▎ 摘　　要

Electronic textiles or e-textiles have become a hot topic considering the future era of wearable electronics that are expected to replace currently available non-flexible devices. Among various methods, coating carbon-based conductive fillers on the flexible fibrous surface seems to be a promising method for e-textile and many other applications. Graphene is the top candidate among other carbon forms owing to its exceptional properties and nontoxicity. The functional groups present on the fibers surface has a significant impact on the adhesion and bonding of graphene sheets, which in turn have a profound effect on forming conductive networks that lead to improved performance of the end product. In this article, graphene oxide (GO) is coated on unmodified and chemically surface modified with positively (amine) and negatively surface (alkali) charged polyester non-woven fabrics. The facile dip-coating technique was used to coat the fabrics, surface bonding, morphology, wettability, and thermal properties of the modified surfaces were thoroughly investigated. The study revealed that modification of the fibre surface leads to increased coating uptake, improved thermal properties and uniform coating coverage. The polyester modified with sodium hydroxide exhibited the best result with an improvement of 30 % for uptake and 15 % for thermal conductivity as compared with the untreated polyester demonstrating the importance of functional groups on the surface of the fibers.