Facile fabrication of polyethylene/silver nanoparticle nanocomposites with silver nanoparticles traps and holds early antibacterial effect |
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| Authors: | Dau Hung Anh Kanchana Dumri Nguyen Tuan Anh Winita Punyodom Pornchai Rachtanapun |
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| Affiliation: | 1. Division of Packaging Technology, Faculty of Agro‐Industry, Chiang Mai University, Chiang Mai, Thailand;2. Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand;3. Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand;4. Microanalysis Department, Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam |
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| Abstract: | Antibacterial polyethylene (PE)/silver nanoparticle (AgNP) nanocomposites containing AgNPs at concentrations of 5 × 10?5, 5 × 10?4, and 5 × 10?3 wt % were fabricated and tested. Transmission electron microscopy revealed an even dispersion of surface AgNPs in the PE/AgNP nanocomposites. No AgNP agglomeration was observed. The tensile strength, elongation at break, and Young's modulus of these PE/AgNP nanocomposites were similar to those of neat PE. Differential scanning calorimetry demonstrated that the PE/AgNP nanocomposites and neat PE had similar melting and crystallization temperatures of 126 ± 0.5 and 109 ± 0.6°C, respectively. The heats of fusion of the PE/AgNP nanocomposites containing AgNPs at concentrations of 5 × 10?5 and 5 × 10?4 and of 5 × 10?3 wt % were lower than those of neat PE by 5 and 7%, respectively. These PE/AgNP nanocomposites were immersed in shaking liquid cultures of the potential pathogenic bacteria Escherichia coli, Bacillus subtilis, and Salmonella typhimurium in the lag phase. The results show that the growth rates of all of the tested bacteria were restricted effectively after 1.5, 3, and 6 h of cultivation, respectively. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43331. |
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| Keywords: | antibacterial nanocomposite nanoparticle packaging polyethylene |
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