Effect of DCSBD plasma treatment on surface properties of thermally modified wood

Talviste, Rasmus; Galmiz, Oleksandr; Stupavská, Monika; Tučeková, Zlata Kelar; Kaarna, Kalev; Kováčik, Dušan

doi:10.1016/j.surfin.2019.04.005

Cited by 32 publications

(26 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effects of surface reactions with such particles are limited to a depth of several 100 Å (Joshi and Butola 2013; Peng and Zhang 2018), whereas the bulk properties of the treated substrate remain unchanged (Chu et al 2002;Recek 2019). In the case of wood, the effect is relatively stable in time, even a few days after modification (Talviste et al 2019).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2020

View full text Add to dashboard Cite

Combinations of wood and metal are interesting hybrid composite materials, joining together the low density of wood with the stiffness and strength of metals. Different types of adhesives are used to connect wood and metal elements, but the compatibility between adhesives used and load-bearing materials must be sufficient, which often is challenging. In adhesive bonding technology, surface treatments are a crucial step in the process. In this study, an atmospheric plasma discharge was employed to enhance the adhesion strength of joints between common beech (Fagus sylvatica L.) wood, metals (steel and aluminum alloy), and four different types of adhesives. The optical properties of plasma discharges and its influence on treated substrates' surface morphology depended on the inherent properties of the treated materials. X-ray photoelectron spectroscopy revealed the surface oxidation of all the materials after plasma treatment. Consequently, the surface free energy of all materials increased as well. The positive effect of the plasma treatment on the tensile shear strength of single-lap joints shows a high potential of atmospheric plasma treatment technology for enhancement of adhesives strength of joints combining wooden elements, wood and steel, or wood and aluminum alloys. In addition to that, expensive epoxy and polyurethane adhesives could be replaced by more affordable polyvinyl acetate and melamine-ureaformaldehyde adhesives, and still perform at equal levels if the plasma was applied prior to bonding.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Application of DBD plasmas to wood is much more challenging than to conventional substrates, due to the non-homogenous nature of this natural polymer (Levasseur et al 2014). Therefore, proper treatment parameters need to be found (Peng and Zhang 2019;Talviste et al 2019;Tang et al 2006).…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Plasma treatment of thermally modified wood has positive effects on both wettability [7][8][9][10][11], and coating adhesion [11]. These findings were obtained using wood that was thermally modified in air/steam or nitrogen [7][8][9][10][11]. However, wood can also be thermally modified using oil as the heating medium [12].…”

Section: Introductionmentioning

confidence: 95%

“…Wood that has been heat-treated at temperatures of 180-220 • C to reduce its susceptibility to fungal decay and moisture-induced deformation is hydrophobic [4][5][6]. Accordingly, there has been interest in using plasma treatments to reverse the effects of heat treatment (thermal modification) on the surface hydrophobicity of wood [7][8][9][10][11]. Plasma treatment of thermally modified wood has positive effects on both wettability [7][8][9][10][11], and coating adhesion [11].…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, there has been interest in using plasma treatments to reverse the effects of heat treatment (thermal modification) on the surface hydrophobicity of wood [7][8][9][10][11]. Plasma treatment of thermally modified wood has positive effects on both wettability [7][8][9][10][11], and coating adhesion [11]. These findings were obtained using wood that was thermally modified in air/steam or nitrogen [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plasma Treatment Reduced the Discoloration of an Acrylic Coating on Hot-Oil Modified Wood Exposed to Natural Weathering

Jamali

Evans

2020

Coatings

View full text Add to dashboard Cite

We test the hypothesis that plasma-treatment will remove oil from the surface of hot-oil modified blue-stained pine wood, and improve the adhesion and outdoor performance of a white acrylic coating on the modified wood. Modified wood was treated with water-vapour plasma, and microstructural changes at wood surfaces were examined. Plasma treatment removed oil from the surface of modified wood and etched bordered pits. The contact angle of water droplets on modified wood was 91.8 • , but plasma-treatment for only 33 s reduced contact angle to less than that of the unmodified control (48.6 • ). The adhesion of the acrylic paint to modified wood was unaffected by plasma-treatment, but the adhesion rating of coated samples tested wet was slightly lower (3.1) than that of the coating on samples tested dry (3.5). The lightness value (CIE-L) of the acrylic coating on hot-oil modified wood samples exposed outdoors for 18 months was significantly lower (darker, 65.5) than that of the coating on similarly modified and exposed samples pre-treated with plasma (75.8). We conclude that plasma-treatment shows promise as a way of removing oil from the surface of hot-oil modified wood and reducing the discolouration of an acrylic coating on modified wood exposed to natural weathering.

show abstract

Liquid as Plasma Mask for Constructing Arbitrary Area with Contrary Wettability on Hydrophobic Textiles

Yang,

Hao,

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Materials with contrary wettability have various functions and applications. Common methods such as chemical modification and secondary treatment with solid mask to achieve relevant wettability either have harmful additives or construct fixed shape. Herein, liquid is introduced as a plasma mask for constructing arbitrary area with contrary wettability on hydrophobic textiles. In atmospheric plasma working region, exposed area of textiles achieves hydrophilic while liquid shielding area maintains the original wettability. Water–ethanol mixtures with a broad range of surface tension are chosen as template liquid to meet most hydrophobic textiles with the property of erasable evaporation without residue. Liquid mask with fluidity can be drawn in any shape at any time, meanwhile, plasma treatment highlights the merit of no chemical additive. Higher resolution will be achieved when the operation process is further refined. This study may provide insights for constructing advanced infiltrating materials and replacing solid with liquid in more application scenarios.

show abstract

Effect of DCSBD plasma treatment on surface properties of thermally modified wood

Cited by 32 publications

References 37 publications

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

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

Plasma Treatment Reduced the Discoloration of an Acrylic Coating on Hot-Oil Modified Wood Exposed to Natural Weathering

Liquid as Plasma Mask for Constructing Arbitrary Area with Contrary Wettability on Hydrophobic Textiles

Contact Info

Product

Resources

About