▎ 摘　　要

NOVELTY - Biodegradable oriented complex film with high gas barrier properties comprises a coating layer and a base layer, the coating layer has a thickness of 10-500 nm, and the coating layer contains a first two-dimensional material oriented parallel to the surface of the coating layer. The base layer is a biodegradable film with a thickness of 1-300 mu m, and the base layer contains a second two-dimensional material oriented parallel to the surface of the base layer. The first two-dimensional material is composed of graphene, graphene oxide, reduced graphene oxide, chemically modified graphene, boron nitride, boron phosphide, montmorillonite, kaolin, mica, vermiculite, transition metal carbide, transition metal nitrides, transition metal sulfides, two-dimensional metal organic framework materials, and/or two-dimensional covalent organic framework materials. USE - The biodegradable oriented complex film is useful in agricultural, electronic, electric appliance, building, food, medical and so on coating and packaging. ADVANTAGE - The biodegradable oriented complex film has high gas barrier properties, high oxygen and water vapor barrier properties, and excellent barrier properties.