Morphology-Crystallinity Relationship in PLA-PHBV Blends Prepared via Extrusion

Abstract:

Poly(lactic acid) (PLA) is a biodegradable thermoplastic polyester derived from renewable resources which may replace conventional polymers for some applications. To overcome some of its limitations such as poor gas barrier properties and low elongation at break, one method is to blend PLA with small amounts of other bio-based polymers. In this study, two processes, eg classical twin screw extrusion and a multilayer co-extrusion process have been used to combine PLA and poly(3-hydroxybutyrate-co-3-valerate) PHBV to obtain films with different blend morphologies. The effect of the morphology on the crystallinity has been studied and has hightlightned new behavior of PHBV. The addition of a nucleating agent in the PHBV to modify its crystallinity, has also been studied.

• Periodical: Key Engineering Materials (Volumes 554-557)
• Pages: 1707-1714
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.554-557.1707
• Online since: June 2013
• Authors: Alain Guinault, Gaelle Dutarte, Majdi Boufarguine, Guillaume Miquelard-Garnier, Cyrille Sollogoub
• Keywords: Crystallinity, Melt Blending, Morpholoy, Nucleating Agent, PHBV, PLA, Poly(lactic acid) (PLA)

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