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Fiber and monomer recovery from an amine-cured epoxy composite using molten NaOH–KOH

Year: 2024
Type: article
Abstract: We report a rapid route to reclaim carbon fiber (CF) fabric and monomeric chemicals from amine-epoxy CF-reinforced polymer (CFRP) composites. We use a reaction that occurs in molten NaOH-KOH eutectic to selectively cleave aryl ether and amine linkages, which involves two temperature-dependant mechanisms. Bisphenol-A is isolated in up to quantitative yields, and recovered CF fabric is remanufactured into 2nd-generation CFRPs.
DOI: 10.1039/d4gc05299d
Language: English
Open Access status: green
Funders: National Science Foundation, University of Southern California, National Institutes of Health, National Center for Research Resources, Division of Civil, Mechanical and Manufacturing Innovation, Division of Chemistry
Awards: Collaborative Research: Acquisition of a 400 MHz NMR at the University of Southern California, G1638050999, G2278757305, G3306068231, G3634295717, G4040018596, MRI: Acquisition of a 600 Mhz NMR Spectrometer at the University of Southern California, G4638970210, G5366184946, BRITE Pivot: Remanufacturing Post-Consumer Carbon Fiber Composite Materials, MRI: Acquisition of an X-ray Diffractometer at the University of Southern California, Acquisition of a 500 MHz NMR Spectrometer for the University of Southern Calif, FMSG: Eco: Teambuilding, Training, Manufacturing Efficiency and Recycling for Sustainable Polymer Composites
OpenAlex ID: W4404908170
FWCI: 2.699
Cites: 22
Cited by: 20
Related to: 10