Epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood
Public concern about the release of toxic compounds from wood-based products drives legislation towards enforcing industries to find and use more sustainable solutions for wood treatment. Plant oils are good alternatives to treat wood, minimizing or even neutralizing the impact on the environment. W...
| Autor principal: | |
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| Formato: | H2 |
| Lenguaje: | Inglés sueco |
| Publicado: |
SLU/Dept. of Forest Products
2013
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| Materias: |
| _version_ | 1855570945415053312 |
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| author | Fernández-Cano, Victor |
| author_browse | Fernández-Cano, Victor |
| author_facet | Fernández-Cano, Victor |
| author_sort | Fernández-Cano, Victor |
| collection | Epsilon Archive for Student Projects |
| description | Public concern about the release of toxic compounds from wood-based products drives legislation towards enforcing industries to find and use more sustainable solutions for wood treatment. Plant oils are good alternatives to treat wood, minimizing or even neutralizing the impact on the environment. Wood modification with epoxidised linseed oil (ELO) and acetic acid as catalyst has proven a suitable method to impregnate and protect wood. However, the mixture presents a serious inconvenience because of the quick polymerization of the ingredients that limits its practical application. Therefore, this study was designed to evaluate an alternative method using a two-step process which bypassed the problem above. Several treatment options using this method onto Scots pine sapwood were tested. The results were evaluated by determining the dimensional stability, hydrophobic and mechanical properties of the treated wood.
The studied treatments provided very good dimensional stability of the material, the measured anti-swelling efficiency (ASE) was in the range 40-57%. Reference samples of thermally modified wood showed only 40% ASE. The grafting of ELO to the wood polymeric constituents was studied using FT-IR spectroscopy. The modification influenced negatively the modulus of rupture, while the modulus of elasticity, hardness and compression strength of the material was almost unchanged. It can be concluded that the two-step process method seems a possible and feasible practical solution for ELO treatment of wood. |
| format | H2 |
| id | RepoSLU6031 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés swe |
| publishDate | 2013 |
| publishDateSort | 2013 |
| publisher | SLU/Dept. of Forest Products |
| publisherStr | SLU/Dept. of Forest Products |
| record_format | eprints |
| spelling | RepoSLU60312013-09-10T14:48:29Z Epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood Epoxiderad linolja som hydrofob substans för träskydd : teknologi för behandling och egenskaper av modifierat trä Fernández-Cano, Victor dimensional stability epoxidised linseed oil FT-IR spectroscopy impregnation leaching linseed oil mechanical properties modified wood Scots pine sapwood two-step process Public concern about the release of toxic compounds from wood-based products drives legislation towards enforcing industries to find and use more sustainable solutions for wood treatment. Plant oils are good alternatives to treat wood, minimizing or even neutralizing the impact on the environment. Wood modification with epoxidised linseed oil (ELO) and acetic acid as catalyst has proven a suitable method to impregnate and protect wood. However, the mixture presents a serious inconvenience because of the quick polymerization of the ingredients that limits its practical application. Therefore, this study was designed to evaluate an alternative method using a two-step process which bypassed the problem above. Several treatment options using this method onto Scots pine sapwood were tested. The results were evaluated by determining the dimensional stability, hydrophobic and mechanical properties of the treated wood. The studied treatments provided very good dimensional stability of the material, the measured anti-swelling efficiency (ASE) was in the range 40-57%. Reference samples of thermally modified wood showed only 40% ASE. The grafting of ELO to the wood polymeric constituents was studied using FT-IR spectroscopy. The modification influenced negatively the modulus of rupture, while the modulus of elasticity, hardness and compression strength of the material was almost unchanged. It can be concluded that the two-step process method seems a possible and feasible practical solution for ELO treatment of wood. Allmänhetens oro över utsläpp av giftiga ämnen ifrån träbaserade produkter driver lagstiftning och därmed industrier att hitta och använda mer hållbara lösningar för behandling av trä. Växtoljor är bra alternativ för att behandla trä då de minimerar eller helt eliminerar miljöeffekterna. Trämodifiering med epoxiderad linolja (ELO) och ättiksyra som katalysator har visat sig vara en lämplig metod för att impregnera och skydda trä. Dock är ELO/ättiksyreblandningen praktiskt svår att hantera på grund av en snabb polymerisering av dessa ingredienser vilket begränsar dess praktiska tillämpning. På grund av den begränsningen har därför denna studie utformats för att utvärdera en alternativ metod bestående av en 2-stegs impregneringsprocess vilken undanröjer noterade problem. Flera behandlingsalternativ baserat på denna nya föreslagna metod har testats på tallsplintved. Resultaten utvärderades genom bestämning av dimensionsstabilitet, samt hydrofoba och mekaniska egenskaperna hos det behandlade träet. Den föreslagna metoden uppvisar mycket god dimensionsstabilitet hos behandlat material, den uppmätta ”anti-swelling efficiency” (ASE, ”anti-svullnads effektivitet”) låg i intervallet 40-55%. Referensprover av termiskt modifierat trä visade endast 40% ASE. ELO-addition till trä studerades med FT-IR-spektroskopi. Modifieringen påverkade brotthållfastheten negativt emedan elasticitetsmodul, hårdhet och tryckhållfasthet hos behandlat trä var nästan oförändrad. Slutsatsen är att den föreslagna tvåstegsprocessen verkar vara en möjligt och praktisk genomförbar lösning för ELO-behandling av trä. SLU/Dept. of Forest Products 2013 H2 eng swe https://stud.epsilon.slu.se/6031/ |
| spellingShingle | dimensional stability epoxidised linseed oil FT-IR spectroscopy impregnation leaching linseed oil mechanical properties modified wood Scots pine sapwood two-step process Fernández-Cano, Victor Epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood |
| title | Epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood |
| title_full | Epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood |
| title_fullStr | Epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood |
| title_full_unstemmed | Epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood |
| title_short | Epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood |
| title_sort | epoxidised linseed oil as hydrophobic substance for wood protection : technology of treatment and properties of modified wood |
| topic | dimensional stability epoxidised linseed oil FT-IR spectroscopy impregnation leaching linseed oil mechanical properties modified wood Scots pine sapwood two-step process |