Effect of carbon fiber surface modification on their interfacial interaction with polysulfone

• Published in: Results in physics Vol. 15; p. 102634
• Main Authors: Chukov, Dilyus, Nematulloev, Sarvarkhodzha, Torokhov, Valerii, Stepashkin, Andrey, Sherif, Galal, Tcherdyntsev, Victor
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2019; Elsevier
• Subjects: Carbon fibers; Functional groups; Polysulfone; Surface modification; Surface modification; Carbon fibers; Polysulfone; Functional groups
• ISSN: 2211-3797; 2211-3797
• DOI: 10.1016/j.rinp.2019.102634

[Display omitted] •Polysulfone was reinforced with carbon fibers by the polymer solution impregnation.•Thermal oxidation results in the functional groups formation on carbon fibers surface.•Carbon fibers surface oxidation was used to improve fiber-to-polymer interaction.•Thermal oxidation of carbon fibers surface improves composites mechanical properties. Polysulfone-based composites reinforced with carbon fibers (CF) were obtained by the polymer solution impregnation method. The effect of carbon fibers surface modification on the fiber-matrix interaction in the composites was studied. It was found that thermal oxidation has a strong effect on the chemical composition and functional groups on the carbon fibers surface. The X-ray photoelectron spectroscopy showed that the surface modification at temperatures up to 500 °C results in the formation of hydroxyl COH, ethereal COC, carboxyl COOH, carbonyl CO and epoxy groups on the CF surface. A considerable increase in the interlaminar shear strength of the composites reinforced with modified fibers was observed.