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Thermal stability of Abies alba wood according to its radial position and forest management

Authors
  • Hamada, Joël1
  • Pétrissans, Anélie1
  • Ruelle, Julien2
  • Mothe, Frédéric2
  • Colin, Francis2
  • Pétrissans, Mathieu1
  • Gérardin, Philippe1
  • 1 Université de Lorraine, Inra, EA 4370 USC 1445 LERMAB, Faculté des Sciences et Technologies, Vandoeuvre-lès-Nancy Cedex, 54506, France , Vandoeuvre-lès-Nancy Cedex (France)
  • 2 Université de Lorraine, AgroParisTech, Inra, UMR 1434 SILVA, Centre Inra Grand-Est Nancy, Route d’Amance, Champenoux, 54280, France , Champenoux (France)
Type
Published Article
Journal
European Journal of Wood and Wood Products
Publisher
Springer Berlin Heidelberg
Publication Date
Sep 24, 2018
Volume
76
Issue
6
Pages
1669–1676
Identifiers
DOI: 10.1007/s00107-018-1353-5
Source
Springer Nature
License
Yellow

Abstract

Most of the defects affecting heat-treated wood quality are often attributed to heterogeneous heat transfers in industrial kilns. Even if interspecific variability of wood has been reported to affect thermal degradation of the material, little has been reported on the effects of intraspecific variability. The aim of this work was to study the effect of intraspecific variability of silver fir (Abies alba Mill.) wood on its thermal degradation. For this purpose, wood samples were sampled along the radius of cross-sections to estimate the effect of radial position on wood thermal degradation. Sampling was carried out on discs of four trees, two resulting from dynamic growth stand and two from standard growth stand. The study was performed at different scales: at wood compartments scale involving juvenile and mature heartwood, transition zone between heartwood and sapwood and sapwood as well as at intra-ring scale. Wood samples were ground to sawdust and subjected to thermogravimetric analysis and chemical analysis. Juvenile heartwood was shown to be more sensitive to thermal degradation than other compartments. The thermal behavior of sapwood was not particularly different from that of heartwood, and the presence of extractives did not influence significantly thermal degradation. Earlywood was more sensitive to thermal degradation than latewood explaining the higher susceptibility of fast growing heartwood containing larger rings with higher contents of earlywood.

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