Simulation of a binary mixture of adhesive fluids

Canonical Monte Carlo simulation is used to study the structure of a binary mixture of Baxter's adhesive fluids. The simulation results are compared with the predictions resulting from the solution of the Percus-Yevick/Ornstein-Zernike equation. Two qualitatively different systems are considered, the one comprising adhesion among all possible species pairs and the other with attraction acting only between unlike particles. In the former case the correlation functions exhibit step discontinuities at the interparticle distances, which are the multiple of the molecular size of both species 1 and 2 as a consequence of the impulse character of 1-1, 2-2, and 1-2 adhesion. The latter system shows interesting shapes of correlation functions stemming from the interplay among the pure 1-1 and 2-2 repulsion, and 1-2 attractive interactions.