Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties

Improving the antibacterial activity of biodegradable materials is crucial for combatting widespread drug-resistant bacteria and plastic pollutants. In this work, we studied polyaniline (PANI)-functionalized zinc oxide nanoparticles (ZnO NPs) to improve surface charges. A PANI-functionalized ZnO NP...

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Bibliographic Details
Published in:Polymers 2021-01, Vol.13 (3), p.425
Main Authors: Charoensri, Korakot, Rodwihok, Chatchai, Wongratanaphisan, Duangmanee, Ko, Jung A, Chung, Jin Suk, Park, Hyun Jin
Format: Article
Language:English
Subjects:
Antimicrobial agents
Biodegradability
E coli
Gram-positive bacteria
Hydrophobicity
Investigations
Mechanical properties
Metal oxides
Nanocomposites
Nanoparticles
Packaging
Particle size
Physical properties
Pollutants
Polyanilines
Polymers
Scanning electron microscopy
Spectrum analysis
Surface charge
Thermal stability
Zinc oxide
Zinc oxides
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Summary:Improving the antibacterial activity of biodegradable materials is crucial for combatting widespread drug-resistant bacteria and plastic pollutants. In this work, we studied polyaniline (PANI)-functionalized zinc oxide nanoparticles (ZnO NPs) to improve surface charges. A PANI-functionalized ZnO NP surface was prepared using a simple impregnation technique. The PANI functionalization of ZnO successfully increased the positive surface charge of the ZnO NPs. In addition, PANI-functionalized ZnO improved mechanical properties and thermal stability. Besides those properties, the water permeability of the bionanocomposite films was decreased due to their increased hydrophobicity. PANI-functionalized ZnO NPs were applied to thermoplastic starch (TPS) films for physical properties and antibacterial studies using Escherichia coli ( ) and Staphylococcus aureus ( ). The PANI-functionalized ZnO bionanocomposite films exhibited excellent antibacterial activity for both (76%) and (72%). This result suggests that PANI-functionalized ZnO NPs can improve the antibacterial activity of TPS-based bionanocomposite films.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym13030425