Chemical Research in Chinese Universities
To enhance the mechanical and antibacterial properties of silver nanoparticle impregnated cellulosic fibers, carboxy-cellulose nanocrystals (CCN) were grafted with chito-oligosaccharides (COS), which were used as a stabilizer for silver nanoparticles (AgNP). Nanofibrous membranes reinforced with silver nanoparticle impregnated cellulosic fibers (CCN-COS-AgNP) were prepared via electrospinning using polyvinyl alcohol (PVA) as matrix. The effects of CCN-COS-AgNP contents on the morphology, surface composition, mechanical properties, and antibacterial performances of the prepared CCN-COS-AgNP/PVA membranes were examined. The CCN-COS-AgNP certainly improved the mechanical properties and antibacterial performances of the PVA nanofibers. The tensile strength was significantly increased from 4.40?MPa to 8.60 MPa when 8 wt% CCN-COS-AgNP was introduced. When 10 wt% CCN-COS-AgNP was added, the nanofibers showed an excellent antibacterial activity for S. aureus (Staphylococcus aureus) and E. coli (Escherichia coli), with
1. Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, China;
2. School of Art and Design, Taizhou University, Taizhou 318000, Chain;
3. Mechanical Engineering Department University of North Texas, UNT Discovery Park, 3940 North Elm St., Suite F101P, Texas, 76207-7102, USA.
