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

J 2021

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

KOŠELOVÁ, Zuzana, Jozef RÁHEĽ and Oleksandr GALMIZ

Basic information

Original name

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

Authors

KOŠELOVÁ, Zuzana (203 Czech Republic, belonging to the institution), Jozef RÁHEĽ (703 Slovakia, belonging to the institution) and Oleksandr GALMIZ (804 Ukraine, guarantor, belonging to the institution)

Edition

Coatings, Basel, MDPI, 2021, 2079-6412

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10305 Fluids and plasma physics

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 3.236

RIV identification code

RIV/00216224:14310/21:00120964

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.3390/coatings11010040

UT WoS

000610026200001

Keywords in English

Norway spruce; thermally treated wood; DCSBD; plasma treatment; surface free energy

Abstract

V originále

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.

Links

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Name: CEPLANT

Citovat

KOŠELOVÁ, Zuzana, Jozef RÁHEĽ and Oleksandr GALMIZ. Plasma Treatment of Thermally Modified and Unmodified Norway Spruce Wood by Diffuse Coplanar Surface Barrier Discharge. Coatings. Basel: MDPI, 2021, vol. 11, No 1, p. 1-16. ISSN 2079-6412. Available from: https://dx.doi.org/10.3390/coatings11010040.

@article{1727717,
   author = {Košelová, Zuzana and Ráheľ, Jozef and Galmiz, Oleksandr},
   article_location = {Basel},
   article_number = {1},
   doi = {http://dx.doi.org/10.3390/coatings11010040},
   keywords = {Norway spruce; thermally treated wood; DCSBD; plasma treatment; surface free energy},
   language = {eng},
   issn = {2079-6412},
   journal = {Coatings},
   title = {Plasma Treatment of Thermally Modified and Unmodified Norway Spruce Wood by Diffuse Coplanar Surface Barrier Discharge},
   url = {https://doi.org/10.3390/coatings11010040},
   volume = {11},
   year = {2021}
}

TY  - JOUR
ID  - 1727717
AU  - Košelová, Zuzana - Ráheľ, Jozef - Galmiz, Oleksandr
PY  - 2021
TI  - Plasma Treatment of Thermally Modified and Unmodified Norway Spruce Wood by Diffuse Coplanar Surface Barrier Discharge
JF  - Coatings
VL  - 11
IS  - 1
SP  - 1-16
EP  - 1-16
PB  - MDPI
SN  - 20796412
KW  - Norway spruce
KW  - thermally treated wood
KW  - DCSBD
KW  - plasma treatment
KW  - surface free energy
UR  - https://doi.org/10.3390/coatings11010040
L2  - https://doi.org/10.3390/coatings11010040
N2  - 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.
ER  -

KOŠELOVÁ, Zuzana, Jozef RÁHEĽ and Oleksandr GALMIZ. Plasma Treatment of Thermally Modified and Unmodified Norway Spruce Wood by Diffuse Coplanar Surface Barrier Discharge. \textit{Coatings}. Basel: MDPI, 2021, vol.~11, No~1, p.~1-16. ISSN~2079-6412. Available from: https://dx.doi.org/10.3390/coatings11010040.

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