6533b835fe1ef96bd129ea1c

RESEARCH PRODUCT

Poly (lactic acid)/D-limonene/ZnO bio-nanocomposites with antimicrobial properties

María Teresa UlloaAmparo Ribes-greusFrancesca Antonella SepúlvedaDaniel CanalesViviana Moreno-sernaLina M RivasOscar Gil-castellJ. Andrés OrtizJ. Andrés OrtizFrancisca RiveraCarlos LoyoRosario BenaventePaula A. Zapata

subject

Solucions polimèriquesNanocompositeD limoneneMaterials sciencePolymers and PlasticsMoldingGeneral ChemistryMolding (process)Antimicrobial02.- Poner fin al hambre conseguir la seguridad alimentaria y una mejor nutrición y promover la agricultura sostenibleSurfaces Coatings and FilmsLactic acid12.- Garantizar las pautas de consumo y de producción sosteniblesBiomaterialschemistry.chemical_compoundBiopolymers and renewable polymersDifferential scanning calorimetryChemical engineeringchemistryDifferential scanning calorimetryMAQUINAS Y MOTORES TERMICOSMaterials Chemistry03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edadesMaterials

description

[EN] Antimicrobial films of poly (lactic acid) (PLA)/D-limonene/zinc oxide (ZnO)-based bio-nanocomposites were prepared via melt compounding and subsequent thermocompression. D-limonene was incorporated at concentrations of 10 or 20 wt%, and ZnO pure nanoparticles and those organically modified with oleic acid (O-ZnO), with an average diameter of 13.5 nm, were included at concentrations of 3, 5, and 8 wt%. The plasticizing effect of D-Limonene was corroborated by a decrease in the glass transition temperature compared to pure PLA. The presence of ZnO and O-ZnO in the PLA matrix promoted a slight increase in the degree of crystallinity due to its nucleant performance. Although ZnO and O-ZnO induced lower thermal stability and slightly decreased microhardness in the composites, excellent antimicrobial performance was demonstrated. Both ZnO and O-ZnO nanocomposites reached 99.9% of effectiveness for nanoparticles content above 5 wt%, regardless of the source of irradiation, D-limonene concentration, and nanoparticle modification. Therefore, these bio-nanocomposites will allow for future advances in sustainable antimicrobial materials for the medical or food packaging fields.

yearjournalcountryeditionlanguage
2022-01-01
10.1002/app.51542http://hdl.handle.net/10261/262780