scholarly journals Optical Measurements of Atmospheric Pressure Direct Current He/H2 Microplasma in Open Air for Surface Modification

2014 ◽  
Vol 4 (3A) ◽  
pp. 19-27
Author(s):  
C. Oliveira ◽  
F. M. Freitas ◽  
G. J. P. Abreu ◽  
M. P. Gomes ◽  
K. G. Grigorov ◽  
...  
Keyword(s):  
Surface Modification ◽  
Direct Current ◽  
Atmospheric Pressure ◽  
Optical Measurements

scholarly journals Surface modification of PMMA polymer and its composites with PC61BM fullerene derivative using an atmospheric pressure microwave argon plasma sheet

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andrzej Sikora ◽  
Dariusz Czylkowski ◽  
Bartosz Hrycak ◽  
Magdalena Moczała-Dusanowska ◽  
Marcin Łapiński ◽  
...  
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Chemical Composition ◽  
Water Contact Angle ◽  
Plasma Sheet ◽  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Fullerene Derivative ◽  
Water Contact ◽  
Pmma Polymer

AbstractThis paper presents the results of experimental investigations of the plasma surface modification of a poly(methyl methacrylate) (PMMA) polymer and PMMA composites with a [6,6]-phenyl-C61-butyric acid methyl ester fullerene derivative (PC61BM). An atmospheric pressure microwave (2.45 GHz) argon plasma sheet was used. The experimental parameters were: an argon (Ar) flow rate (up to 20 NL/min), microwave power (up to 530 W), number of plasma scans (up to 3) and, the kind of treated material. In order to assess the plasma effect, the possible changes in the wettability, roughness, chemical composition, and mechanical properties of the plasma-treated samples’ surfaces were evaluated by water contact angle goniometry (WCA), atomic force microscopy (AFM), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS). The best result concerning the water contact angle reduction was from 83° to 29.7° for the PMMA material. The ageing studies of the PMMA plasma-modified surface showed long term (100 h) improved wettability. As a result of plasma treating, changes in the samples surface roughness parameters were observed, however their dependence on the number of plasma scans is irregular. The ATR-FTIR spectra of the PMMA plasma-treated surfaces showed only slight changes in comparison with the spectra of an untreated sample. The more significant differences were demonstrated by XPS measurements indicating the surface chemical composition changes after plasma treatment and revealing the oxygen to carbon ratio increase from 0.1 to 0.4.

Surface modification of aramid fiber by air DBD plasma at atmospheric pressure with continuous on-line processing

2008 ◽  
Vol 202 (24) ◽  
pp. 6029-6033 ◽  
Author(s):  
Min Xi ◽  
Yu-Liang Li ◽  
Shu-yong Shang ◽  
Dai-Hong Li ◽  
Yong-Xiang Yin ◽  
...  
Keyword(s):  
Surface Modification ◽  
Atmospheric Pressure ◽  
Aramid Fiber ◽  
Dbd Plasma ◽  
On Line

Microsecond pulse driven Ar/CF4 plasma jet for polymethylmethacrylate surface modification at atmospheric pressure

2015 ◽  
Vol 328 ◽  
pp. 509-515 ◽  
Author(s):  
Ruixue Wang ◽  
Cheng Zhang ◽  
Xiong Liu ◽  
Qing Xie ◽  
Ping Yan ◽  
...  
Keyword(s):  
Surface Modification ◽  
Atmospheric Pressure ◽  
Plasma Jet ◽  
Microsecond Pulse
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