Preparation of Nano Silver/Silk Fibroin Composite Films

In this study, the outstanding biocompatibility of silk fibroin( SF) and the highly efficient anti-bacterial effect of nano silver( NS) were utilized to prepare SF / NS composite film with antibacterial property.The structure and property of the film were characterized.The results showed that the structure of SF in the film was mainly silk I.SF in the film was almost insoluble in water.The tensile strength of film with NS was significantly lower than that of films without NS.When the addition of NS was within the range of 0%-0.6%,the elongation at break had no significant difference.The antibacterial rate of the film on staphylococcus aureus and escherichia coli increased with the amount of NS.The minimum amount of NS in the film was 0.1% and the maximum amount was 0.5%.