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Abstract-In this study,nanocomposites based on polypropylene and polyethylene containing 0 to 7phr of nanoclay and 3phr of maleated polypropylene (PP-g-MA) and maleated polyethylene (PE-g-MA) as compatibilizer were prepared by melt compounding followed by injection molding.Morphology of the mixtures was carried out through Field Emission Scanning Electron Microscopy (FESEM). Mechanical properties of different samples were examined empirically by tension and izodimpact tests.Test results show that the addition of clay particles to the PP and LLDPE, increases the tensile strength, yield strength, tensile modulus and decreases impact strength and elongation at break compared to pure polymer.Themixture design method and Minitab16 software were utilized for designing the tests, statistical analyses, and optimization the mechanical properties of the mixtures.Results showed that the in compounds based on polypropylene and polyethylene, respectively, compounds includes 3.96 and 2.12percent clay has the best mechanical properties.blends base on PP have better tensile modulus and LLDPE blends have better impact strength.

Keywords: "Mechanical properties", "polymer", "clay, "statistical analysis", "nanocomposites"

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