Toughening and compatibilization of polypropylene/polyamide‐6 blends with a maleated–grafted ethylene‐co‐vinyl acetate

Abstract

ABSTRACT:In this article, maleated-grafted ethylene-covinyl acetate (EVA-g-MA) was used as the interfacial modifier for polypropylene/polyamide-6 (PP/PA6) blends, and effects of its concentration on the mechanical properties and the morphology of blends were investigated. It was found that the addition of EVA-g-MA improved the compatibility between PP and PA6 and resulted in a finer dispersion of dispersed PA6 phase. In comparison with uncompatibilized PP/PA6 blend, a significant reduction in the size of dispersed PA6 domain was observed. Toluene-etched micrographs confirmed the formation of interfacial copolymers. Mechanical measurement revealed that the addition of EVAg-MA markedly improved the impact toughness of PP/PA6 blend. Fractograph micrographs revealed that matrix shear yielding began to occur when EVA-g-MA concentration was increased upto 18 wt %.

Effects of PP-g-MAH on the Mechanical, morphological and rheological properties of polypropylene and poly(acrylonitrile-butadiene-styrene) blends

“…[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] In the melt blends, maleic anhydride groups can easily react with functional groups of polymers to form block or graft copolymers. These resulting copolymers efficiently reduce the interfacial tension between two polymers, thus, also improve physical and mechanical properties of the blends.…”

Effects of polypropylene-g-dibutyl maleate on mechanical and rheological properties of PP/PA6 blends

“…So far, however, one successful approach of compatibilization for PP/PA6 blends is to use polypropylene grafted with maleic anhydride (PP-g-MAH) as a compatibilizer [2][3][4][9][10][11]. There are very few studies where a quite fine dispersion of the minor phase in the matrix can be achieved by using ionomers, polypropylene-grafted-acrylic acid, ethylene-butylene acrylate-grafted-fumaric acid, ethylene-ethyl acrylate-glycidyl methacrylate as compatibilizers [12][13][14].…”

Thermally Reversible Cross‐Linked Polyamides with High Toughness and Self‐Repairing Ability from Maleimide‐ and Furan‐Functionalized Aromatic Polyamides

“…Therefore extensive studies have been carried out on toughness improvements on such polymers by way of blending with a low-modulus component and copolymerization. [9][10][11][12][13] Uses of rigid inorganic particles are also reported to enhance the toughness of some semicrystalline thermoplastics. [14,15] Moreover, Takeichi et al [16] recently obtained highly tough cross-linked benzoxazine resins from polybenzoxazine precursors, implying that the establishment of polymer-polymer cross-linking systems might increase cross-linked polymer toughness.…”