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

Abstract

In this paper, Chitosan-copper nanoparticles were successfully coated onto the Kraft paper<br />using a dip coating process. First, chitosan-copper nanoparticles solution was prepared by<br />reduction method and the use of ultrasonic radiation. It was employed copper sulphate pentahydrate<br />as precursor salt, NaOH as a reducing agent and Chitosan as capping agent to prepare<br />Chitosan-copper nanoparticles solution. The solution was analyzed by UV-Vis spectroscopy<br />and dynamic light scattering (DLS). After the coating process, the coated Kraft paper was characterized<br />by X-Ray diffraction and scanning electron microscopy (SEM). Then, the antimicrobial<br />activity of the Kraft paper, in contrast to Bacillus subtilis and Escherichia coli was measured<br />by disc diffusion method.