Thermo-Vacuum Modification of Teak Wood from Fast-Growth Plantation
| Autor: | Mario Espinoza, Francesco Negro, Roberto Zanuttini, Ignazia Cuccui, Ottaviano Allegretti |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
040101 forestry
0106 biological sciences Lightness Environmental Engineering Materials science biology lcsh:Biotechnology Bioengineering 04 agricultural and veterinary sciences Thermal treatment Atmospheric temperature range biology.organism_classification Pulp and paper industry 01 natural sciences Process conditions Horticulture Tectona lcsh:TP248.13-248.65 010608 biotechnology Teak Sapwood Heartwood Colour 0401 agriculture forestry and fisheries Optimal combination Waste Management and Disposal |
| Zdroj: | Bioresources 12 (2017): 1903–1915. doi:10.15376/biores.12.1.1903-1915 info:cnr-pdr/source/autori:Cuccui I., Negro F., Zanuttini R., Espinoza M., Allegretti O./titolo:Thermo-Vacuum Modification of Teak Wood from Fast-Growth Plantation/doi:10.15376%2Fbiores.12.1.1903-1915/rivista:Bioresources/anno:2017/pagina_da:1903/pagina_a:1915/intervallo_pagine:1903–1915/volume:12 BioResources, Vol 12, Iss 1, Pp 1903-1915 (2017) |
| Popis: | Sawnwood of teak (Tectona grandis L. f.) from a Costa Rica plantation was thermally treated at different process conditions using thermo-vacuum technology. The main objectives of the study were to find the optimal combination of the process parameters, i.e. temperature (T), and duration (t), in order to minimise the colorimetric difference between sapwood and heartwood, and to evaluate the influence of the treatment on the modification pattern of physical properties of the material. The resulting mass loss (ML), hygroscopicity (H), dimensional stability (ASE), and lightness (L) were measured and compared. As expected, the temperature (T) is the main parameter influencing the extent of modification. The measured ML values turned out to be moderate even at high T values if compared with other hardwoods. The temperature range between 180 °C and 190 °C minimizes the colorimetric difference between treated sapwood and not treated heartwood. |
| Databáze: | OpenAIRE |
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