Article de T. Lebarbé† ‡ ∥ , E. Grau† ‡ , B. Gadenne§ , C. Alfos§ , H. Cramail† ‡ , publié dans ACS Sustainable Chemistry & Engineering, 2015, vol. 3, n°2, p. 283-292
† Université de Bordeaux, Laboratoire de Chimie des Polymères Organiques, ENSCBP, 16 Avenue Pey-Berland, Pessac Cedex F 33607, France
‡ CNRS, Laboratoire de Chimie des Polymères Organiques, F 33607 Pessac Cedex, France
§ ITERG, 11 rue Gaspard Monge, Parc IndustrielPessac Cedex F 33600, France
∥ French Environment and Energy Management Agency, 20 avenue du Grézillé, E-BP 90406, Angers Cedex 01 F 49004, France
Polylactide (PLA) is one of the most mature biobased and biocompostable plastics currently in the market. Despite its mechanical properties comparable to the ones of some mainstream petroleum-based thermoplastics (PS, for instance), PLA inherent brittleness and heat sensitivity are issues for its full industrial development.
In this study, we investigated the melt-blending of PLLA (poly-L-lactide) with fatty acid-based flexible polyesters as an efficient way to tailor PLLA toughness. To that aim, a set of aliphatic polyesters has been developed by taking benefit of the large range of biobased building blocks that can be obtained from plant oils.
Melt-blending of the so-formed polyesters with PLLA resulted in improved properties that can be finely tailored by varying the structure and the properties of the plant-based polyester additives.