Plasma treatment of wood and wood-based materials to generate hydrophilic or hydrophobic surface characteristics

Avramidis, Georg; Hauswald, Evelyn; Lyapin, A.A.; Militz, Holger; Viöl, Wolfgang; Wolkenhauer, Arndt

doi:10.1080/17480270903281642

Cited by 76 publications

(41 citation statements)

References 34 publications

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“…Hexamethyldisiloxane (HMDSO) was introduced by plasma treatment to obtain hydrophobic wood surfaces [30][31][32]. HMDSO is polymerized with wood surfaces through plasma treatment, resulting in a cross-linked macromolecular structure involving Si-O-Si and Si-O-C linkages.…”

Section: Plasma Treatmentmentioning

confidence: 99%

Dimensional Stabilization of Wood

Kocaefe

2015

Curr Forestry Rep

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This paper comprehensively reviews the relevant literature and presents the methods and processes used to investigate the dimensional stabilization of wood using various modification techniques, including (a) hydrophobization of wood surfaces to block the entrance and exit of water; (b) impregnation treatment with bulking agents, such as resin and wax, to maintain wood in a swollen state and diminish dimensional changes caused by moisture; (c) chemical treatment with different chemical agents to reduce the hygroscopicity of the wood; and (d) high temperature heat treatment, which modifies wood components, reducing accessible hydroxyl groups and decreasing the possibility of water absorption. The results of dimensionally stabilizing wood via different treatments are interpreted and compared, and the effects of treating conditions and parameters on the dimensional changes of wood are analyzed.

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Section: Plasma Treatmentmentioning

confidence: 99%

Dimensional Stabilization of Wood

Kocaefe

2015

Curr Forestry Rep

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“…influence of treatment time, nature of the gas, plasma operating conditions, etc.) without significant insight on the identification or roles of dominant plasma species in surface modification, while focusing more on the desired application or empirical result (for example, improvement of wettability or wood-coating adhesion) (Acda et al 2011;Avramidis et al 2009;Podgorski and Roux 1999;Rehn and Viöl 2003).…”

Section: Introductionmentioning

confidence: 98%

Modification of hardwood samples in the flowing afterglow of N2–O2 dielectric barrier discharges open to ambient air

et al. 2015

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The effect of O 2 addition in the gas feed of an open-to-air N 2 -O 2 dielectric barrier discharge (DBD) on the surface modification of sugar maple hardwood samples is reported. After treatment by N 2 -O 2 plasma, an increase of the contact angle with water and a decrease of the contact angle with diiodomethane was observed. X-ray photoelectron spectroscopy and Fourier-transform infra-red analyses further reveal a decrease of the O/C as well as increase of the C=O peak and surface aromaticity. When O 2 is added to the nominally pure N 2 DBD, the discharge transits from a homogeneous regime to a filamentary regime with increased dissipated power and neutral gas temperature. As a result, surface modification by N 2 -O 2 plasmas becomes similar to those occurring under a low-temperature heat treatment of wood surfaces. In such conditions, a mechanism involving the thermally-activated deacetylation and depolymerisation of hemicelluloses and cross-linking between lignin and furfural and hydroxylmethylfurfural, leading to the increase of wood hydrophobicity is proposed.

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“…In general, many single and small adhesive drops are favoured, which are evenly distributed on the particle surfaces (Wilson and Krahmer 1976). Plasma treatment has successfully been applied previously to various solid wood surfaces in order to change their surface wettability (Avramidis et al 2009). A recent study reported on enhanced mechanical properties of particleboards made of plasma treated wood particles at low adhesive contents (Altgen et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Enhanced urea-formaldehyde adhesive spreading on plasma treated wood particles

Altgen

Bellmann

Wascher³

et al. 2016

Eur. J. Wood Prod.

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It is assumed that improved mechanical properties of plasma treated particleboards are caused by enhanced spreading of urea-formaldehyde adhesive on wood particles. Spreading of adhesive drops was therefore microscopically evaluated based on dimensions and shape of the drops. Plasma treated wood surfaces revealed increased adhesive spreading, which resulted in more contiguous and increased adhesive areas; this was indicated by decreased drop circularity. It is concluded that the plasma treatment increases the adhesive coverage of the particles and therefore enhances the mechanical properties

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Plasma treatment of wood and wood-based materials to generate hydrophilic or hydrophobic surface characteristics

Cited by 76 publications

References 34 publications

Dimensional Stabilization of Wood

Dimensional Stabilization of Wood

Modification of hardwood samples in the flowing afterglow of N2–O2 dielectric barrier discharges open to ambient air

Enhanced urea-formaldehyde adhesive spreading on plasma treated wood particles

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