Abstract
AbstractA preliminary investigation of the identification of peroxy‐features at polymer surfaces by ESCA is described. Oxidation of a hydrocarbon polymer in the effluent of a singlet molecular oxygen generator, based on a microwave discharge in oxygen, produces surfaces rich in peroxy‐features. By comparison with experimental and theoretical studies of model systems these features can be identified in ESCA spectra by their characteristic O1s binding energies. The oxygen atoms in the peroxy‐linkage have essentially the same binding energy, which is within a narrow range of 534.0 eV for simple peroxides and hydroperoxides and a narrow range of 535.2 eV for peroxy‐features in more highly oxygenated environments; for example, peracids and peresters. Peroxy‐linkages decompose rather rapidly under the typical x‐ray flux used in the ESCA experiment.
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