Surface analysis of groundwood paper treated by diffuse coplanar surface barrier discharge (DCSBD) type atmospheric plasma in air and in nitrogen

Abstract Paper made of groundwood was surface treated by atmospheric plasma of the diffuse coplanar surface barrier discharge (DCSBD) type in air and in nitrogen. Changes in surface composition and chemical bonding of the constituent elements were studied by X-ray photoelectron spectroscopy (XPS), and alterations in wetting were examined by contact angle measurements. Air plasma treatment resulted in strong oxidation but no N incorporation, while the ratio of the area of the O1 component (binding energy 532.1 eV) to that of the O2 component (533.2 eV) decreased, reflecting an increase in the proportion of O in C–O type bonds. Nitrogen plasma treatment followed by exposure to the atmosphere resulted in a slight N incorporation (1.5 at.%) and oxidation even more intense than observed for air plasma treatment. The O1/O2 ratio slightly increased, implying more O in C=O type bonds. The time dependence of surface oxidation showed a local maximum at treatment time of approximately 2 s for both the air and nitrogen plasmas.

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Air plasma treatment of copper sheets using Diffuse Coplanar Surface Barrier Discharge

Thin Solid Films ◽

10.1016/j.tsf.2012.06.069 ◽

2012 ◽

Vol 520 (21) ◽

pp. 6561-6565 ◽

Cited By ~ 7

Author(s):

V. Prysiazhnyi ◽

M. Cernak

Keyword(s):

Plasma Treatment ◽

Barrier Discharge ◽

Surface Barrier ◽

Air Plasma ◽

Surface Barrier Discharge ◽

Air Plasma Treatment

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Enhancing the surface properties of linen by non-thermal atmospheric air-plasma treatment

Open Chemistry ◽

10.1515/chem-2015-0068 ◽

2014 ◽

Vol 13 (1) ◽

Cited By ~ 1

Author(s):

Orsolya Erzsébet Szabó ◽

Emília Csiszár ◽

András Tóth

Keyword(s):

Plasma Treatment ◽

Plasma Reactor ◽

Fiber Surface ◽

Surface Barrier ◽

Air Plasma ◽

Water Contact ◽

Atmospheric Air ◽

Polar Groups ◽

Surface Barrier Discharge ◽

Air Plasma Treatment

AbstractIn this research, a diffuse coplanar surface barrier discharge (DCSBD) type plasma reactor was used for the surface modification of raw linen fabric. Changes in physical properties and chemical composition of the fiber surface as well as color of the fabric were measured as a function of time of the atmospheric air plasma treatment. Furthermore, ageing of the effects created on the fiber surface by plasma treatment was also characterized in a period of 0-14 days elapsed after the plasma treatment. Significant differences were found between the properties of the raw and plasma treated linen fabrics, including increase of wettability, wickability, surface energy and O/C ratio, and decrease of water contact angle and deterioration of the waxy outer layer of the fibers. Most of the parameters depended on the time of plasma treatment (0–180 s). O/C ratio increased steadily with the increase of duration of the plasma treatment, which was explained by destruction of the waxy surface layer, creation of polar groups and exposure of cellulosic components. Most of the properties tested were found to be stable during two weeks of storage after the plasma treatment, indicating that the surface ‘topography’ created by plasma remained almost unaltered and the recovery of the etched waxy coverage of the fiber did not occur.

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A Study on the Effect of Ambient Air Plasma Treatment on the Properties of Methylammonium Lead Halide Perovskite Films

Metals ◽

10.3390/met9090991 ◽

2019 ◽

Vol 9 (9) ◽

pp. 991 ◽

Cited By ~ 5

Author(s):

Masoud Shekargoftar ◽

Jana Jurmanová ◽

Tomáš Homola

Keyword(s):

Plasma Treatment ◽

Band Gap ◽

Treatment Time ◽

Perovskite Solar Cells ◽

Ambient Air ◽

Surface Barrier ◽

Air Plasma ◽

Plasma Treatment Time ◽

Halide Perovskite ◽

Air Plasma Treatment

Organic-inorganic halide perovskite materials are considered excellent active layers in the fabrication of highly efficient and low-cost photovoltaic devices. This contribution demonstrates that rapid and low-temperature air-plasma treatment of mixed organic-inorganic halide perovskite film is a promising technique, controlling its opto-electrical surface properties by changing the ratio of organic-to-inorganic components. Plasma treatment of perovskite films was performed with high power-density (25 kW/m2 and 100 W/cm3) diffuse coplanar surface barrier discharge (DCSBD) at 70 °C in ambient air. The results show that short plasma treatment time (1 s, 2 s, and 5 s) led to a relatively enlargement of grain size, however, longer plasma treatment time (10 s and 20 s) led to an etching of the surface. The band-gap energy of the perovskite films was related to the duration of plasma treatment; short periods (≤5 s) led to a widening of the band gap from ~1.66 to 1.73 eV, while longer exposure (>5 s) led to a narrowing of the band gap to approx. 1.63 eV and fast degradation of the film due to etching. Surface analysis demonstrated that the film became homogeneous, with highly oriented crystals, after short plasma treatment; however, prolonging the plasma treatment led to morphological disorders and partial etching of the surface. The plasma treatment approach presented herein addresses important challenges in current perovskite solar cells: tuning the optoelectronic properties and manufacturing homogeneous perovskite films.

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The effects of dielectric barrier discharge atmospheric air plasma treatment to germination and enhancement growth of sunflower seeds

Journal of Physics Conference Series ◽

10.1088/1742-6596/1380/1/012148 ◽

2019 ◽

Vol 1380 ◽

pp. 012148 ◽

Cited By ~ 1

Author(s):

S Yawirach ◽

S Sarapirom ◽

K Janpong

Keyword(s):

Plasma Treatment ◽

Dielectric Barrier Discharge ◽

Barrier Discharge ◽

Sunflower Seeds ◽

Air Plasma ◽

Dielectric Barrier ◽

Atmospheric Air ◽

Air Plasma Treatment

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Effect of Dielectric Barrier Discharge Air Plasma Treatment on TiO2Thin Film Surfaces

Japanese Journal of Applied Physics ◽

10.1143/jjap.50.01be02 ◽

2011 ◽

Vol 50 ◽

pp. 01BE02 ◽

Cited By ~ 4

Author(s):

Retsuo Kawakami ◽

Masahito Niibe ◽

Toshiaki Fukudome ◽

Atsushi Takeichi ◽

Takeshi Inaoka ◽

...

Keyword(s):

Plasma Treatment ◽

Dielectric Barrier Discharge ◽

Barrier Discharge ◽

Air Plasma ◽

Dielectric Barrier ◽

Air Plasma Treatment

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Plasma Treatment of Aluminum Using a Surface Barrier Discharge Operated in Air and Nitrogen: Parameter Optimization and Related Effects

Plasma Science and Technology ◽

10.1088/1009-0630/15/8/15 ◽

2013 ◽

Vol 15 (8) ◽

pp. 794-799 ◽

Cited By ~ 1

Author(s):

V. Prysiazhnyi

Keyword(s):

Plasma Treatment ◽

Parameter Optimization ◽

Barrier Discharge ◽

Surface Barrier ◽

Surface Barrier Discharge

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Plasma Treatment of Thermally Modified and Unmodified Norway Spruce Wood by Diffuse Coplanar Surface Barrier Discharge

Coatings ◽

10.3390/coatings11010040 ◽

2021 ◽

Vol 11 (1) ◽

pp. 40

Author(s):

Zuzana Košelová ◽

Jozef Ráheľ ◽

Oleksandr Galmiz

Keyword(s):

Plasma Treatment ◽

Norway Spruce ◽

Position Control ◽

Barrier Discharge ◽

Light Exposure ◽

Contact Angles ◽

Surface Barrier ◽

Slight Reduction ◽

Gas Treatment ◽

Surface Barrier Discharge

This work deals with the treatment of wood surfaces by diffuse coplanar surface barrier discharge (DCSBD) generated at atmospheric pressure. The effect of the distance of the sample from the electrode surface and the composition of the working gas in the chamber was studied. Norway spruce (Picea abies) wood, both unmodified and thermally modified, was chosen as the investigated material. The change in the surface free energy (SFE) of the wood surface was investigated by contact angles measurements. Chemical and structural changes were studied using infrared spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Activation at a 0.15 mm gap from the electrode led in all cases to an increase in the SFE. The largest change in SFE components was recorded for wood thermally modified to 200 °C. At a 1 mm gap from the electrode increase of SFE occurred only when oxygen (O2) and argon (Ar) were used as working gas. Treatment in air and nitrogen (N2) resulted in an anomalous reduction of SFE. With the growing temperature of thermal modification, this hydrophobization effect became less pronounced. The results point out the importance of precise position control during the DCSBD mediated plasma treatment. A slight reduction of SFE on thermally modified spruce was achieved also by short term ultra-violet (UV) light exposure, generated by DCSBD.

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