Modification of X-ray excited photoelectron and C KVV Auger spectra during radiative carbonization of poly(vinylidene fluoride)
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Date
2007Author
Chebotaryov, S.S.
Volegov, A.A.
Pesin, L.A.
Evsyukov, S.E.
Moskvina, N.A.
Gribov, I.V.
Kuznetsov, V.L.
Песин, Леонид Абрамович
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Modifications of the photoelectron and C KVV Auger spectra during the long-term surface degradation of partially crystalline PVDF under simultaneous soft X-ray and electron followed by ion irradiation are reported. Deep radiative carbonization brings about the formation of carbynoid structures (chain-like carbon) in the surface, while the number of interchain cross-links is insignificant. As a result, the shape of the electron emission spectra of carbon in the carbonized sample essentially differs from that of graphite and PVDF. The ion bombardment of the carbonized sample destroys one-dimensional structure due to the formation of cross-links. Thus, carbon atoms transit into sp2-hybrid state and, therefore, the photoelectron and Auger spectra show features characteristic for microcrystalline graphite