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Journal Articles Macromolecular Materials and Engineering Year : 2013

PLA/PHBV Films with Improved Mechanical and Gas Barrier Properties

Abstract

Blending poly(lactic acid) (PLA) with a small amount of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV; 10 wt%) using a custom multilayer co-extrusion process increases both ductility and gas barrier properties of extruded films compared with neat PLA and classical blending methods. The co-extrusion process allows multiplication of the number of alternate layers of PLA and PHBV within a film. It was observed that for a critical number of theoretical layers, PHBV layers are broken into lamellas. A well-developed lamellar morphology, with thin and long lamellas of highly crystalline PHBV in PLA matrix was obtained. A balance between aspect ratio and crystallinity of the lamellas, and their dispersion within the PLA matrix was needed to obtain films with improved permeability and mechanical properties.
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Dates and versions

hal-00980637 , version 1 (07-05-2014)

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Majdi Boufarguine, Alain Guinault, Guillaume Miquelard-Garnier, Cyrille Sollogoub. PLA/PHBV Films with Improved Mechanical and Gas Barrier Properties. Macromolecular Materials and Engineering, 2013, 298 (10), pp.1065-1073. ⟨10.1002/mame.201200285⟩. ⟨hal-00980637⟩
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