Silver nanoparticle-containing bacterial cellulose membrane and preparation method thereof

The invention relates to a silver nanoparticle-containing bacterial cellulose membrane and a preparation method thereof. Silver nanoparticles in the bacterial cellulose membrane are attached to the microfiber surface of a three-dimensional network structure of the bacterial cellulose membrane, and the silver nanoparticles are in an amount which is 0.1 to 15 percent of the total weight of the cellulose membrane and have the particle size of between 8 and 50nm. The preparation method comprises the following steps of: soaking the bacterial cellulose membrane in silver salt solution at room temperature for 10 minutes to 5 hours and taking the soaked membrane out; cleaning the surface of the bacterial cellulose membrane by using distilled water; irradiating by an ultraviolet radiation method for 0.5 to 6 hours to obtain a silver nanoparticle-containing bacterial cellulose wet membrane; and performing dehydration treatment to obtain the silver nanoparticle-containing bacterial cellulose membrane. The bacterial cellulose membrane has high bacteria resistance, high air permeability, high water-holding capacity and controllable moisture content and is suitable to be used as a trauma medical dressing; and in the invention, a chemical reduction reagent is not required to be added, an environment-friendly and safe process condition is realized, and equipment is simple and pollution-free.