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Bio-based polyamide 56 (PA56) is an environmentally friendly polymer but has not been widely used due to its inherent disadvantages of low impact strength and brittleness. In this paper, polyethylene and maleic anhydride grafted EPDM were used to co-modify PA56. The core-shell structure of PP and EPDM-g-MAH could increase the impact strength of the composites by a factor of 4.5 without significant loss of toughness. The toughness and rigidity of PA56 were balanced while the thermal stability and crystalline properties were maintained in a betterstate. This gives PA56 great potential for the automotive and construction machinery industries. [ABSTRACT FROM AUTHOR]

In this paper, a novel method has been successfully developed to prepare the polyamide 6/polystyrene/montmorillonite (APA6/PS/MMT) blends. The X-ray diffraction analysis, differential scanning calorimetry, scanning electron microscopy analysis, contact angle measurement, water absorption measurement, thermogravimetric analysis and mechanical properties test were performed separately to study the effects of P(St-co-IEM)-MMT-MPS on crystallinity, morphology, water resistance, thermal stability and mechanical properties. The results indicate the addition of MMT can promote the formation of the γ-phase. Moreover, it can improve the interfacial compatibility, water resistance, thermal stability and toughness. [ABSTRACT FROM AUTHOR]