Abstract
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.
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