Deposition of fluorocarbon groups on wood surfaces using the jet of an atmospheric-pressure dielectric barrier discharge

Levasseur, Olivier; Vlad, Mirela; Profili, Jacopo; Ghérardi, Nicolas; Sarkissian, A.; Stafford, L.

doi:10.1007/s00226-017-0958-x

Cited by 14 publications

(14 citation statements)

References 38 publications

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“…[5,6] In this regard, modifying surfaces with plasma is considered a very efficient route to enhance surface hydrophobicity, either by grafting of functional groups (plasma treatment) [7] or by depositing a new adlayer (plasma polymerization). [8,9] Through judicious control of the operating conditions and the gas, [10] liquid, [11] or solid precursors, [8] nonthermal plasma processes allow the treatment of heat-sensitive woody biomass materials. [12] In contrast to most common paper treatment methods, such as extrusion coating and surface sizing, which typically require more than 10 g/m 2 of material to provide sufficient barrier properties, the quantity of material deposited by plasma is about three orders of magnitude smaller, in the order of 10 mg/m 2 .…”

Section: Introductionmentioning

confidence: 99%

Analysis of transport phenomena during plasma deposition of hydrophobic coatings on porous cellulosic substrates in plane‐to‐plane dielectric barrier discharges at atmospheric pressure

Babaei

Profili

Asadollahi

et al. 2020

Plasma Processes & Polymers

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In this study, four-layer stacks of bleached, unrefined Kraft papers are exposed to a plane-to-plane dielectric barrier discharge at atmospheric pressure operated in a glow-like discharge regime and sustained in a mixture of hexamethyldisiloxane and helium gases. Scanning electron microscopy confirms that the plasma-deposited coating follows the roughness of the porous cellulosic substrate. Whereas fairly spatially homogeneous coatings are obtained on silicon, significant variations of the coatings' thickness, organic content, and water contact angle are observed along the gas flow lines on the Kraft paper. These effects are even more important in the presence of substrate outgassing. In addition, plasma-generated species sequentially penetrate down to the fourth layer of the cellulosic substrate, rendering surfaces hydrophobic with very low water absorption kinetics.

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Section: Introductionmentioning

confidence: 99%

Analysis of transport phenomena during plasma deposition of hydrophobic coatings on porous cellulosic substrates in plane‐to‐plane dielectric barrier discharges at atmospheric pressure

Babaei

Profili

Asadollahi

et al. 2020

Plasma Processes & Polymers

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“…In addition, the “hole” with segmented edges in Figure 5j is of the size of typical discharge filaments (~0.1 mm). [ 33,48 ] Figures 5j–l further show that some areas display cauliflower‐like aggregates on the fibrillated structures (see red arrows in Figures 5j and 5l), [ 32,34,35,47 ] whereas others are not covered with any coating (see Figure 5K). These results indicate a higher accumulation of deposits in stained zones than in the unstained ones.…”

Section: Resultsmentioning

confidence: 99%

“…Levasseur et al [ 32,33 ] and Profili et al [ 34,35 ] have demonstrated the possibility of using plane‐to‐plane DBDs to confer hydrophobic properties to cellulosic (wood and paper) substrates. Both managed to alter the chemical response of the samples without incurring damage on their surfaces.…”

Section: Introductionmentioning

confidence: 99%

Modification of microfibrillated cellulosic foams in a dielectric barrier discharge at atmospheric pressure

Meunier

Profili

Babaei

et al. 2020

Plasma Processes & Polymers

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This study explores the plasma‐induced modification of microfibrillated cellulose (MFC) foams in a plane‐to‐plane atmospheric‐pressure dielectric barrier discharge with helium and hexamethyldisiloxane as carrier and precursor gases, with and without a gas gap. When the foam took up all of the gas gap, filamentary discharges were generated and burn‐like damage was produced. This resulted in highly inhomogeneous deposits having both hydrophilic and hydrophobic domains. MFC foams taking up only a portion of the gas gap volume generated a homogeneous discharge and induced cellulose defibrillation. They generated effective hydrophobic surfaces on both the top and bottom of the foams. Oleophilicity measurements were also carried out, which support the possibility of an effective separation of oily wastewater using a green and renewable material.

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“…They found that longer treatment periods would lead to higher hydrophobicity, with optimal water contact angles of 135.2 • and 129.8 • on the spruce and cedar, respectively. Levasseur et al also used C 3 F 8 to improve the hydrophobicity of sugar maple wood by DBD plasma with inert gases (Ar and N 2 ) [199]. They noted that the hydrophobicity of the obtained surfaces was directly linked to the voltage of the plasma, which could yield a 140 • static water contact angle at the highest voltage (10 kV).…”

Section: Plasma Modificationmentioning

confidence: 99%

Trends in Chemical Wood Surface Improvements and Modifications: A Review of the Last Five Years

Blanchet

Pepin

2021

Coatings

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Increasing the use of wood in buildings is regarded by many as a key solution to tackle climate change. For this reason, a lot of research is carried out to develop new and innovative wood surface improvements and make wood more appealing through features such as increased durability, fire-retardancy, superhydrophobicity, and self-healing. However, in order to have a positive impact on the society, these surface improvements must be applied in real buildings. In this review, the last five years of research in the domain of wood surface improvements and modifications is first presented by sorting the latest innovations into different trends. Afterward, these trends are correlated to specifications representing different normative, ecologic and economic factors which must be considered when expecting to introduce a wood treatment to the market. With this review, the authors hope to help researchers to take into consideration the different factors influencing whether new innovations can leave the research laboratory or not, and thereby facilitate the introduction of new wood surface treatments in the society.

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Deposition of fluorocarbon groups on wood surfaces using the jet of an atmospheric-pressure dielectric barrier discharge

Cited by 14 publications

References 38 publications

Analysis of transport phenomena during plasma deposition of hydrophobic coatings on porous cellulosic substrates in plane‐to‐plane dielectric barrier discharges at atmospheric pressure

Analysis of transport phenomena during plasma deposition of hydrophobic coatings on porous cellulosic substrates in plane‐to‐plane dielectric barrier discharges at atmospheric pressure

Modification of microfibrillated cellulosic foams in a dielectric barrier discharge at atmospheric pressure

Trends in Chemical Wood Surface Improvements and Modifications: A Review of the Last Five Years

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