Abstract
In this paper, the maleic anhydride-grafted copolymer (EPT-g-MAH) and itaconic acid-grafted copolymer (EPT-g-ITA) were used as interfacial modifier of polyamide 6/ethylene propylene terpolymer (PA 6/EPT) blends, and the effects of their concentration on the mechanical properties and morphology of blends were investigated. It was found that the introduction of EPT-g-MAH and EPT-g-ITA improved the compatibility between PA 6 and EPT. The mechanical properties test revealed that the compatibilizer EPT-g-MAH and EPT-g-ITA improved the impact toughness of PA 6/EPT blends significantly, and the compatibilization effect of EPT-g-MAH was better than EPT-g-ITA. When EPT-g-MAH concentration was 15%, the impact strength of blends reached to 132kJ/m2 more than 20 times than PA 6. SEM showed that the high toughness of PA 6/EPT blends was the result of shear deformation of PA 6 matrix induced by dispersion phase EPT.
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