The effect of low power nitrogen and ammonia plasmas on carbon fibre surfaces has been studied using X-ray photoelectron spectroscopy(XPS) and scanning electron microscopy (SEM). A comparison is made between two polyacrylonitrile based fibres and a pitch based fibre. Grazing angle techniques have been exploited to probe only the first 12-15A of the fibre surface. Plasma treatments were carried out in an insitu plasma treatment cell which was attached to a PHI 5400 X-ray photoelectron spectrometer enabling the immediate effects of the plasma to be studied before the treated surface was exposed to air.
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Jones, C., Sammann, E. The Effect of Low Power Ammonia and Nitrogen Plasmas on Carbon Fibre Surfaces. MRS Online Proceedings Library 171, 407–412 (1989). https://doi.org/10.1557/PROC-171-407