Preparation of Chitosan-Copper Nanoparticles Coated Kraft Paper, Characterization and its Antimicrobial Activity

In this paper, Chitosan-copper nanoparticles were successfully coated onto the Kraft paperusing a dip coating process. First, chitosan-copper nanoparticles solution was prepared byreduction method and the use of ultrasonic radiation. It was employed copper sulphate pentahydrateas precursor salt, NaOH as a reducing agent and Chitosan as capping agent to prepareChitosan-copper nanoparticles solution. The solution was analyzed by UV-Vis spectroscopyand dynamic light scattering (DLS). After the coating process, the coated Kraft paper was characterizedby X-Ray diffraction and scanning electron microscopy (SEM). Then, the antimicrobialactivity of the Kraft paper, in contrast to Bacillus subtilis and Escherichia coli was measuredby disc diffusion method.