Abstract: The present invention relates generally to a grafting process comprising the formation of a grafted polymeric structure having a substrate polymer in hybrid formation with one or more of the same or other polymers or monomeric subunits thereof. More particularly, the present invention contemplates a method of generating a homogenous or heterogenous grafted polymer by inducing or otherwise facilitating free radical formation to initiate polymerization of monomer units corresponding to the same or different polymers to a substrate polymer previously subjected to physical stress means. The resulting hybrid polymer may comprise a substrate polymer and a population of a second or further polymers in homogenous or heterogenous hybrid formation with the substrate polymer. A homogenous population includes a grafted population of the same polymer whereas a heterogenous population comprises a grafted population of two or more different polymers.