The attraction between the charge sites on the solid surface and the dipole of the PDMS molecules is one of the possible mechanisms that can delay the interfacial relaxation. Although PDMS is a nonpolar molecule, a dipole is induced when it contacts with a charged mica surface. The relaxation model based on the charge sites/molecular segments attraction has already been predicted to explain the long-range increase in the repulsive force in AFM force-distance curve and the formation of "immobilized" layer of lower density 6 near the solid surface on the interface.