Activation of Spruce Wood Surfaces by Plasma Treatment After Long Terms of Natural Surface Inactivation

Aydın, İsmail; Demirkır, Cenk

doi:10.1007/s11090-010-9244-5

Cited by 42 publications

(27 citation statements)

References 23 publications

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“…In recent years, the plasma modification process has been used to modify the surfaces of wood and wood based materials in order to enhance surface properties of the wood component and mechanical strength of the wood based materials (Aydin and Demirkir 2010, Acda et al 2012, Demirkir et al 2014.Plasma treatment is used to improve bonding properties of many materials such as wood based products by altering the surface properties and chemical structure of the wooden components. Bond quality as one of the most important parameters in wood based panels depends on the intermolecular attraction between the adhesive and the wood components.…”

Section: Introductionmentioning

confidence: 99%

“…Some gas species can change the surfaces hydrophobic, whereas other ones create hydrophilic surfaces (Mortavazi and Nosonovsky 2012). One of the most popular gas species used in plasma influencing wood surfaces is oxygen, with target to improve adhesion (Acda et al 2012;Aydin and Demirkir 2010). Oxygen plasma has also been used for cleaning different areas such as micro electro mechanical systems (Berman and Krim 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Oxygen plasma has also been used for cleaning different areas such as micro electro mechanical systems (Berman and Krim 2012). Literature contains some studies about the effects of plasma treatment with different gas species on adhesion properties (Wolkenhauer et al 2009), contact angle (Aydin and Demirkir 2010), wettability and bond quality of wood based and other composite materials (Kim et al 2009). …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of plasma surface treatment on bending strength and modulus of elasticity of beech and poplar plywood

Demirkır

Aydın

Çolak

et al. 2017

Maderas, Cienc. tecnol.

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This is a study on the effect of plasma treatment with different gases and plasma intensity on the bending strength and modulus of elasticity of plywood manufactured from beech and poplar. Oxygen (O 2 ) and ammonia (NH 3 ) plasma were applied on the veneer sheets; two plasma intensities were applied on the veneers with 150 and 300 W in the plasma chamber during one minute. Phenol formaldehyde resin was applied on one surfaces of each veneer with approx. 160 g/m 2. Bending strength and modulus of elasticity were determined according to EN 310.The effects of plasma surface treatment on chemical structure of the panels were determined with FTIR-ATR analysis. Bending strength of all tested panels slightly and partly increased without statistical significance when applying oxygen plasma. The effect of ammonia plasma treatment on bending strength and was determined by the wood species and the plasma intensity, and it was not uniform. Modulus of elasticity of the panels with oxygen plasma treatment showed in most cases improvement, whereas ammonia plasma pretreated veneers caused lower values compared to the control panels.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of plasma surface treatment on bending strength and modulus of elasticity of beech and poplar plywood

Demirkır

Aydın

Çolak

et al. 2017

Maderas, Cienc. tecnol.

Self Cite

View full text Add to dashboard Cite

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“…Surface plasma treatment is an interesting way to change surface properties of many kinds of material: metals [1][2][3], polymers [4][5][6], and wood [7][8][9]. Plasma treatment leads to surface property changes due to the formation of functional groups on the surface.…”

Section: Introductionmentioning

confidence: 99%

Apparent Surface Free Energy of Polymer/Paper Composite Material Treated by Air Plasma

Terpiłowski

2017

International Journal of Polymer Science

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Surface plasma treatment consists in changes of surface properties without changing internal properties. In this paper composite polymer/paper material is used for production of packaging in cosmetic industry. There are problems with bonding this material at the time of packaging production due to its properties. Composite surface was treated by air plasma for 1, 10, 20, and 30 s. The advancing and receding contact angles of water, formamide, and diiodomethane were measured using both treated and untreated samples. Apparent surface free energy was estimated using the hysteresis (CAH) and Van Oss, Good, Chaudhury approaches (LWAB). Surface roughness was investigated using optical profilometry and identification of after plasma treatment emerging chemical groups was made by means of the XPS (X-ray photoelectron spectroscopy) technique. After plasma treatment the values of contact angles decreased which is particularly evident for polar liquids. Apparent surface free energy increased compared to that of untreated samples. Changes of energy value are due to the electron-donor parameter of energy. This parameter increases as a result of adding polar groups at the time of surface plasma activation. Changes of surface properties are combination of increase of polar chemical functional groups, increase on the surface, and surface roughness increase.

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“…One of the alternative technologies for creating an ideal wood surface is plasma treatment. Plasma techniques can be used for the surface treatment and modification of lignocellulosic materials (Aydin and Demirkir, 2010). Plasma treatment technology is simple and has low operating costs.…”

Section: Introductionmentioning

confidence: 99%

Effects of plasma treatment and sanding process on surface roughness of wood veneers

Demirkır

Aydın²,

Çolak³

et al. 2014

Turk J Agric For

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An ideal veneer surface is crucial for good panel properties in plywood manufacturing. The aim of this study was to compare plasma treatments and sanding (mechanical) processes with respect to the surface roughness of veneers. Rotary-cut veneers with a thickness of 2 mm from Scots pine (Pinus sylvestris) logs were used as material. After rotary peeling, veneer sheets were dried at 110 °C in a veneer dryer. Veneer sheets were divided into 4 main groups. The surfaces of the control veneer sheets were left untreated. Two different grits of sandpaper, 80 and 180, were used for sanding the surfaces of veneers. Plasma treatment was applied to the last veneer group with 3 different gases (oxygen, nitrogen, and ammonia) and 3 different plasma times (1 min, 5 min, and 15 min). The Mitutoyo Surftest SJ-301 instrument was used to determine surface roughness of samples. Average roughness (Ra), mean peak-to-valley height (Rz), and maximum roughness (Rmax) parameters were measured to evaluate the surface roughness of the samples based on DIN 4768. It was found that the smoothest veneer surfaces were obtained with the sanding processes. Surface roughness values (Rz) of veneer sheets sanded with 180 grit sandpaper were lower than those of veneers sanded with 80 grit sandpaper. Compared with the plasma treatment in terms of surface roughness, plasma-treated veneers had higher Rz values. It was also determined that Rz values were the lowest in the veneers treated with nitrogen plasma. Additionally, the surface roughness values of Scots pine veneers treated with ammonia plasma were a little higher than those of veneer sheets treated with oxygen plasma. The effect of plasma treatment time on surface roughness was not found to be statistically significant.

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Activation of Spruce Wood Surfaces by Plasma Treatment After Long Terms of Natural Surface Inactivation

Cited by 42 publications

References 23 publications

Effects of plasma surface treatment on bending strength and modulus of elasticity of beech and poplar plywood

Effects of plasma surface treatment on bending strength and modulus of elasticity of beech and poplar plywood

Apparent Surface Free Energy of Polymer/Paper Composite Material Treated by Air Plasma

Effects of plasma treatment and sanding process on surface roughness of wood veneers

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