Antibacterial Activity and Conductivity Properties of Nanocomposites based on Cellulose Acetate Nanofibers and Copper Nanoparticles

Document Type: Research Paper

Authors

1 Department of Chemistry, Faculty of Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran

2 Faculty of Science, Karaj Branch, Islamic Azad university, Karaj, Iran

Abstract

in this work, nanocomposites comprising copper nanoparticle in cellulose acetate (CA)
matrices have been prepared. In this manner, Copper nanoparticles prepared by its salt
reduced by sodium borohydride at various concentration. Then this nanoparticle solution was
mixed with polymer solution and electrospun by electrospinning device. The above
nanocomposite has been successfully detected by SEM, EDAX, FT-IR and UV-Vis
Spectroscopy and indicated that not only nanocopper and cellulose nanofiberhave created
good chemical interaction but also a relatively suitable size and distribution has been yielded
in the fibers. The resulted nanocomposite conductivity by four-probe method showed a
remarkable conductivity produced by nanocopper distribution in the tissue of nanocomposites
increasing as concentration rises. In addition, it has been realized that the above
nanocomposites have good antibacterial properties against Staphylococcus aureus (grampositive)
and also Escherichia Coli and Klebsiellapneumonia (gram-negative) bacteria.

Keywords