Effect of accelerated weathering on surface chemistry of modified wood
| Autor: | Morten Eikenes, Ali Temiz, Jonas Hafrén, Nasko Terziev |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
food.ingredient
Tall oil General Physics and Astronomy Infrared spectroscopy Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films Furfuryl alcohol Chitosan chemistry.chemical_compound food chemistry Linseed oil Lignin Chromated copper arsenate Fourier transform infrared spectroscopy Composite material Nuclear chemistry |
| Zdroj: | Applied Surface Science. 253:5355-5362 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2006.12.005 |
| Popis: | In this study, the effects of UV-light irradiation and water spray on colour and surface chemistry of scots pine sapwood samples were investigated. The specimens were treated with chromated copper arsenate (CCA), a metal-free propiconazol-based formulation, chitosan, furfuryl alcohol and linseed and tall oils. The weathering experiment was performed by cycles of 2 h UV-light irradiation followed by water spray for 18 min. The changes at the surface of the weathered samples were characterised by Fourier transform infrared spectroscopy (FT-IR); colour characterizations were performed by measuring CIELab parameters. The results show that all treatment methods except chitosan treatment provided lower colour changes than the control groups after 800 h exposure in weathering test cycle, but differences between chitosan and control were also small. The lowest colour changes were found on linseed oil (full cell process) and CCA treated wood. FT-IR results show that oil treatment (linseed and tall oil) decreased the intensities of a lignin specific peak (1500–1515 cm −1 ). Absorption band changes at 1630–1660 cm −1 were reduced by all treatments. |
| Databáze: | OpenAIRE |
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