X-ray photoelectron spectroscopic studies of carbon fiber surfaces. 11. Differences in the surface chemistry and bulk structure of different carbon fibers based on poly(acrylonitrile) and pitch and comparison with various graphite samples

Journal Article · · Chemistry of Materials; (USA)

DOI:https://doi.org/10.1021/cm00009a020· OSTI ID:6949871

Xie, Yaoming; Sherwood, P M.A. ^[1]

---

1. Kansas State Univ., Manhattan (USA)

X-ray photoelectron spectroscopy has been used to monitor the surface chemistry of untreated carbon fibers based on PAN and pitch, a pitch fiber anodically oxidized in 1 M HNO{sub 3}, and three different graphite materials. Differences were found in the core and valence-band region indicating a highly graphitic and almost unoxidized nature for untreated pitch-based fibers. X-ray powder diffraction was used to study the bulk structures of these materials, and the Du Pont E-120 pitch-based fiber was found to have the most graphitic structure of all the carbon fibers examined. The anodic oxidation of the pitch fiber changed both surface and bulk structure, producing mainly one type of oxygen-containing group on the surface.

• OSTI ID: 6949871
• Journal Information: Chemistry of Materials; (USA), Vol. 2:3; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON FIBERS
PHOTOELECTRON SPECTROSCOPY
SURFACE PROPERTIES
COMPOSITE MATERIALS
DATA ANALYSIS
MEASURING INSTRUMENTS
MEASURING METHODS
X-RAY DIFFRACTION
COHERENT SCATTERING
DIFFRACTION
ELECTRON SPECTROSCOPY
FIBERS
MATERIALS
SCATTERING
SPECTROSCOPY
360602* - Other Materials- Structure & Phase Studies