[gamma]-irradiation from a [sup.60]Co source at a dose rate of 4.8kGy x [h.sup.-1] and at integral doses of 10, 25 and 50kGy, in air at room temperature (~298[degrees]K) after 5 years-aging in non-controlled open air storage, to evaluate the oxidative degradation resistance of (PS/PP (0/20) blends, with and without compatibilizer SBS, styrolux and stereon at 2.5wt%.
The samples (thickness 1mm) were irradiated with [gamma] rays at low integral doses of 10, 25 and 50kGy, and a dose rate of 4.8kGy x [h.sup.-1] in air, at room temperature (~298[degrees]K) with a [sup.60]Co source supplied by the Venezuelan Institute for Scientific Research (IVIC), after five years under non-controlled open air atmosphere.