The grafting efficiency on different nylons (6, 11, 12, 6,10 and 6,12) of ethylene-glycidyl methacrylate copolymer (PE-g-GMA) and ethylene-ethyl acrylate copolymer at a composition of 85/15, when melt-mixed under optimum conditions, was investigated. Two of these nylons, 6 and 11, were selected to be studied in the complete composition range. Using techniques like dynamic mechanical analysis, tensile testing, differential scanning calorimetry, scanning electron microscopy and Fourier transform infra-red spectroscopy (FTi.r.) for the characterization of the blends, it was shown that the most efficient grafting occurred in the case of nylon 11/PE-g-GMA blends. The formation of a copolymer was confirmed by extraction experiments. The existence of both polymers in the isolated copolymers was proved by FTi.r. and thermal analysis. Overall, the concept of the compatibilization of the polyamide-polyethylene system was confirmed in the case of nylon 11/HDPE compatibilized by PE-g-GMA copolymer.