Structural properties of a two-dimensional model for partly quenched colloidal dispersions

We have investigated a two-dimensional model for a three-component mixture with a large difference in diameters of hard core particles mimicking two c olloidal species and in diameter of solvent species. One of the colloidal s pecies is assumed to be quenched in disordered configuration and forms an a dsorbing medium. Another colloidal species together with the solvent compon ent attains an equilibrium distribution in a microporous space, The system is studied by using replica Ornstein-Zernike integral equations. Our main f ocus is on the behavior of the potential of mean force between movable coll oids dependent on matrix and solvent density. (C) 1999 Elsevier Science B.V . All rights reserved.