Preparation and Properties of Graphene/ODA-PMDA-NTADA Copolyimide Nanocomposites Based onKH550-modification

Abstract

In this study, KH550-modified graphene/ODA-PMDA-NTADA copolyimide nanocomposites were successfully made in an organic medium using KH-550 chemically modified reduced graphene oxide (rGO-NH2) as a multi-functional comonomer combinied with commercially available ODA, PMDA, and NTADA monomers, and their dispersive, morphological, thermal, viscous, conductive properties were investigated. Compared to pure PI, the dispersion compatibility, thermal characteristics and electrical conductivity of the produced nanocomposites were improved significantly. The improved rGO/PI nanocomposites showed more than 20 °C and 10 °C increase of Td5% and Td10% values respectively. This research demonstrates a facile and efficient method for creating homogeneous and multi-functional PI-based engineering materials and advanced functional materials.