Effects of grafting and long-chain branching structures on rheological behavior, crystallization properties, foaming performance, and mechanical properties of polyamide 6

Abstract Polyamide 6 (PA6) was modified with ethylene maleic anhydride syndiotactic copolymer resin (ZeMac), and triglycidyl isocyanurate (TGIC) as modifiers to prepare a grafting structure long-chain branching structure, respectively. The effects of two on the rheological behavior, crystallization properties, foaming performance, mechanical properties PA6 were systematically studied by rotating rheometry, differential scanning calorimetry electron microscopy. results showed that there differences in between modification methods, but they significantly improved rheological, PA6. In particular, through TGIC better performance various physicochemical characterizations. introduction ZeMac reduced average diameter bubbles pure from 146.32 88.12 µm, density increased 1.69 × 10 5 5.35 cells·cm −3 . 64.36 1.31 Moreover, both nonfoamed foamed samples after modification.