Chemical modification of carbon fiber surfaces

• Published in: Carbon (New York) Vol. 40; no. 5; pp. 735 - 741
• Main Authors: Severini, Febo, Formaro, Leonardo, Pegoraro, Mario, Posca, Luca
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.01.2002; Elsevier Science
• Subjects: A. Carbon fibers; Applied sciences; B. Chemical treatment; Building materials. Ceramics. Glasses; C. Electrochemical analysis; Ceramic and carbon fibers; Ceramic industries; Chemical industry and chemicals; Composites; D. Surface properties; Exact sciences and technology; Forms of application and semi-finished materials; Polymer industry, paints, wood; Technical ceramics; Technology of polymers; A. Carbon fibers; B. Chemical treatment; C. Electrochemical analysis; D. Surface properties; Ammonia; Interface properties; Chemical modification; 2,5-Furandione(2,5-dihydro); Epoxy resin; Surface properties; Aqueous solution; Experimental study; Composite material; Surface treatment; Carbon fiber
• ISSN: 0008-6223; 1873-3891
• DOI: 10.1016/S0008-6223(01)00180-4

Surface properties of a high modulus unsized carbon fiber modified by aqueous ammonia were studied. Basic groups were detected by potentiometric titration in addition to the pristine acid groups in untreated fiber. Surface composition of fiber modified with maleic anhydride or tetracyanoethylene was determined by XPS analysis. The modified fiber interaction with epoxide resin was studied by the Single Fiber Composite test. Ammonia treated fiber showed an improvement of the fiber/matrix stress transfer.