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

Published: 31-03-2020| Version 1 | DOI: 10.17632/4768txk2v5.1
Contributor:
Retsuo Kawakami

Description

Fig. 3. (a) Waveform of the voltage applied to the twisted wires and (b)−(e) waveforms of discharge currents following into the cylinder electrode and the sample stage, IC and IS, for 3 and 10 l/min air plasma jets at a nozzle-to-sample distance of 1 mm. Fig. 4. RMS discharge currents flowing into the cylinder electrode and the sample stage, IC and IS, for air and Ar plasma jets generated at various nozzle-to-sample distances, as a function of gas flow rate. Fig. 5. Comparison between the spectra of light emitted from (a) air and (b) Ar plasma jets. 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.