Adsorption of associating fluids on solid surfaces: Wetting transition from density functional theory

Adsorption of associating hard spheres and particles interacting via the Le nnard-Jones potential at a Lennard-Jones adsorbing wall is studied using th e density functional theory. A model of association with one site per parti cle is considered. To test the theory we have also performed Monte Carlo si mulation in the canonical ensemble for a Lennard-Jones associating fluid at high temperatures and fur hard associating spheres. Next, the influence of association on the wetting behavior of the fluid-solid interface is invest igated. It is shown that the prewetting transition in associating systems i s considerably influenced by the association processes.