title: Surface characteristics of carbon fibers modified by direct oxyfluorination.
abstract: The effect of oxyfluorinated conditions on the surface characteristics of carbon fibers was investigated. Infrared (IR) spectroscopy results indicated that the oxyfluorinated carbon fibers showed carboxyl/ester groups (CO) at 1632 cm(-1) and hydroxyl groups (OH) at 3450 cm(-1) and had a higher OH peak intensity than that of the fluorinated ones. X-ray photoelectron spectroscopy (XPS) results for the fibers also showed that oxyfluorination introduced a much higher oxygen concentration onto the fiber surfaces than fluorination with F(2) only. Additionally, contact-angle results showed that the surface was better wetted by following oxyfluorination and that the polarity of the surface was increased by increasing the oxyfluorination temperature.
authors.affiliation: Department of Chemistry, Inha University, 253, Nam-gu, Incheon 402-751, South Korea.
authors.forename: Min-Kang
authors.initials: MK
authors.lastname: Seo
authors.forename: Soo-Jin
authors.initials: SJ
authors.lastname: Park