▎ 摘　　要

2D Carbon nanomaterials (graphene oxide sheets) were covalently grafted with keratin biostructures obtained from chicken feather under a redox reaction in acidic medium under two different conditions. The dispersion behaviour in solution of graphene oxide sheets modified with keratin was observed in water and hexane. The quantification of keratin grafting was done using the Bradford assay. Characterization of graphene oxide sheets and keratin grafted graphene sheets was achieved by FT-IR and Raman spectroscopy in order to corroborate the grafting; elemental analysis was realized in modified graphene to verify elements like Sulfur and Nitrogen typical in this protein. HRTEM, TEM and AFM complement the information showing that grafted graphene present different features and more thickness than graphene oxide. Keratin grafted graphene could be useful to diversify the properties of graphene. Compatibilization of graphene with polymers and the development of nanobiocomposites or biocompatibilization of these sheets are an opportunity field of modified graphene with natural polymers.