SYNTHESIS AND CHARACTERIZATION OF SILVER NANOPARTICLES WITH EPOXY RESIN COMPOSITES

Silver nanoparticles have excellent, electrical and optical properties that make them ideal for optical, biomedical and antimicrobial applications. The main objective of the current study was to change the surface resistance which may increase its absorption. In this research work silver nanoparticles were prepared by co-precipitation method. For this AgNO3 and epoxy resin were mixed in 250 ml deionized water and stirred for half hour. Then Ammonia solution NH4OH was added drop by drop to maintain the PH of solution at (10-11). After filtering the solution the filtrate was dried into oven for 2 hour at the temperature of 150 degrees C. After grinding it was placed into furnace at 1000 degrees C for the time span of 5 hours. Three samples were prepared by increasing the concentration of epoxy (0.25g, 0.5g and 0.75g) in the 0.5g of silver. Crystalline structure was examined by using XRD with peak intensity increase of 320 (a.u) at the angle of 270. The increase in the peak intensity shows that there is deposition of epoxy resin and the texture has been created in same directions. The sample having 0.5 g epoxy and 0.5g Ag examined by FTIR showed sharp peak at 796.72 cm(-1) having C-H bending. Also a broad peak appeared 564.88cm(-1) which matches to methyl group. Another sample having 0.75g epoxy in 0.5 g silver examined by FTIR showed a sharp peak at 875.79cm(-1) which shows C=C bonding. Three broad peaks were obtained at 1424.36cm(-1), 564.88cm(-1) and 464.80cm(-1) which are due to OH- bonding. The UV-Visible spectroscopy of the sample of epoxy with silver showed that lambda(max) is obtained at 381.98 nm, showing the strong photon absorption of the molecules. It was concluded that epoxy resin composite in silver is a promising approach to enhance the technological applications of silver nanoparticles.