Effect of using oxygen, carbon dioxide, and carbon monoxide as active gases in the atmospheric plasma treatment of fiber-reinforced polycyanurate composites

AbstractPlasma treatment is becoming a mature technique for modification of surfaces of various materials, including wood. A better insight in the treatment process and the impact of the plasma on properties of wood bulk are still needed. The study was performed on Norway spruce and common beech wood, as well as their thermally modified variations. The formations of the airborne discharge, as well as mass changes of the treated wood, were monitored. The impact of such treatment on wood-coating interaction was investigated by evaluating the dynamic wettability and penetration into wood. At the wood surface, plasma streamers were observed more intense on denser latewood regions. Wood mass loss was higher with increasing number of passes through the plasma discharge and was lower for thermally modified wood than for unmodified wood. Plasma treatment increased the surface free energy of all wood species and lowered the contact angles of a waterborne coating, these together indicating enhanced wettability after treatment. Finally, the distribution and penetration depth of the coating were studied with X-ray microtomography. It was found that the coating penetrated deeper into beech than into spruce wood. However, the treatment with plasma increased the penetration of the coating only into spruce wood.

Download Full-text

Correction to: Enhancement of strength of adhesive bond between wood and metal using atmospheric plasma treatment

Cellulose ◽

10.1007/s10570-020-03614-8 ◽

2021 ◽

Vol 28 (5) ◽

pp. 3295-3295

Author(s):

Jure Žigon ◽

Janez Kovač ◽

Rok Zaplotnik ◽

Jaša Saražin ◽

Milan Šernek ◽

...

Keyword(s):

Plasma Treatment ◽

Adhesive Bond ◽

Atmospheric Plasma

Download Full-text

Cold atmospheric plasma treatment for diaper dermatitis: A case report

Dermatologic Therapy ◽

10.1111/dth.14739 ◽

2021 ◽

Author(s):

Chenchen Zhang ◽

Jun Zhao ◽

Yamei Gao ◽

Jing Gao ◽

Yongmei Lv

Keyword(s):

Case Report ◽

Plasma Treatment ◽

Atmospheric Plasma ◽

Diaper Dermatitis ◽

Cold Atmospheric Plasma

Download Full-text

Plasma Treatment of Fish Cells: The Importance of Defining Cell Culture Conditions in Comparative Studies

Applied Sciences ◽

10.3390/app11062534 ◽

2021 ◽

Vol 11 (6) ◽

pp. 2534

Author(s):

Henrike Rebl ◽

Claudia Bergemann ◽

Sebastian Rakers ◽

Barbara Nebe ◽

Alexander Rebl

Keyword(s):

Plasma Treatment ◽

Cell Lines ◽

Mammalian Cells ◽

Atmospheric Pressure Plasma ◽

Fish Farming ◽

Skin Lesions ◽

Atmospheric Plasma ◽

Fish Cell ◽

Farmed Fish ◽

Fish Cells

The present study provides the fundamental results for the treatment of marine organisms with cold atmospheric pressure plasma. In farmed fish, skin lesions may occur as a result of intensive fish farming. Cold atmospheric plasma offers promising medical potential in wound healing processes. Since the underlying plasma-mediated mechanisms at the physical and cellular level are yet to be fully understood, we investigated the sensitivity of three fish cell lines to plasma treatment in comparison with mammalian cells. We varied (I) cell density, (II) culture medium, and (III) pyruvate concentration in the medium as experimental parameters. Depending on the experimental setup, the plasma treatment affected the viability of the different cell lines to varying degrees. We conclude that it is mandatory to use similar cell densities and an identical medium, or at least a medium with identical antioxidant capacity, when studying plasma effects on different cell lines. Altogether, fish cells showed a higher sensitivity towards plasma treatment than mammalian cells in most of our setups. These results should increase the understanding of the future treatment of fish.

Download Full-text