{"id":1456,"date":"2015-07-18T08:50:03","date_gmt":"2015-07-18T06:50:03","guid":{"rendered":"http:\/\/ist.blogs.inra.fr\/afs\/?p=1456"},"modified":"2015-07-18T08:53:31","modified_gmt":"2015-07-18T06:53:31","slug":"variations-in-the-natural-density-of-european-oak-wood-affect-thermal-degradation-during-thermal-modification","status":"publish","type":"post","link":"https:\/\/ist.blogs.inrae.fr\/afs\/2015\/07\/18\/variations-in-the-natural-density-of-european-oak-wood-affect-thermal-degradation-during-thermal-modification\/","title":{"rendered":"Variations in the natural density of European oak wood affect thermal degradation during thermal modification"},"content":{"rendered":"<script type='text\/javascript' src='https:\/\/d1bxh8uas1mnw7.cloudfront.net\/assets\/embed.js'><\/script><p id=\"Par1\" class=\"Para ParaOneEmphasisChild\" style=\"text-align: justify\"><strong class=\"EmphasisTypeBold\">Thermogravimetric analysis, performed on small samples of earlywood (EW) or latewood (LW), indicated that earlywood is more susceptible to thermal degradation than latewood. These results suggest a direct relationship between wood density (which depends on the EW\/LW ratio and indirectly on silviculture) and the response of wood during thermo-modification processes.<\/strong><\/p>\n<div class=\"abstract-content formatted\">\n<h3 class=\"Heading\"><span class=\"EmphasisTypeBoldItalic\">Abstract<\/span><\/h3>\n<p id=\"Par6\" class=\"Para\" style=\"text-align: justify\">One of the main difficulties in developing thermo-modified wood products at an industrial scale lies in the difficulty of obtaining consistent products with a stable quality (durability, dimensional stability, color). This may be due either to the thermal treatment process itself or to inter- or intra-specific heterogeneity of wood properties. We investigated the effect of the natural variability of oak wood, particularly in density, on the degree of thermo-degradation during thermal treatments. X-ray computed tomography was used to assess the effect of initial wood density of oak boards on their thermo-degradation. Intra-ring wood density was estimated using thermogravimetric analysis and micro-densitometry. X-ray CT did not allow establishment of a clear correlation between initial wood density and mass loss due to thermo-degradation, while thermogravimetric analysis, performed separately on earlywood and latewood samples, revealed a larger susceptibility to thermal degradation of the less dense earlywood samples compared to more dense latewood samples. Initial wood density, which is directly controlled by the earlywood\/latewood ratio modulated by silvicultural practices, directly influences thermo-degradation during thermal treatment. Initial wood density therefore appears to be a potential parameter influencing industrial thermal treatment processes.<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<div class='altmetric-embed' data-badge-type='donut' data-doi='10.1007\/s13595-015-0499-0'  style='float: right; ' ><\/div>\n<p>&nbsp;<\/p>\n<hr \/>\n<p><em>Publication<\/em><\/p>\n<p>Hamada J, P\u00e9trissans A, Mothe F, Ruelle J, P\u00e9trissans M, G\u00e9rardin P 2015. Variations in the natural density of European oak wood affect thermal degradation during thermal modification. Ann. For. Sci.: 1-10. 10.1007\/s13595-015-0499-0.<\/p>\n<p><a href=\"http:\/\/link.springer.com\/article\/10.1007\/s13595-015-0499-0\">Read the full paper<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thermogravimetric analysis, performed on small samples of earlywood (EW) or latewood (LW), indicated that earlywood is more susceptible to thermal degradation than latewood. These results suggest a direct relationship between wood density (which depends on the EW\/LW ratio and indirectly on silviculture) and the response of wood during thermo-modification processes. Abstract One of the main [&hellip;]<\/p>\n","protected":false},"author":35,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1456","post","type-post","status-publish","format-standard","hentry","category-research-paper","cat-15-id"],"_links":{"self":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/1456","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/users\/35"}],"replies":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/comments?post=1456"}],"version-history":[{"count":0,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/1456\/revisions"}],"wp:attachment":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/media?parent=1456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/categories?post=1456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/tags?post=1456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}