Strong and tough reduced graphene oxide/polyurethane composite film

Abstract

Abstract A GCFS consisting of reduced graphene oxide and aqueous polyurethane was prepared by vacuum filtration and chemical reduction. The PU crosslinks with the RGO sheets through hydrogen bonding and covalent bonding, which not only reduces the voids between the RGO sheets but also leads to an increased degree of ordering of the RGO sheets. The RGO/PU film demonstrates a tensile strength of 556 ± 27 MPa, which is 1.94 times higher than that of RGO, and the toughness was up to 34.01 ± 1.70 MJ/m 3 , which is 3.09 times higher than that of RGO. With such excellent properties, the RGO/PU films have great potential in aerospace and artificial muscles.