The nano silver/polydopamine/cellulose fiber(nanoAg/PDA/CF) antibacterial paper is successfully in situ prepared by the twopot method without using any additional reducing agent. The scanning electron microscopy(SEM) and the energy dispersive X-ray spectroscopy(EDX) analyses reveal that the spherical or cuboidal silver nanopartiles with the size of 70~150 nm are loaded on the surface of the nanoAg/PDA/CF antibacterial paper. The X-ray diffraction(XRD) and the thermogravimetric(TG) analyses confirm that the silver nanopartiles are in situ generated and deposited on the polydopamine functionalized cellulose fiber surface. The novel nanoAg/PDA/CF antibacterial paper shows a remarkable antibacterial feature against both S. aureus and E. coli. The optimum preparative conditions of the nanoAg/PDA/CF composite are: the pH value of 8.5, the dopamine concentration of 125 mg/L, the silver nitrate concentration of 375 mg/L, the dopamine self-polymerization time of 2 h, and the room temperature.

cellulose fibers  /  polydopamine  /  nano silver  /  antibacterial paper  /  two-pot method