Synthesis of Silver Polymer Nanocomposites and Their Antibacterial Activity

Abstract

PVA (Polyvinyl Alcohol) silver nanocomposites of different sizes were prepared by chemical reduction method. Silver nitrate was taken as the metal precursor and amine hydrazine as a reducing agent. The formation of the silver nanoparticles was noticed using UV-visible absorption spectroscopy. The UV-visible spectroscopy revealed the formation of silver nanoparticles by exhibiting the surface plasmon resonance. The bactericidal activity due to silver release from the surface was determined by the modification of conventional diffusion method. Salmonella typhimurium, Serratia sps and Shigella sps were used as test bacteria which are gram-negative type bacteria. Effect of the different sizes of silver nano particles on antibacterial efficiency was discussed. Zones of inhibition were measured after 24 hours of incubation at 37 0 C which gave 20 mm radius for high concentration of silver nanoparticles.

Antibacterial and Anticancer Potential of Silver Nanoparticles Synthesized Using Gallic Acid in Bentonite/Starch Bio-Nanocomposites

“…In recent years, BNCs have attracted more attention in the field of life science, nanotechnology, engineering, and pharmaceutical fields due to its unique properties [18,19]. These are a new class of nanomaterial's which contains the naturally originated biopolymers from plants, microorganism and inorganic solids on the nanometer scale [20][21][22] which exhibits improved structural and functional properties in comparison to conventional nanocomposites used for different applications [22,23]. The unique features of natural polymers such as biocompatibility and biodegradability opened new prospects for these materials in the field of nanoscience.…”