Dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor system
Eucalyptus nitens is a fast growing plantation species that has a good acclimation in Chile. It is commonly used for pulp and paper, but there is a growing market for solid wood products made from this species and an interest on producing high quality material. Thermal modification technology have...
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| Format: | Article |
| Language: | English |
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Universidad del Bío-Bío
2019-04-01
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| Series: | Maderas: Ciencia y Tecnología |
| Subjects: | |
| Online Access: | https://revistas.ubiobio.cl/index.php/MCT/article/view/3340 |
| _version_ | 1797354691661660160 |
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| author | Maximilian Wentzel Christian Brischke Holger Militz |
| author_facet | Maximilian Wentzel Christian Brischke Holger Militz |
| author_sort | Maximilian Wentzel |
| collection | DOAJ |
| description |
Eucalyptus nitens is a fast growing plantation species that has a good acclimation in Chile. It is commonly used for pulp and paper, but there is a growing market for solid wood products made from this species and an interest on producing high quality material. Thermal modification technology have been used to obtain high quality product out of fast growing plantation species. In this study we modified Eucalyptus nitens to analyse the influences of the process conditions and evaluated its mechanical properties under several process conditions. The material was modified in a closed system under elevated pressure and controlled relative humidity (30 and 100% relative humidity) at temperatures between 150 and 170°C, and in an open system with a standard thermal modification procedure between 160 and 230°C. Modulus of elasticity, modulus of rupture, deflection and work in bending (in elastic and inelastic proportions) and the resistance to impact milling in high energy multiple impact tests were determined. Mass loss after each modification was also measured and correlated with the mechanical properties. Anatomical properties of selected modifications were analysed. There were no significant differences between open and closed system modifications in both mechanical and anatomical properties.
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| first_indexed | 2024-03-08T13:54:00Z |
| format | Article |
| id | doaj.art-3b82be9e24a94029b0e044c930fe57b3 |
| institution | Directory Open Access Journal |
| issn | 0717-3644 0718-221X |
| language | English |
| last_indexed | 2024-03-08T13:54:00Z |
| publishDate | 2019-04-01 |
| publisher | Universidad del Bío-Bío |
| record_format | Article |
| series | Maderas: Ciencia y Tecnología |
| spelling | doaj.art-3b82be9e24a94029b0e044c930fe57b32024-01-15T18:31:13ZengUniversidad del Bío-BíoMaderas: Ciencia y Tecnología0717-36440718-221X2019-04-012123340Dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor systemMaximilian WentzelChristian BrischkeHolger Militz Eucalyptus nitens is a fast growing plantation species that has a good acclimation in Chile. It is commonly used for pulp and paper, but there is a growing market for solid wood products made from this species and an interest on producing high quality material. Thermal modification technology have been used to obtain high quality product out of fast growing plantation species. In this study we modified Eucalyptus nitens to analyse the influences of the process conditions and evaluated its mechanical properties under several process conditions. The material was modified in a closed system under elevated pressure and controlled relative humidity (30 and 100% relative humidity) at temperatures between 150 and 170°C, and in an open system with a standard thermal modification procedure between 160 and 230°C. Modulus of elasticity, modulus of rupture, deflection and work in bending (in elastic and inelastic proportions) and the resistance to impact milling in high energy multiple impact tests were determined. Mass loss after each modification was also measured and correlated with the mechanical properties. Anatomical properties of selected modifications were analysed. There were no significant differences between open and closed system modifications in both mechanical and anatomical properties. https://revistas.ubiobio.cl/index.php/MCT/article/view/3340Bendingdeflectionhigh energy multiple impact testmodulus of elasticitymodulus of rupturewood anatomy |
| spellingShingle | Maximilian Wentzel Christian Brischke Holger Militz Dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor system Maderas: Ciencia y Tecnología Bending deflection high energy multiple impact test modulus of elasticity modulus of rupture wood anatomy |
| title | Dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor system |
| title_full | Dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor system |
| title_fullStr | Dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor system |
| title_full_unstemmed | Dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor system |
| title_short | Dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor system |
| title_sort | dynamic and static mechanical properties of eucalyptus nitens thermally modified in an open and closed reactor system |
| topic | Bending deflection high energy multiple impact test modulus of elasticity modulus of rupture wood anatomy |
| url | https://revistas.ubiobio.cl/index.php/MCT/article/view/3340 |
| work_keys_str_mv | AT maximilianwentzel dynamicandstaticmechanicalpropertiesofeucalyptusnitensthermallymodifiedinanopenandclosedreactorsystem AT christianbrischke dynamicandstaticmechanicalpropertiesofeucalyptusnitensthermallymodifiedinanopenandclosedreactorsystem AT holgermilitz dynamicandstaticmechanicalpropertiesofeucalyptusnitensthermallymodifiedinanopenandclosedreactorsystem |