The stabilization effects of graphene oxide coupled with rosemary extract

The stabilization efficiencies produced on ethylene-propylene diene terpolymer (EPDM) by graphene oxide (GO) and rosemary extract (RM) are studied by nonisothermal chemiluminescence. The obtained eco-materials present an evident improvement of durability under the accelerated degradation occurred by gamma-exposure. The complementary contributions achieved by these additives in respect with the effects of their couple are discussed by means of the comparison of the onset oxidation temperatures characterizing the potential contributions of GO and RM by scavenging of free radicals. The oxidation resistance is evaluated by means of the values of activation energy, which is required for the delay of structural degradation. The values of activation energies increase by the addition of protectors and they maintain higher degree of stabilization in the irradiated polymers by means of the radiochemical crosslinking of polymer substrate.