Preparation of chitosan-copper nanoparticles coated Kraft paper, characterization and its antimicrobial activity
کلید واژه: nanoparticles, Copper, Chitosan, Coating, Kraft paper,
چکیده مقاله :
In this paper, chitosan-copper nanoparticles were successfully coated onto the Kraft paper using a dip coating process. First, chitosan-copper nanoparticles solution was prepared by reduction method and the use of ultrasonic radiation. It was employed copper sulphate pentahydrate as precursor salt, NaOH as a reducing agent and chitosan as capping agent to prepare chitosan-copper nanoparticles solution. The solution was analyzed by UV-Vis spectroscopy and dynamic light scattering (DLS). The size range of the produced chitosan-copper nanoparticles was about 60 nm. These chitosan-copper nanoparticles were successfully coated onto the Kraft paper using a dip coating process. The coated Kraft paper established very perfect antibacterial activity in contrast to gram negative and gram positive bacteria.After coating process, the coated Kraft paper was characterized by X-Ray diffraction and scanning electron microscopy (SEM). Then, the antimicrobial activity of the Kraft paper in contrast to Bacillus subtilis and Escherichia coli was measured by disc diffusion method.
چکیده انگلیسی :
