PVA composite antibacterial film and preparation method thereof

The invention discloses a PVA composite antibacterial film and a preparation method thereof, the PVA composite antibacterial film comprises PVA resin, a modified plasticizer and an antibacterial agent, and the antibacterial agent comprises an aldehyde antibacterial agent and an acid antibacterial agent. Wherein due to the addition of the modified plasticizer, the dispersity of the plasticizer in a PVA matrix is improved, the plasticizing effect of the plasticizer is improved, meanwhile, due to the synergistic effect of the aldehyde antibacterial agent and the acid antibacterial agent, the antibacterial or sterilizing effect of the plasticizer is further enhanced, and the thermal stability, the water resistance, the mechanical property, the water vapor barrier property and the antibacterial property of the film are improved; the plasticizer and the antibacterial agent which are required by the plastic packaging film are safe, the concept of being recyclable, recoverable, degradable and environment-friendly is