Design of toughened PLA based material for application in structures subjected to severe loading conditions. Part 1. Quasi-static and dynamic tensile tests at ambient temperature

Delphine Notta-Cuvier (1) , Amani Bouzouita (2, 3, 1) , Rémi Delille (1) , Grégory Haugou (1) , Jean-Marie Raquez (2, 3) , Franck Lauro (1) , Philippe Dubois (2, 3)

1 LAMIH - Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201
2 LPCM - Laboratory of Polymeric and Composite Materials, Université de Mons-Hainaut
3 CIRMAP - Centre d'Innovation et de Recherche en Matériaux Polymères

The suitability of a ternary composition 58 wt% polylactide (PLA) - 25 wt% poly(methyl methacrylate) (PMMA) - 17 wt% Impact modifier (Biostrong) for use in technical parts subjected to severe loading conditions was investigated. As a key point, its tensile behavior under high-strain-rate loading, for the moment at ambient temperature, was studied, which has not been done before for any PLA-based composition. Prior to dynamic tensile tests, it was verified that the appealing mechanical properties of PLA-PMMA-Biostrong composition previously achieved with material processed at laboratory scale are kept when the material is produced using industrial extrusion and injection processes. Finally, industrially produced PLA-PMMA-Biostrong composition showed high levels of tensile strength, rigidity and ductility for a wide range of strain-rate and is, therefore, suitable for use in highly-loaded technical parts.

Mots clés: "Polylactide"; "Toughening"; "High strain rate behavior"; "Industrialization"

Domaines: Mécanique [physics.med-ph]

Delphine Notta-Cuvier, Amani Bouzouita, Rémi Delille, Grégory Haugou, Jean-Marie Raquez, et al.. Design of toughened PLA based material for application in structures subjected to severe loading conditions. Part 1. Quasi-static and dynamic tensile tests at ambient temperature. Polymer Testing, 2016, 54, pp.233-243. ⟨10.1016/j.polymertesting.2016.07.020⟩. ⟨hal-03442735⟩