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http://hdl.handle.net/10400.19/4300
Título: | Comparison between heat treated sapwood and heartwood from Pinus pinaster |
Autor: | Esteves, Bruno Nunes, Lina Domingos, Idalina Pereira, Helena |
Palavras-chave: | Dimensional stability Durability Heartwood Heat treatment Mechanical properties Sapwood |
Data: | 2014 |
Editora: | Springer |
Citação: | Esteves, B., Nunes, L., Domingos, I., & Pereira, H. (2014). Comparison between heat treated sapwood and heartwood from Pinus pinaster. European Journal of Wood and Wood Products, 72(1), 53–60. doi:10.1007/s00107-013-0751-y. |
Resumo: | Sapwood and heartwood samples of Pinus pinaster were treated in an oven at 190ºC and 200ºC for 2-6h. Dimensional stability, measured as Anti Shrinking Efficiency (ASE) between 0% and 65% relative humidity, durability against fungi, mechanical resistance (MOE and MOR), hardness and chemical composition were determined for treated and untreated sapwood and heartwood. Radial ASE reached 52% for sapwood and 50% for heartwood while tangential ASE reached 50% and 40% respectively. MOE increased slightly at the beginning of the treatment decreasing afterwards. No significant differences were found between sapwood and heartwood. MOR decreased by 50% and 30% for sapwood and heartwood respectively. A significant increase in durability against Rhodonia placenta was found for both heartwood and sapwood at the higher temperature and for heartwood only at 190º for 4h. |
Peer review: | yes |
URI: | http://hdl.handle.net/10400.19/4300 |
DOI: | 10.1007/s00107-013-0751-y |
ISSN: | 0018-3768 1436-736X |
Versão do Editor: | http://link.springer.com/article/10.1007/s00107-013-0751-y |
Aparece nas colecções: | ESTGV - DEM - Artigo em revista científica, indexada ao WoS/Scopus |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Sapwwood vs heartwood_WST rev.pdf | 363,81 kB | Adobe PDF | Ver/Abrir |
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