Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties
- Authors
- Charoensri, Korakot; Rodwihok, Chatchai; Wongratanaphisan, Duangmanee; Ko, Jung A.; Chung, Jin Suk; Park, Hyun Jin
- Issue Date
- 2월-2021
- Publisher
- MDPI
- Keywords
- thermoplastic starch; Functionalized ZnO NPs; Polyaniline; positive surface charge; antibacterial activity
- Citation
- POLYMERS, v.13, no.3, pp.1 - 15
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMERS
- Volume
- 13
- Number
- 3
- Start Page
- 1
- End Page
- 15
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/129279
- DOI
- 10.3390/polym13030425
- ISSN
- 2073-4360
- Abstract
- 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 (E. coli) and Staphylococcus aureus (S. aureus). The PANI-functionalized ZnO bionanocomposite films exhibited excellent antibacterial activity for both E. coli (76%) and S. aureus (72%). This result suggests that PANI-functionalized ZnO NPs can improve the antibacterial activity of TPS-based bionanocomposite films.
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- Appears in
Collections - College of Life Sciences and Biotechnology > Division of Food Bioscience and Technology > 1. Journal Articles
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