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Article Abstract
Biodegradable poly(lactic acid) (PLA) based composites have broad application prospects in replacing common polyester-based composites, but poor toughness and low thermal stability of PLA composites is still unsatisfactory for practical applications. Herein, a new preparation method of PLA composites by doping rigid conductive cellulose nanofibers (CNFene) and tough poly(propylene carbonate) (PPC) to tailor island structure and synergistic reinforcement-toughening mechanism is presented. Moreover, the composite films and paper-based coated beverage straws prepared from these composites has excellent thermal stability, high-strength, and high-toughness. Compared to pure PLA film, the tensile strength, elastic modulus, and elongation at break of the best PLAPC were increased by 25.3%, 17%, and 17.5 times respectively. And the strength of PLAPC coated straws reached up to 49.4 MPa, which was 12.7 times higher than untreated paper-based straws and 70% higher than PLA-coated straws. The high-performance PLA-based composites expanded the application areas of bio-packaging and hot drink straws.
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| http://dx.doi.org/10.1016/j.ijbiomac.2025.143421 | DOI Listing |
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