Reversible surface modification for carbon fibers by ferrocene-based surfactants

The results showed that the FDDA could be electrochemically adsorbed onto or desorbed from CFs, indicating a reversible surface modification on CFs. The FDDA adsorption isotherm was attributed to multi-molecular layers, controlled dominantly by non-electrostatic interactions.

Furthermore, the effects of FDDA-modification on CF/epoxy interfacial properties were evaluated by a single-filament fragmentation test. Compared with the un-modified CFs, the FDDA-modified CFs allowed a significantly improved interfacial adhesion property.