| abstract |
A nano composite preservative film, a preparation method and application thereof belong to the technical field of composite films. The nano composite preservative film comprises a base film and an active film covering the surface of the base film, wherein the base film comprises 70-80% of polyethylene, 5-10% of nano calcium carbonate, 0.1-3% of dispersing agent, 4-8% of antibacterial agent, 3-6% of polyvinylpyrrolidone and 2-5% of polyisobutylene by mass; the active membrane is prepared from the following components in a mass ratio of 10-16: 5-8: 2-4 of polyvinyl alcohol, ethyl orthosilicate and sodium alginate. The nano composite preservative film provided by the invention has excellent mechanical properties, can inhibit the change of the pH value of a wrapped material, and avoids accelerated deterioration of the material due to the change of the pH value. In addition, the invention also relates to a preparation method and application of the nano composite preservative film. |