本发明属于氧化石墨烯材料、生物基材料及自修复涂层领域，涉及一种氧化石墨烯改性的生物基微胶囊及其制备方法与应用。本发明的生物基微胶囊为微胶囊A和/或微胶囊B；微胶囊A和微胶囊B均包括囊壁、囊芯和囊壁外包层；微胶囊A和微胶囊B的囊壁材料相同，为聚甲基丙烯酸甲酯、聚砜或聚乳酸，微胶囊A和微胶囊B的囊壁外包层材料相同，为生物基表面活性剂和接枝氨基分子的GO；微胶囊A的囊芯包括生物基固化剂和接枝生物基固化剂的GO的组合物；微胶囊B的囊芯包括生物基环氧树脂和接枝生物基环氧树脂的GO的组合物。本发明制得的微胶囊在赋予涂层自愈合性能的同时，可以提高生物基涂层本征阻隔性能，提高涂层防腐蚀能力。

The present invention belongs to the field of graphene oxide materials, bio based materials, and self repairing coatings, and relates to a bio based microcapsule modified by graphene oxide, a preparation method, and applications thereof. The bio based microcapsules of the present invention are microcapsules A and/or B; Both microcapsules A and B include the capsule wall, core, and outer layer of the capsule wall; The wall materials of microcapsules A and B are the same, which are polymethyl methacrylate, polysulfone, or polylactic acid. The outer layer materials of microcapsules A and B are the same, which are bio based surfactants and GO grafted with amino molecules; The core of microcapsule A comprises a combination of a bio based curing agent and a GO grafted with a bio based curing agent; The core of microcapsule B includes a combination of bio based epoxy resin and GO grafted with bio based epoxy resin. The microcapsules prepared by the present invention not only endow the coating with self-healing performance, but also improve the intrinsic barrier performance of the bio based coating and enhance the corrosion resistance of the coating.