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Design of highly tough poly(L-lactide)-based ternary blends for automotive applications

Abstract : Technical renewable poly(L-lactide) (PLA)-based blends represent an elegant way to achieve attractive properties for engi-neering applications. Recently, the miscibility between PLA and poly(methyl methacrylate) (PMMA) gave rise to new formulationswith enhanced thermo-mechanical properties but their high brittleness still remains a challenge to be overcome. This work herefocuses on rubber-toughened PLA/PMMA formulations for injection-molding processes upon the addition of a commercially avail-able ethylene-acrylate impact modifier (BS). The miscibility between PLA and PMMA is not altered by the presence of BS but theincorporation of BS (17% by weight) into a PLA/PMMA matrix could enhance both ductility and toughness of PLA/PMMA blendsfor PMMA content up to 50 w t %. An optimum range of particle sizes (dn0.5 mm) of the dispersed domains for high impacttoughness is identified. These bio-based ternary blends appear as promising alternatives to petro-sourced blends such as ABS-basedblends in engineering injection-molding parts
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Submitted on : Wednesday, November 24, 2021 - 1:45:57 PM
Last modification on : Thursday, November 25, 2021 - 3:45:36 AM

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Amani Bouzouita, Cédric Samuel, Delphine Notta-Cuvier, Jérémy Odent, Franck Lauro, et al.. Design of highly tough poly(L-lactide)-based ternary blends for automotive applications. Journal of Applied Polymer Science, Wiley, 2016, 133 (19), ⟨10.1002/app.43402⟩. ⟨hal-03446635⟩

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