▎ 摘　　要

NOVELTY - A modified cellulose high-barrier film comprises 1-4 pts. wt. modified montmorillonite, 1-3 pts. wt. modified graphene oxide, and 93-98 pts. wt. modified cellulose nanocrystals. USE - Modified cellulose high-barrier film. ADVANTAGE - The modified cellulose high-barrier film has high bending strength, hydrophobic property and elastic modulus. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the modified cellulose high-barrier film, which involves: (A) adding modified montmorillonite and modified cellulose nanocrystals to a mixed solvent of distilled water and acetone in a volume ratio of 1:(3-5), subjecting the solution to ultrasonic dispersion treatment at 30-40 kHz for 1-2 hours, then adding modified graphene oxide, and carrying out ultrasonic treatment for 2-3 hours; and (B) evenly coating the solution on a glass plate, controlling the film thickness at 2-4 um, naturally volatilizing and drying, removing the film, immersing in ethanol solvent for 3-5 hours, taking out the film and drying.