EPDM‐g‐MAH toughened bio‐based polyamide 56 to prepare thermoplastic polyamide elastomer and the performance characterization

Abstract

AbstractPolyamide is an engineering plastic, which has been widely used in industry and life. Polyamide 56, as a green and environmentally friendly bio‐based product, is gradually replacing traditional petroleum‐based products. However, in terms of auto parts, communication equipment, and mechanical products, a single polyamide monomer is difficult to meet the end‐use standard. EPDM‐g‐MAH (ethylene propylene diene monomer grafted with maleic anhydride) is melt blended with bio‐based polyamide 56 (PA56) in a twin‐screw extruder to obtain polyamide elastomers with different formulations. Subsequently, its morphology and structure, thermodynamic properties, crystallinity, and mechanical properties were analyzed. The test results show that the composites containing 10% EPDM‐g‐MAH have better impact resistance and thermal properties in the range of adding 0‑20 wt% EPDM‐g‐MAH. In the fracture morphology analysis, it is found that the interface between the rubber phase and the polyamide phase fused well, and the elastomer showed the ductile fracture.