Abstract
The application of X-ray absorption spectroscopy (NEXAFS) in surface analysis of polymers is demonstrated by means of selected examples. High resolution NEXAFS spectra of poly(ethylene), poly(butadiene) and poly(styrene) are presented. The effect of oxygen plasma treatment on the surface of polypropylene foils was investigated. It is shown that angle resolved NEXAFS spectroscopy can be used to observe preferential orientations of segments of macromolecules at the surface of a poly(ethylene terephthalate) foil. Finally, the formation of a polymer-metal interface was observed in a model study of chromium evaporated onto a poly(bisphenol-A-carbonate) film surface. NEXAFS spectroscopy and XPS are complementary tools in surface analysis of polymers. NEXAFS polymer spectra can be used in parallel electron energy loss spectroscopy (PEELS) to control for electron beam damage.
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