Structure and Properties of the Poly(lactic acid)/Polyamide-11/Poly(epichlorohydrin-co-ethylene oxide)Elastomer Ternary Blends

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Abstract In present work, fully renewable ternary blends were prepared from poly(lactic acid), bio-based polyamide 11 and poly(epichlorohydrin-co-ethylene oxide) elastomer via a melt blending method. Miscibility, phase behavior, thermal and mechanical properties of the ternary blend were thoroughly studied. Addition of the PA11 effectively improved the miscibility, thermal resistance, and toughness of the blends. PA11 continuous phases greatly increased the Vicat softening temperature of PLA above 160℃. Mechanical tests proved that 42.5%(mass fraction) content of PA11 could significantly improve the tensile toughness of the blend:the elongation at break of PLA/PA11/ECO(42.5/42.5/15) reached 295%. The impact strength of PLA/PA11/ECO(60/25/15) blend with only 25% PA11 increases to 47.4 kJ/m². A small amount of PA11 and ECO elastomer with high interfacial adhesions played a good synergistic effect on toughening PLA. Our research demonstrated that the PLA/PA11/ECO multi-component blending system is a simple and efficient method to gain high performance bio-based materials.

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	Articles by authors
	Jiang Hai
	Ding Yingli
	Huang Dong
	Liu Juyang
	Pan Li
	Zhang Kunyu

Keywords： poly(lactic acid)； polyamide 11； poly(epichlorohydrin-co-ethylene oxide)； ternary blend； toughening； heat-resistance

Received 2020-05-21;

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Jiang Hai, Ding Yingli, Huang Dong, Liu Juyang, Pan Li, Zhang Kunyu.Structure and Properties of the Poly(lactic acid)/Polyamide-11/Poly(epichlorohydrin-co-ethylene oxide)Elastomer Ternary Blends[J] Chemcial Industry and Engineering, 2021,V38(2): 1-8

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