This work reports the study of the compatibilization of the blend of biopolyethylene and biopolyamide 6.10, both biobased. In this work, two polymers functionalized with maleic anhydride (PE-g-MA and SEBS-g-MA) were used as compatibilizers of the blend. The blends were prepared in a single screw extruder and subsequently molded by injection. SEM results showed the immiscibility of the Bio-HDPE/PA6.10 blend. With the addition of the compatibilizers, a compatible interface was formed. The DSC results showed changes in the crystallization behavior of the two phases with the addition of compatibilizers. FTIR results suggested that there was a reaction between the maleic anhydride of the compatibilizers and the terminal amino groups of the polyamide. The blend containing PE-g-MA showed greater stiffness, with an increase in the modulus of elasticity in relation to Bio-HDPE, while the blends containing SEBS-g-MA showed excellent resistance to impact and high elongation at break.
Keywords:
Biopolymers; reactive compatibilization; bio-based high-density polyethylene; biopolyamide 6.10; SEBS-g-MA; PE-g-MA