Thursday 19th of January 2017
Iranian researchers applied silver nanoparticles and nanocellulose at laboratorial scale to produce papers with antibacterial properties
TEHRAN (INIC)- Iranian researchers from University of Tehran applied silver nanoparticles and nanocellulose at laboratorial scale to produce papers with antibacterial properties special to foodstuff packaging.
Packaging is an important section in foodstuff industry, which plays an important role in safety and quality of the products. Although plastic and glass prevent the diffusion of water, oil and oxygen into food containers, they are not biocompatible or fully sterilized and they require huge amount of energy to be produced. Therefore, there are some limitations in the applications of these materials. The use of paper has been proposed by packaging designers to overcome those problems.
The aim of the research was to produce antibacterial paper by using silver nanoparticles to be used in packaging industry.
Since paper is an eco-friendly material, results of this research may significantly reduce environmental pollution considering the fact that plastic and glass are not biodegradable.
In this research, the surface of two packaging papers were coated with cellulose nanofibers saturated with silver nanoparticles at various concentrations. Results showed that the optimum amount of silver nanoparticles is 5 and 10 ppm to prevent the growth of both bacteria. The produced papers have higher resistance to tension due to the presence of cellulose nanofibers that have high flexibility.
Results of the research have been published in Cellulose, vol. 23, 2016, pp. 557-570.