LAUSR

Abstract Super-toughened polyamide 6 (PA6) material was fabricated by applying a feasible and effective method involving reactive melt blending of PA6 and residue of plasticized poly(vinyl butyral) (r-PVB)/maleated poly(ethylene-1-octene) (POE-g-MA) masterbatch, in which the multicore structure could be formed in-situ in PA6 matrix. Interfacial, rheological and morphology measurements confirmed that the POE-g-MA was encapsulated by r-PVB in PA6 matrix. The sharp brittle-ductile transition was observed at a critical interparticle distance (τc) about 0.30 μm for PA6/r-PVB/POE-g-MA blends, and the impact strength was 22 – 24 times higher than that of neat PA6. The flexibility of r-PVB/POE-g-MA and the strong interfacial adhesion among the three blending composition were responsible for the super toughness of PA6/r-PVB/POE-g-MA ternary blends. The DSC results suggested that the improvement of toughness was also related to the decrease in glass transition temperature (Tg) and degree of crystallinity (Xc) of PA6 matrix.