Analytical model of equation of state for polydisperse fluid of adhesive spherical particles

An analytical model of the equation of state is presented for the polydispe rse fluid of adhesive colloidal particles. The model is based on the mean-s pherical approximation solution of the Ornstein-Zernike equation for a mult icomponent hard sphere Yukawa fluid in which the Yukawa tails are sufficien tly short range and strong. In particular, assuming that distributions of d iameters and 'charges' of particles are described by the Schulz function, t he analytical expressions for the compressibility and the pressure for the intrinsically polydisperse fluid are given in terms of simple functions of the packing fraction, the adhesion parameter and the Schulz distribution pa rameter.