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Article Dans Une Revue Applied Surface Science Année : 2022

Carbon fibre fluorination: Surface and structural properties

Jean-Charles Agopian
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Olivier Téraube
Karine Charlet
Elodie Petit
Nicolas Batisse
Marc Dubois
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Résumé

Knowing that carbon fibre reinforced polymers are sensitive to moisture through their interphases, carbon fibres sized with Bisphenol A diglycidyl ether were fluorinated under a N2/F2 atmosphere, which confers them a hydrophobic behaviour, as highlighted by wettability measurements. Low fluorination temperatures (< 230°C) lead to a sizing perfluorination and even overfluorination without carbon fibre fluorination, while higher temperatures (> 250°C) result in a carbon lattice fluorination with a complete desizing of the fibre through decomposition, that has been evidenced through X-Ray Diffraction and Raman spectroscopy studies. For both fluorination mechanisms, 19F Nuclear Magnetic Resonance, X-Ray Photoelectron and infrared spectroscopies have been used to study the nature of fluorine bonds. Scanning Electron Microscope and Energy-Dispersive X-Ray Spectroscopy have evidenced a core–shell structure for the fluorinated fibres with a fibre degradation at the highest temperatures, also highlighted by tensile tests, Atomic Force Microscopy and Electron Paramagnetic Resonance.
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Dates et versions

hal-04497941 , version 1 (26-03-2024)

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Jean-Charles Agopian, Olivier Téraube, Karine Charlet, Samar Hajjar-Garreau, Elodie Petit, et al.. Carbon fibre fluorination: Surface and structural properties. Applied Surface Science, 2022, 595, pp.153561. ⟨10.1016/j.apsusc.2022.153561⟩. ⟨hal-04497941⟩
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