Using redox active molecules to build multilayered architecture on carbon fibers and the effect on adhesion in epoxy composites

Carbon fibres with redox-active surface functionalities have shown potential applications in environmental remediation, and as burgeoning materials for structural batteries super capacitors. In this work we describe the tethering of anthraquinone, capable a reversible 2 electron transfer aqueous medium, to carbon fibre surface, corresponding effect on interfacial adhesion. The anthraquinone alone results >150% improvement shear strength redox activity is preserved. Further this, then use conductive film means grow an acrylic acid polymer top base layer, characterized by water contact angle, infrared spectroscopy, depth-profiling X-ray photoelectron spectroscopy. This outermost layer imparts additional benefit fibre-to-matrix adhesion preserves modified fibers. demonstrates ability dual component covalently-attached sizings fiber without compromising inherent benefits underlying