Graphene oxide as a promising nanofiller for polymer composite

In recent years, graphene oxide/polymer composites have been rapidly developed. Among numerous fillers, graphene oxide (GO) has multiple excellent properties. Its special two-dimensional structure makes it anisotropic with multiple properties that can effectively improve the overall performance of polymers, which makes it a promising candidate for polymer modification research. GO/polymer composites have been widely investigated in many fields, and many researches have shown that modulating the amount of GO and the functional groups on its surface can achieve significant improvement of polymer properties. Therefore, from the perspective of developing new high-performance polymer composites, a multidimensional understanding of GO nanofillers and their role in polymer modification is desired. This review presents the preparation methods of GO and GO/polymer composites, selectively reviewing the latest techniques for modulating the mechanical, electrical, electrochemical, thermal, adsorption, and barrier properties of polymers by GO. Finally, the development of GO/polymer composites is summarized and prospected.