In the present study, polypropylene-silver composites were prepared via addition of milled Ag powder to polypropylene (PP) matrix and subsequently injection molding was applied for final shaping. In order to add the milled Ag powders to granular PP feedstock two different approaches were studied prior to mixing them in extruder to obtain homogeneous dispersion in PP matrix. The effects of different ratio of silver on the properties of composites were analyzed by using different characterization techniques (DSC, FTIR, SEM and XRD). DSC analysis was used for determination of crystallinity that highly affects the antibacterial behavior of composites. Moreover, the thermal analysis and FTIR studies showed there is no degradation on the polypropylene matrix with addition of the silver content.