Montmorillonite modified cellulose high-barrier composite film and preparation method thereof

The invention relates to the technical field of cellulose, and discloses a montmorillonite modified cellulose high-barrier composite membrane which is prepared by the steps of carrying out rapid click reaction on alkynyl of a side chain of cellulose and azide groups of azide functionalized montmorillonite, and organically combining montmorillonite with hydroxypropyl cellulose through covalent bond bridging action, so that the interfacial compatibility of montmorillonite nano particles and cellulose is improved, the agglomeration phenomenon of montmorillonite agglomeration is avoided, montmorillonite is highly dispersed in a hydroxypropyl cellulose membrane matrix to form a continuous nano lamellar structure, and the diffusion path of oxygen and other gases is improved. Meanwhile, the superhigh specific surface area and the complex nanostructure have a good adsorption effect on oxygen, excellent oxygen barrier performance is shown, azide functionalized montmorillonite serves as a cross-linking site to be coval