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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| Format: | Article |
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MDPI AG
2021-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/3/425 |
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| author | Korakot Charoensri Chatchai Rodwihok Duangmanee Wongratanaphisan Jung A. Ko Jin Suk Chung Hyun Jin Park |
| author_facet | Korakot Charoensri Chatchai Rodwihok Duangmanee Wongratanaphisan Jung A. Ko Jin Suk Chung Hyun Jin Park |
| author_sort | Korakot Charoensri |
| collection | DOAJ |
| description | 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 (<i>E. coli</i>) and Staphylococcus aureus (<i>S. aureus</i>). The PANI-functionalized ZnO bionanocomposite films exhibited excellent antibacterial activity for both <i>E. coli</i> (76%) and <i>S. aureus</i> (72%). This result suggests that PANI-functionalized ZnO NPs can improve the antibacterial activity of TPS-based bionanocomposite films. |
| first_indexed | 2024-03-09T03:21:48Z |
| format | Article |
| id | doaj.art-b1adb28a53ba419bbfeb7e711247f1cd |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T03:21:48Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-b1adb28a53ba419bbfeb7e711247f1cd2023-12-03T15:08:57ZengMDPI AGPolymers2073-43602021-01-0113342510.3390/polym13030425Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial PropertiesKorakot Charoensri0Chatchai Rodwihok1Duangmanee Wongratanaphisan2Jung A. Ko3Jin Suk Chung4Hyun Jin Park5Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, KoreaSchool of Chemical Engineering, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan 680-749, KoreaDepartment of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, ThailandDepartment of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, KoreaSchool of Chemical Engineering, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan 680-749, KoreaDepartment of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, KoreaImproving 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 (<i>E. coli</i>) and Staphylococcus aureus (<i>S. aureus</i>). The PANI-functionalized ZnO bionanocomposite films exhibited excellent antibacterial activity for both <i>E. coli</i> (76%) and <i>S. aureus</i> (72%). This result suggests that PANI-functionalized ZnO NPs can improve the antibacterial activity of TPS-based bionanocomposite films.https://www.mdpi.com/2073-4360/13/3/425thermoplastic starchFunctionalized ZnO NPsPolyanilinepositive surface chargeantibacterial activity |
| spellingShingle | Korakot Charoensri Chatchai Rodwihok Duangmanee Wongratanaphisan Jung A. Ko Jin Suk Chung Hyun Jin Park Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties Polymers thermoplastic starch Functionalized ZnO NPs Polyaniline positive surface charge antibacterial activity |
| title | Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties |
| title_full | Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties |
| title_fullStr | Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties |
| title_full_unstemmed | Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties |
| title_short | Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties |
| title_sort | investigation of functionalized surface charges of thermoplastic starch zinc oxide nanocomposite films using polyaniline the potential of improved antibacterial properties |
| topic | thermoplastic starch Functionalized ZnO NPs Polyaniline positive surface charge antibacterial activity |
| url | https://www.mdpi.com/2073-4360/13/3/425 |
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