Journal
NEW CARBON MATERIALS
Volume 38, Issue 5, Pages -Publisher
ELSEVIER
DOI: 10.1016/S1872-5805(23)60728-0
Keywords
Carbon fibers; FDDA; Reversible modification; Interfacial properties
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Surfactant modification of carbon fibers improves the interfacial adhesion between the fibers and matrix. The modified fibers show enhanced interfacial properties without compromising their tensile strength. This method offers a potential approach for preparing recyclable carbon fiber composites.
The surface of carbon fibers (CFs) was modified by a surfactant (ferrocenemethyl)dodecyldimethylammonium bromide (FDDA) to enhance the interfacial ashesion between the CFs and surrounding matrix. Results showed that it could be electrochemically desorbed by a potentiostatic electro-oxidation method. The FDDA adsorption isotherm was attributed to the formation of multi-molecular layers mainly by non -electrostatic interactions. The adsorption and desorption of FDDA on the CFs have little effect on their tensile strength. The effects of FDDA modification on the interfacial properties of CF/epoxy composites were evaluated by a single-filament fragmentation test. Compared with the un-modified CFs, the FDDA-modified ones had significantly improved interfacial adhesion properties in the composites. This method provides a potential approach for preparing recyclable CF/resin composites.
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