surface, the reference inh omogeneous PY closure is formulated and applied. The theory of Werthei m for bulk association is combined, for what we believe is the first t ime, with a pair level theory for inhomogeneous fluids. A few prelimin ary results for this reference approach are reported.