Latex/AgNPs: Synthesis, and Their Antibacterial Activity

• Published in: Journal of cluster science 2022-05, Vol.33 (3), p.1211-1221
• Main Authors: Moumen, A., Zougagh, S., Halim, W., Lachhab, T., Mouslim, J., Badawi, M., Ouaskit, S.
• Format: Article
• Language: English
• Subjects: Absorption spectra; Antimicrobial agents; Bacteria; Catalysis; Cell membranes; Chemistry; Chemistry and Materials Science; Copolymers; E coli; Ethylene glycol; Heating; Infrared spectra; Infrared spectroscopy; Inorganic Chemistry; Latex; Microscopy; Microwave heating; Nanochemistry; Nanoparticles; Nanowires; Nitrates; Optical properties; Original Paper; Physical Chemistry; Silver; Silver nitrate; Spectrum analysis; Transmission electron microscopy; X-ray diffraction
• ISSN: 1040-7278; 1572-8862
• DOI: 10.1007/s10876-021-02050-3

Silver nanoparticles (Ag NPs) coated by an aqueous emulsion of copolymer were elaborated in a short time using polyol process and microwave (MW) heating. This approach is based on reducing AgNO 3 powder in the presence of two main components; ethylene glycol as a dispersed medium and an industrial copolymer (latex) as protecting agent. The structural, morphological and optical properties of the prepared silver nanoparticles have been investigated by UV–Vis spectroscopy, Infrared Spectroscopy (IR), X Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). It was found that all these properties are strongly correlated to the latex copolymer concentration and the MW heating process. The absorption band was determined by UV Visible spectra, showing several bands (localized surface Plasmon band) in the visible region at wavelengths between 410 and 430 nm. The TEM analysis of the obtained products indicates the presence of straight nanowires and dispersed, spherical silver nanoparticles with well-controlled size ranging from 7 to 20 nm. The X Ray Diffraction showed that silver nanoparticles synthesized exhibit face centered cubic (fcc) structure. The infrared spectra show the strong coordination between the surface of silver particles and molecules of latex by O–H and C=O groups. Antimicrobial activity of latex/Ag NPs against E. coli , Staphylococcus aureus , and Pseudomonas aeruginosa has been also demonstrated. The results indicated that latex/AgNPs may damage the structure of bacterial cell membrane.