Raising the permanent adhesion of coatings on resinous wood by APPCVD promotion

Kettner, Florian; Plaschkies, Katharina; Gerullis, Sven; Pfuch, Andreas; Küzün, Berrin

doi:10.1016/j.ijadhadh.2020.102642

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…This increase in the [O:C] ratio linearly correlates with a higher surface free energy of thermally modified wood species including alder, dark alder, ash, and aspen [ 455 ]. Because of increased polarity, APP treatment results in better adhesion properties of water-based coatings, for instance, on beech wood [ 456 ] and functional glaze or lacquer coating on larch, Douglas fir, and Scots pine wood [ 457 ].…”

Section: Materials Damagementioning

confidence: 99%

Environmental effects of stratospheric ozone depletion, UV radiation, and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2020

Neale

Barnes

Robson

et al. 2021

Photochem Photobiol Sci

118

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This assessment by the Environmental Effects Assessment Panel (EEAP) of the United Nations Environment Programme (UNEP) provides the latest scientific update since our most recent comprehensive assessment (Photochemical and Photobiological Sciences, 2019, 18, 595–828). The interactive effects between the stratospheric ozone layer, solar ultraviolet (UV) radiation, and climate change are presented within the framework of the Montreal Protocol and the United Nations Sustainable Development Goals. We address how these global environmental changes affect the atmosphere and air quality; human health; terrestrial and aquatic ecosystems; biogeochemical cycles; and materials used in outdoor construction, solar energy technologies, and fabrics. In many cases, there is a growing influence from changes in seasonality and extreme events due to climate change. Additionally, we assess the transmission and environmental effects of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is responsible for the COVID-19 pandemic, in the context of linkages with solar UV radiation and the Montreal Protocol.

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Section: Materials Damagementioning

confidence: 99%

Environmental effects of stratospheric ozone depletion, UV radiation, and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2020

Neale

Barnes

Robson

et al. 2021

Photochem Photobiol Sci

118

View full text Add to dashboard Cite

show abstract

“…Wood surfaces with lower surface free energy and increased roughness were obtained, yielding water contact angles as high as 138 • . Many other studies were conducted over the last five years to improve the properties of wood surface through plasma treatments, including polyester powder [203], polyester with aluminium coated silver and bismuth oxide [204] or TiO 2 [205], copper and aluminium microparticles with an acrylic binder [206], ZnO [207], TiO 2 [208], and various biocidal precursors [209].…”

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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“…Non-thermal dielectric barrier discharge (DBD) plasma holds the advantages of high degree of technological maturity, low energy consumption, uniform and stable discharge features, and uniform plasma spatial distribution (Profili et al 2017;Guo et al 2020). Enhanced adhesion between wood and adhesive, gained by pre-treatment of wooden constituents (particles, chips or veneers) with air electrical discharge, reflects in generation and promotion of active functional groups on the surface (Avramidis et al 2009), improved surface wettability with waterborne adhesives (Altgen et al 2015) and finally enhanced mechanical and physical properties of wood-based products (Rao et al 2018;He et al 2019;Kettner et al 2020). For instance, alteration of the surface chemical properties and etching of the wood surface with atmospheric DBD PT significantly improves the interfacial adhesion between adhesive and wood, thus enhancing the mechanical properties of plywood (Cao et al 2020) or particleboards (Altgen et al 2015(Altgen et al , 2016.…”

Section: Introductionmentioning

confidence: 99%

The effect of ageing on bonding performance of plasma treated beech wood with urea-formaldehyde adhesive

et al. 2021

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In the process of wood bonding, the usage of aged and inactivated wooden elements can cause a reduction in mechanical properties of products containing wood-adhesive joints. Treating wood with an atmospheric air plasma represents a sophisticated technique for surface activation. With this regard, to enhance the bondability of normal beech wood (Fagus sylvatica L.) with urea-formaldehyde (UF) adhesive, a dielectric barrier discharge plasma in floating electrode configuration was implemented. In this study, fresh and aged wood specimen both, untreated and plasma treated, were investigated. X-ray photoelectron spectroscopy revealed promotion of carbon-rich species with ageing, but generation of a new functional oxygen-containing functional groups after plasma treatment. Microscopic observations with scanning electron microscope showed no obvious changes in the wood structure after plasma treatment. Surface oxidation consequently improved the wettability of the wood surface with water and UF adhesive. However, this enhanced wettability slightly diminished over time. As shown with dynamic mechanical analysis, the rheological properties of the UF adhesive in wood-adhesive joints were not affected by aging nor by plasma treatment. The positive influence of plasma treatment and negative impact of substrate ageing to the shear strengths of wood lap-joints were determined using an automated bonding evaluation system. Similarly, the negative effect of wood ageing and the positive effect of plasma pre-treatment were reflected in the bending strengths of the produced laminated veneer lumbers. Results showed that plasma treatment of beech wood improves the bonding performance of both fresh and aged wood. Graphic abstract

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Raising the permanent adhesion of coatings on resinous wood by APPCVD promotion

Cited by 4 publications

References 20 publications

Environmental effects of stratospheric ozone depletion, UV radiation, and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2020

Environmental effects of stratospheric ozone depletion, UV radiation, and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2020

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

The effect of ageing on bonding performance of plasma treated beech wood with urea-formaldehyde adhesive

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