Use of surface signal enhancement techniques in x-ray photoelectronic studies of carbon-fibre surfaces. Technical report

Technical Report · Sun Oct 01 04:00:00 EDT 1989

OSTI ID:5470150

Jones, C

There have been many studies of the chemical changes induced by oxidative treatments of carbon fiber surfaces with the attempt to understand the nature of fiber/matrix interaction in carbon fiber/epoxy composites C.G. 1-5. Most of the more successful studies utilized x-ray photoelectron spectroscopy for chemical groups identification. However, there are many conflicting reports on the amount and type of oxygen and nitrogen functionally induced by similar surface treatments. This arises because most commercially successful treatments only alter the first few atomic layers of the fiber itself and signals from these functional groups are swamped by the graphitic backbone in the carbon's spectrum. It will be shown here, that by using the small spot and small acceptance angle features of the PHI 5400 x-ray photoelectron spectrometer signals from these surface features can be enhanced dramatically. (This technique is well established for surface signal enhancement for flat metal and polymer samples but has not been exploited for fiber surface studies.).

• Research Organization: National Center for Composite Materials Research, Urbana, IL (United States)
• OSTI ID: 5470150
• Report Number(s): AD-A-233761/6/XAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
CARBON
CARBON FIBERS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COMPOSITE MATERIALS
ELECTRON SPECTROSCOPY
ELEMENTAL MINERALS
ELEMENTS
EPOXIDES
FIBERS
GRAPHITE
INTERFACES
MATERIALS
METALS
MINERALS
NITROGEN
NONMETALS
OPTIMIZATION
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
OXIDATION
OXYGEN
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOTOELECTRON SPECTROSCOPY
POLYMERS
RESINS
SAMPLING
SIGNALS
SPECTROSCOPY
SURFACE FINISHING
SURFACE PROPERTIES
SURFACE TREATMENTS
SURFACES