Abstract

SYNTHESIS AND ANTIMICROBIAL ACTIVITY OF NANOCOMPOSITES OF POLYANILINE AND SILVER NANOPARTICLES VIA SELF-ASSEMBLY METHOD

D. Rama Devi*, B. Ganga Rao and K. Basavaiah

ABSTRACT

Nanocomposites of conducting polymer Polyaniline (PANI) and silver nanoparticles (Ag NPs) have been prepared via chemical oxidative polymerization of monomer using AgNO3 as an oxidant in presence of CSA without using any external oxidizing and reducing agents. As prepared nanocomposites of CSA doped PANI/Ag NP have been characterized by range of spectroscopy as well as microscopy techniques such as UV-vis spectroscopy, FTIR spectroscopy, X-Ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The thermal stability of nanocomposite of PANI/Ag NPs was investigated by thermogravimetry analysis (TGA). The XRD patterns indicated that the crystalline phase of Ag NPs is cubic. The TEM image shows that the Ag NPs are well dispersed in the PANI nanostructures. The CSA doped PANI/Ag NPs nanocomposites show excellent an antimicrobial activity against staphylococcus aureus.

Keywords: Silver nanoparticles, Polyaniline, Nanocomposites, oxidative chemical polymerization, Antimicrobial activity.