Polymethyimethacryiate/Silver Nanocomposite Prepared by y-Ray

Polymethylmethacrylate-silver (PMMA/Ag) nanocomposite is synthesized by irradiating thesolution of silver ions in methylrnethacryl ate monomer by y-ray. In this method, polymerization of themethylmethacry late monomer and the silver ion reduction occurred simultaneously. Optical properti es ofthe PMMNAg solutions are investigated using UV-Vis spectroscopy. The structural characterizations ofthe PMMA/Ag nanocomposite are determined by FTIR spectroscopy XRD, and SEM measurements. TheSEM image shows that the Ag nanoparticles disperse in the PMMA matrix with a relatively uniformdistr ibution. The antibacterial studies show that the PMMAIAg nanocomposite is antibacterial against E.coli, as a model for gram-negative bacteria