Development of an antimicrobial material made of graphene oxide, polylactic acid/polyhydroxybutyrate, and CuO nanoparticles and its reprocessing effect on its properties

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Abstract In the present study nanocomposites made of polylactic acid (PLA), polyhydroxybutyrate (PHB), graphene oxide (GO), and copper (II) (CuO) nanoparticles on three compositions (1, 3 5 wt%), obtained through melt extrusion were developed. Properties in their first second processing evaluated, characterized colorimetry L*a*b*, Fourier‐transform infrared spectroscopy (FTIR), x‐ray diffraction (XRD), Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), mechanical properties (ASTM D638 standard), electron microscopy–energy‐dispersive (SEM‐EDX) antimicrobial activity under dynamic contact with ATCC25922 Escherichia coli . The results presented variations color crystallinity between different nanocomposites. Additionally, a higher was observed containing CuO, achieving up to 100% bacterial reduction at 3% nanoparticle content. When evaluating influence thermic processing, it could be seen an acceleration degradation process polymeric chains addition improvement dispersion nanoparticles, which reduced agglomeration generated crystalline state Highlights exhibit high activity. GO CuO show tendency agglomerate. Reprocessing induces chain scission. also enhances matrix homogenization. nanofiller

Язык: Английский

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Non-Fourier heat transfer analysis of sandwich conical shells with GPLs reinforced face sheets and porous core under moving heat flux

Results in Physics, Год журнала: 2025, Номер unknown, С. 108240 - 108240

Опубликована: Апрель 1, 2025

Язык: Английский

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Interval uncertainty analysis for the nozzle guide vane surface temperature profile in hydrogen-fueled gas turbine

Applied Thermal Engineering, Год журнала: 2025, Номер unknown, С. 126444 - 126444

Опубликована: Апрель 1, 2025

Язык: Английский

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ZnO-modified PLA/PBAT composites: a study on mechanical strength and biodegradability for sustainable packaging applications

Journal of the Korean Physical Society, Год журнала: 2024, Номер unknown

Опубликована: Дек. 6, 2024

Язык: Английский

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Water absorption properties of graphene nanoplatelets filled bamboo/kenaf reinforced polylactic acid hybrid composites

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 285, С. 138411 - 138411

Опубликована: Дек. 4, 2024

Язык: Английский

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