[en] In this work, the mechanical properties and morphology PP/recycled PET blends with addition of P(E-co-MA-co-GMA) copolymer and/or montmorillonite clay (MMT) was investigated. The blends were obtained by extrusion and their morphology was observed by scanning electron microscopy. The mechanical properties were evaluated by tensile and impact tests. Thin films of nanocomposites were characterized by x-ray diffraction (XRD). The addition of P (E-co-MA-co-GMA) or MMT clay separately promoted a decrease of the dispersed phase size. XRD analysis indicated that there was incorporation of polymer in clay galleries. The addition of clay in PP / PET blend resulted in an increase of apparent elastic modulus, impact resistance and HDT and a decrease of tensile strength and elongation at break. The addition of P (E-co-MA-co-GMA) resulted in an increased impact strength and reduction of other properties. There were no significant changes on mechanical properties when the clay and P (E-co-MA-co-GMA) are added simultaneously. (author)