Abstract

The Polylactide (PLA)/Poly(butylene succinate)(PBS)/Organically Modified Montmorillonite (OMMT) nanocomposites with different ratio were manufactured via intense volume pulsating elongation flow. The nanostructure, microscopic morphology, crystallization property, thermostability, mechanical properties were well investigated. The processing mechanism was well discussed. The OMMT (C30B) was well dispersed, intercalated, and exfoliated in all the nanocomposites. The interlayer spacing doubled in all the nanocomposites. The clay mainly dispersed in PBS and located at the interface of PLA/PBS in all samples, which could be predicted by the interfacial tension, enthalpic interaction, and wettability parameter. Diameter of the in situ formed PBS fiber decreased as the C30B content increased. Nanocomposites with PBS content range from 30% to 70% displayed the co-continuous structure. The Young's modulus and elongation at break of the blend increased significantly by adding the clay.

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