The effect of concentration of polypropylene grafted with butyl acrylate (PP-g-BA) compatibilizer on thermal, morphological, and mechanical properties of polypropylene/nylon-6 blends has been studied. It was observed that blends with 4.8 wt% concentration of PP-g-BA exhibited superior mechanical and morphological properties at all the compositions of PP/Ny-6. Attempts were made to correlate the experimental data for tensile modulus and strength with existing mathematical models.