Data for: Effects of Air Nonequilibrium Atmospheric-Pressure Plasma Jet Treatment on Characteristics of Polypropylene Film Surfaces

The inset shows the Ar plasma spectrum magnified at the UV range of 280−400 nm in wavelength. Fig. 6. Contact angles of PP film surfaces treated with air and Ar plasma jets, as a function of treatment time.

In each figure, the contact angle at zero treatment time corresponds to that of untreated PP film surface. Fig. 7. XPS spectra of C 1s regions of (a) untreated PP film surface, (b) 3 l/min air plasma-treated surface, (c) 10 l/min air plasma-treated surface, and (d) 3 l/min Ar plasma-treated surface, at a treatment time of 1 min and a nozzle-to-sample distance of 1 mm.

(e) Comparison between chemical compositions of the plasma-treated surfaces. Fig. 8. XPS spectra of O 1s regions of (a) 3 l/min air plasma-treated surface, (b) 10 l/min air plasma-treated surface, and (c) 3 l/min Ar plasma-treated surface, at a nozzle-to-sample distance of 1 mm.

(d) Comparison between the ratios of O=C to O−C of the plasma-treated surfaces. Fig. 9. SEM images of PP film surfaces treated with 3 and 10 l/min air plasma jets and with 3 l/min Ar plasma jet at a nozzle-to-sample distance of 1 mm.

Fig. 10. Temperatures of PP film surfaces treated with air and Ar plasma jets, as a function of treatment time.