Experimental and computational investigation of polylactic acid/silver‐NP nanocomposite with antimicrobial activity prepared by plasma in liquid

In this study, an underwater impulse discharge initiated in an aqueous suspension of a polylactide acid between silver rods is applied to produce silver nanoparticles (AgNPs) and create a polymer nanocomposite. The spectral and energy characteristics of the discharge are obtained. The composites are...

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Bibliographic Details
Published in:Plasma processes and polymers 2021-02, Vol.18 (2), p.n/a
Main Authors: Sirotkin, Nikolay A., Gurina, Darya L., Khlyustova, Anna V., Costerin, Dmitry Yu, Naumova, Irina K., Titov, Valeriy A., Agafonov, Alexander V.
Format: Article
Language:English
Subjects:
Antiinfectives and antibacterials
antimicrobial activity
Biodegradable materials
Discharge
E coli
Electron microscopy
Food packaging
Infrared analysis
Microscopy
Molecular dynamics
Nanocomposites
Nanoparticles
plasma
Polylactic acid
polylactic acid (PLA)
Silver
silver nanoparticles
Thermogravimetric analysis
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Summary:In this study, an underwater impulse discharge initiated in an aqueous suspension of a polylactide acid between silver rods is applied to produce silver nanoparticles (AgNPs) and create a polymer nanocomposite. The spectral and energy characteristics of the discharge are obtained. The composites are characterized by methods of scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, and thermogravimetric analysis. Investigation of the formation of the composite of polylactic acid (PLA) with AgNP has been performed using the molecular dynamics method. The PLA/AgNPs composite films were effective against Escherichia coli, Staphylococcus aureus, Bacillus subtilis, Candida albicans, and thus may find future application in the food packaging area. We investigated a one‐step method for creating composite polymer materials containing silver nanoparticles (AgNPs). An underwater impulse discharge initiated between silver electrodes placed in a water suspension of dissolved PLA is applied to produce AgNPs and incorporate them into the polylactide matrix. We observed a strong antimicrobial activity of PLA/AgNPs films against Gram‐negative bacteria, Gram‐positive bacteria, and yeasts
ISSN:1612-8850
1612-8869
DOI:10.1002/ppap.202000169