Issue 8, 2025
From the journal:

Green Chemistry

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

Y. Justin Lim, ORCID logo ‡a   Zehan Yu, ORCID logo ‡b   Valeriy Cherepakhin, ORCID logo a   Travis J. Williams ORCID logo *a  and  Steven R. Nutt*b  

* Corresponding authors

a Loker Hydrocarbon Research Institute, Wrigley Institute of Environmental Studies, and Department of Chemistry, University of Southern California, 837 Bloom Walk, Los Angeles, California, USA
E-mail: travisw@usc.edu

b MC Gill Composites Center, Mork Family Department of Chemical Engineering and Material Science, University of Southern California, 3651 Watt Way, Los Angeles, California, USA
E-mail: nutt@usc.edu

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.

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

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Article information

DOI
https://doi.org/10.1039/D4GC05299D
Article type
Communication
Submitted
22 Oct 2024
Accepted
25 Nov 2024
First published
03 Dec 2024

Green Chem., 2025,27, 2184-2188

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

Y. J. Lim, Z. Yu, V. Cherepakhin, T. J. Williams and S. R. Nutt, Green Chem., 2025, 27, 2184 DOI: 10.1039/D4GC05299D

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