Structural properties of a fluid of polymers confined in a porous matrix of star polymers

We have studied the structural properties of a fluid of linear polymer chains under the external field of a disordered porous matrix, represented by a frozen liquid configuration of star polymer particles. To this end, and using a coarse-grained description of both fluid and matrix, we have applied the replica Ornstein-Zernike formalism to this particular case where soft and ultra-soft inter-particle potentials have come into play. Our systematic investigations point out how the matrix influences the structural properties of the confined polymer fluid.