Preventive protection of paper works by using nanocomposite coating of zinc oxide

In this work, we investigate the role of zinc oxide nanoparticles in the inherent protection of paper works against damaging effects of ultraviolet radiation, pollutant gasses, mold, and bacteria. For this purpose, the cellulosic nanocomposite of ZnO was used as protective coating on the surface of the paper. This nanocomposite can act as a consolidant as well. To determine the protective potential of this coating, the chemical and physical properties of treated papers after light and heat accelerated aging were measured. Results showed good stability of papers with nanocomposite coating. Also, a good light stability was shown in the colored paper that was treated with this nanocomposite. Furthermore, to demonstrate the degree of antifungal and antibacterial properties of coated papers, sample papers were treated with two common fungi and bacteria, and the positive preventive effect of coated paper against fungi and bacteria was observed.