Properties of thermally modified teakwood
Fuente:
Redalyc
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Universidad del Bío Bío
2021
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1876460955082162176 |
|---|---|
| author | Elaine Cristina Lengowski |
| author_facet | Elaine Cristina Lengowski |
| contents | Properties of thermally modified teakwood Elaine Cristina Lengowski Eraldo Antonio Bonfatti Silvana Nisgoski Graciela Inês Bolzon de Muñiz Umberto Klock Agrociencias Colorimetry Tectona grandis wood properties thermogravimetry wood modification Thermal modification is a treatment that seeks to improve the properties of wood and reduce the heterogeneity in its color. The objective of this work was to evaluate the effect of thermal treatment on the anatomical, chemical, physical, mechanical, colorimetric, and thermal stability properties of teakwood. For this, teakwood samples were treated by an industrial autoclave at final cycle temperature of 160 ºC. The reduction of cell wall thickness, the formation of cross-fissures and the crystallization of the wax inside the pores were observed in the anatomical structure. Chemically, the extractives evaporated and the polysaccharides ruptured, of which hemicellulose was the most affected. The heat treatment promoted lower equilibrium moisture, reducing the hygroscopicity and improving the dimensional stability of the wood. Considering the mechanical properties, the rupture modulus and the longitudinal and tangential hardness decreased after the heat treatment. The color of the wood changed significantly, from pink to dark brown. The treated wood had higher thermal stability, with greater weight loss at higher temperatures than the untreated wood. 2021 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48565417010 https://www.redalyc.org/journal/485/48565417010/ https://www.redalyc.org/journal/485/48565417010/html/ https://www.redalyc.org/journal/485/48565417010/48565417010.epub https://www.redalyc.org/journal/485/48565417010/movil en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Vol.23 |
| format | Artículo científico |
| id | redalyc_48565417010 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | Universidad del Bío Bío |
| spellingShingle | Properties of thermally modified teakwood Elaine Cristina Lengowski Agrociencias Colorimetry Tectona grandis wood properties thermogravimetry wood modification Properties of thermally modified teakwood Elaine Cristina Lengowski Eraldo Antonio Bonfatti Silvana Nisgoski Graciela Inês Bolzon de Muñiz Umberto Klock Agrociencias Colorimetry Tectona grandis wood properties thermogravimetry wood modification Thermal modification is a treatment that seeks to improve the properties of wood and reduce the heterogeneity in its color. The objective of this work was to evaluate the effect of thermal treatment on the anatomical, chemical, physical, mechanical, colorimetric, and thermal stability properties of teakwood. For this, teakwood samples were treated by an industrial autoclave at final cycle temperature of 160 ºC. The reduction of cell wall thickness, the formation of cross-fissures and the crystallization of the wax inside the pores were observed in the anatomical structure. Chemically, the extractives evaporated and the polysaccharides ruptured, of which hemicellulose was the most affected. The heat treatment promoted lower equilibrium moisture, reducing the hygroscopicity and improving the dimensional stability of the wood. Considering the mechanical properties, the rupture modulus and the longitudinal and tangential hardness decreased after the heat treatment. The color of the wood changed significantly, from pink to dark brown. The treated wood had higher thermal stability, with greater weight loss at higher temperatures than the untreated wood. 2021 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48565417010 https://www.redalyc.org/journal/485/48565417010/ https://www.redalyc.org/journal/485/48565417010/html/ https://www.redalyc.org/journal/485/48565417010/48565417010.epub https://www.redalyc.org/journal/485/48565417010/movil en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Vol.23 |
| title | Properties of thermally modified teakwood |
| topic | Agrociencias Colorimetry Tectona grandis wood properties thermogravimetry wood modification |
| url | https://www.redalyc.org/articulo.oa?id=48565417010 https://www.redalyc.org/journal/485/48565417010/ https://www.redalyc.org/journal/485/48565417010/html/ https://www.redalyc.org/journal/485/48565417010/48565417010.epub https://www.redalyc.org/journal/485/48565417010/movil |