期刊
POLYMERS
卷 13, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/polym13030425
关键词
thermoplastic starch; Functionalized ZnO NPs; Polyaniline; positive surface charge; antibacterial activity
资金
- school of life science and biotechnology for BK21PLUS, Institute of biomedical science, food safety, Korea university
- Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through High Value-added Food Technology Development Program [2020R1A2C101172311]
- National Research Foundation of Korea [4299990414630] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study enhanced the antibacterial activity of thermoplastic starch-based bionanocomposite films by modifying the surface of zinc oxide nanoparticles with polyaniline, leading to increased positive surface charge and improved mechanical properties and thermal stability. Additionally, the modified nanoparticles reduced water permeability of the films due to enhanced hydrophobicity. The antibacterial studies showed that the polyaniline-functionalized zinc oxide bionanocomposite films exhibited excellent antibacterial activity against both E. coli and S. aureus.
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据