X-ray photoelectron spectroscopic studies of carbon fiber surfaces. 22. Comparison between surface treatment of untreated and previously surface-treated fibers
Yq. Wang et al., X-ray photoelectron spectroscopic studies of carbon fiber surfaces. 22. Comparison between surface treatment of untreated and previously surface-treated fibers, CHEM MATER, 12(4), 2000, pp. 1100-1107
IM7 PAN-based carbon fibers, with a proprietary surface treatment applied b
y the manufacturer, were analyzed by X-ray photoelectron spectroscopy (XPS)
. The surface treatment applied by the manufacturer was removed by heating
in a vacuum. The fibers detreated in this manner were then subjected to ele
ctrochemical treatment. The electrochemical behavior of the as-received fib
ers and detreated fibers were measured and analyzed. When the same electroc
hemical treatment was applied to the as-received fibers with their commerci
al surface treatment intact, a different surface chemistry was observed for
the detreated fibers. This study shows that the surface chemistry of treat
ed fibers depends closely on the initial surface chemistry of the fibers an
d its detreatment. This work shows the importance of using untreated or det
reated fibers as precursors for applying reproducible surface treatment so
that one can understand and control the surface chemistry of fibers and the
ir interfacial interaction in composites.