Abstract
To minimize degradation reactions occurring at the same time as surface modification reactions, the surface modification of poly(aryl ether ether ketone) (PEEK) film surfaces by pulsed oxygen plasma was investigated. Oxygen radicals and ion and electron concentrations in the oxygen plasma were calculated as a function of the elapsed time after the discharge was turned off. The pulsed plasmas showed a low contact angle compared to those treated with continuous plasma, though the weight loss of the pulsed plasma irradiated sample decreased compared to those irradiated by continuous plasma. X-ray photoelectron spectra (XPS) measurements indicated that oxygen groups were formed on the PEEK surface.
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