Biodegradable antibacterial film and preparation method thereof

The invention discloses a biodegradable antibacterial film and a preparation method thereof, and belongs to the field of biodegradable antibacterial film preparation, polyvinyl alcohol, nano cellulose crystal and tea polyphenol are used as main film preparation materials, glycerol is used as a plasticizing modifier, glutaraldehyde is used as a cross-linking agent, and the biodegradable antibacterial film is prepared by a one-step method. The biodegradable antibacterial film is prepared by adopting a solution tape casting method. The prepared film has good mechanical properties, water resistance, light transmittance, moisturizing performance, antibacterial performance and full-biodegradation performance, and solves the problems that antibacterial films on the market are slow in degradation rate and cannot be completely degraded, and the problems that environmental pollution is caused in the degradation process of synthetic antibacterial agents and the like. 本发明公开了一种可生物降解抗菌薄膜及其制备方法，属于生物降解抗菌薄膜制备领域，以聚乙烯醇、纳米纤维素晶体和