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Design of highly tough poly( l ‐lactide)‐based ternary blends for automotive applications
Author(s) -
Bouzouita Amani,
Samuel Cédric,
NottaCuvier Delphine,
Odent Jérémy,
Lauro Franck,
Dubois Philippe,
Raquez JeanMarie
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43402
Subject(s) - miscibility , materials science , toughness , lactide , composite material , poly(methyl methacrylate) , methyl methacrylate , izod impact strength test , molding (decorative) , polybutadiene , polymer blend , ternary operation , copolymer , natural rubber , brittleness , polymer , polymer chemistry , computer science , ultimate tensile strength , programming language
Technical renewable poly( l ‐lactide) (PLA)‐based blends represent an elegant way to achieve attractive properties for engineering applications. Recently, the miscibility between PLA and poly(methyl methacrylate) (PMMA) gave rise to new formulations with enhanced thermo‐mechanical properties but their high brittleness still remains a challenge to be overcome. This work here focuses on rubber‐toughened PLA/PMMA formulations for injection‐molding processes upon the addition of a commercially available ethylene‐acrylate impact modifier (BS). The miscibility between PLA and PMMA is not altered by the presence of BS but the incorporation of BS (17% by weight) into a PLA/PMMA matrix could enhance both ductility and toughness of PLA/PMMA blends for PMMA content up to 50 wt %. An optimum range of particle sizes ( d n ∼0.5 µm) of the dispersed domains for high impact toughness is identified. These bio‐based ternary blends appear as promising alternatives to petro‐sourced blends such as ABS‐based blends in engineering injection‐molding parts. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43402.