Polypyrrole/Silver Nanocomposite: Synthesis, Characterization and Antibacterial Activity

Polypyrrole/silver (PPy/Ag)nanocomposite was synthesized by a chemical oxidative method. SEM and TEM analyses were performed for studying the morphology of the nanocomposite. It was shown that the obtained nanocomposite particles have a spherical structure with the high surface area to volume ratio that is the important factor in the biological application. The particle sizes of the PPy/Ag were ۱۵–۲۵ nm obtained by TEM. The antibacterial property was assessed by the disk diffusion method against gram-negative Escherichia coli and gram-positive Staphylococcus aureus bacteria. The antibacterial mechanism of action for PPy/Ag nanocomposite was discussed. PPy/Ag showed antibacterial activity against S. aureus (۵ ± ۰.۵ mm) and E. coli (۸ ± ۰.۵ mm). Based on satisfactory antibacterial properties of PPy/Ag nanocomposite, it could be considered as a suitable material in biomedical applications.

کلیدواژه ها:

Polypyrrole ، Silver ، Nanocomposite ، Morphology ، Antibacterial mechanism