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Advantage of vacuum versus nitrogen to achieve inert atmosphere during softwood thermal modification - Agritrop
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Candelier K茅vin, Dumar莽ay St茅phane, P茅trissans An茅lie, Gerardin Philippe, P茅trissans Mathieu. 2014. Pro Ligno, 10 (4) : 10-17.http://www.proligno.ro/en/ <http://www.proligno.ro/en/> " /> <meta name="DC.title" content="Advantage of vacuum versus nitrogen to achieve inert atmosphere during softwood thermal modification" /> <meta name="DC.creator" content="Candelier, K茅vin" /> <meta name="DC.creator" content="Dumar莽ay, St茅phane" /> <meta name="DC.creator" content="P茅trissans, An茅lie" /> <meta name="DC.creator" content="Gerardin, Philippe" /> <meta name="DC.creator" content="P茅trissans, Mathieu" /> <meta name="DC.language" content="eng" /> <meta name="DC.date" content="2014" /> <meta name="DC.publisher" content="Transylvania University of Brasov" /> <meta name="DC.source" content="Pro Ligno" /> <meta name="DC.subject" content="K50 - Technologie des produits forestiers" /> <meta name="DC.subject" content="J12 - Manutention, transport, stockage et conservation des produits forestiers" /> <meta name="DC.subject" content="bois" /> <meta name="DC.subject" content="traitement thermique" /> <meta name="DC.subject" content="technologie du bois" /> <meta name="DC.subject" content="pr茅servation du bois" /> <meta name="DC.subject" content="durabilit茅" /> <meta name="DC.subject" content="propri茅t茅 physicochimique" /> <meta name="DC.subject" content="propri茅t茅 m茅canique" /> <meta name="DC.subject" content="temp茅rature" /> <meta name="DC.subject" content="composition chimique" /> <meta name="DC.subject" content="technique analytique" /> <meta name="DC.subject" content="Abies alba" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_8421" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_24947" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_28195" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_8428" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_33560" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_1521" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_4683" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_7657" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_1794" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_1513" /> <meta name="DC.subject" content="http://aims.fao.org/aos/agrovoc/c_11" /> <meta name="DC.description" content="Wood heat treatment is an attractive alternative to improve decay resistance of wood species with low natural durability. Durability and mechanical properties are strongly correlated to thermal degradation of wood cells wall components. Mass loss resulting from this degradation is a good indicator of treatment intensity and final treated wood properties. Several types of convective heating processes exist currently differing mainly by the nature of the inert atmosphere used during treatment: nitrogen, steam or oil. Conductive heat treatment using vacuum as inert atmosphere is an attractive new alternative to previous classical methods. Heat transfer by conduction has been reported to provide better treatment homogeneity than heat transfer using convection. The aim of this study is to investigate the effect of vacuum comparatively to nitrogen on the thermal degradation pathways and on the conferred properties tothe material. It appears that utilization of vacuum permit a better control of thermal degradation reactions limiting the mass loss resulting from degradation of wood cell wall polymers. Chemical analysis indicates that wood heat treated under nitrogen present higher Klasonlignin and carbon contents, lower hemicelluloses and neutral monosaccharides contents comparatively to wood heat treated under vacuum. At the same time, mechanical properties are less affected under vacuum, which constitute another advantage of this technology." /> <meta name="DC.type" content="article" /> <meta name="DC.type" content="info:eu-repo/semantics/article" /> <meta name="DC.type" content="Journal Article" /> <meta name="DC.type" content="info:eu-repo/semantics/publishedVersion" /> <meta name="DC.identifier" content="http://agritrop.cirad.fr/579910/1/2014_ProLigno_ADVANTAGE%20OF%20VACUUM%20VERSUS%20NITROGEN%20TO%20ACHIEVE%20INERT%20ATMOSPHERE%20DURING%20SOFTWOOD%20THERMAL%20MODIFICATION.pdf" /> <meta name="DC.format" content="text" /> <meta name="DC.rights" content="Cirad license" /> <meta name="DC.rights" content="info:eu-repo/semantics/openAccess" /> <meta name="DC.rights" content="https://agritrop.cirad.fr/mention_legale.html" /> <meta name="DC.relation" content="http://www.proligno.ro/en/" /> <meta name="DC.relation" content="info:eu-repo/semantics/altIdentifier/purl/http://www.proligno.ro/en/" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/DC/agritrop-eprint-579910.txt" type="text/plain; charset=utf-8" title="Dublin Core" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/Atom/agritrop-eprint-579910.xml" type="application/atom+xml;charset=utf-8" title="Atom" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/Simple/agritrop-eprint-579910.txt" type="text/plain; charset=utf-8" title="Simple Metadata" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/HTML/agritrop-eprint-579910.html" type="text/html; charset=utf-8" title="HTML Citation" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/Text/agritrop-eprint-579910.txt" type="text/plain; charset=utf-8" title="ASCII Citation" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/EndNote/agritrop-eprint-579910.enw" type="application/x-endnote-refer; charset=utf-8" title="EndNote" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/CrdEndNoteIntranet/agritrop-eprint-579910.enw" type="application/x-endnote-refer; charset=utf-8" title="EndNote-Indicateurs (agents Cirad)" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/RIS/agritrop-eprint-579910.ris" type="text/plain; charset=utf-8" title="Zotero - Reference Manager (RIS)" /> <link rel="alternate" href="http://agritrop.cirad.fr/cgi/export/eprint/579910/CSV/agritrop-eprint-579910.csv" type="text/csv; charset=utf-8" title="CSV" /> <link rel="Top" href="http://agritrop.cirad.fr/" /> <link rel="Sword" href="https://agritrop.cirad.fr/sword-app/servicedocument" /> <link rel="SwordDeposit" href="https://agritrop.cirad.fr/id/contents" /> <link rel="Search" type="text/html" href="http://agritrop.cirad.fr/cgi/search" /> <link rel="Search" type="application/opensearchdescription+xml" href="http://agritrop.cirad.fr/cgi/opensearchdescription" /> <script type="text/javascript" src="https://www.google.com/jsapi"><!--padder--></script><script type="text/javascript"> // <![CDATA[ google.load("visualization", "1", {packages:["corechart", "geochart"]}); // ]]></script><script type="text/javascript"> // <![CDATA[ var eprints_http_root = "https:\/\/agritrop.cirad.fr"; var eprints_http_cgiroot = "https:\/\/agritrop.cirad.fr\/cgi"; var eprints_oai_archive_id = "agritrop.cirad.fr"; var eprints_logged_in = false; // ]]></script> <style type="text/css">.ep_logged_in { display: none }</style> <link rel="stylesheet" type="text/css" href="/style/auto-3.3.12.css" /> <script type="text/javascript" src="/javascript/auto-3.3.12.js"><!--padder--></script> <!--[if lte IE 6]> <link rel="stylesheet" type="text/css" href="/style/ie6.css" /> <![endif]--> <meta name="Generator" content="EPrints 3.3.12" /> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta http-equiv="Content-Language" content="fr" /> <!-- AJOUT DE LA POPUP COOKIE CONSENT --> <link rel="stylesheet" type="text/css" href="//cdn.jsdelivr.net/npm/cookieconsent@3/build/cookieconsent.min.css" /> <script src="//cdn.jsdelivr.net/npm/cookieconsent@3/build/cookieconsent.min.js" data-cfasync="false">// <!-- No script --></script> <script> var CoCoTxt = "En cliquant sur [Accepter], vous autorisez l'utilisation des cookies qui analysent la fr茅quentation du site. 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Voir ci-dessous la version la plus simple --> <span class="persons"><strong class="person ">Candelier K茅vin</strong>, <strong class="person ">Dumar莽ay St茅phane</strong>, <strong class="person ">P茅trissans An茅lie</strong>, <strong class="person ">Gerardin Philippe</strong>, <strong class="person ">P茅trissans Mathieu</strong></span>. 2014<!-- -->. Advantage of vacuum versus nitrogen to achieve inert atmosphere during softwood thermal modification. <em> Pro Ligno</em><!-- -->, <b>10</b><!-- --> (4)<!-- --><!-- --><!-- --><!-- --> : 10-17.<!-- --><!-- --><!-- --><div class="official_url"><a href="http://www.proligno.ro/en/">http://www.proligno.ro/en/</a></div> </p> <div class="summary_type"> Article de revue<!-- --> ; Article de recherche<!-- --> ; Article de revue 脿 comit茅 de lecture <img src="/images/logoOpenAccess.svg" width="50px" alt="Revue en libre acc猫s total" title="revue en acc猫s libre" /> </div> <div class="liste_documents"> <table> <tr> <td valign="top" align="right"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_145127' );" href="http://agritrop.cirad.fr/579910/1/2014_ProLigno_ADVANTAGE%20OF%20VACUUM%20VERSUS%20NITROGEN%20TO%20ACHIEVE%20INERT%20ATMOSPHERE%20DURING%20SOFTWOOD%20THERMAL%20MODIFICATION.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_145127' );" class="ep_document_link"><img class="ep_doc_icon" alt="[img]" src="/style/images/fileicons/text.png" data-src="http://agritrop.cirad.fr/579910/1.hassmallThumbnailVersion/2014_ProLigno_ADVANTAGE%20OF%20VACUUM%20VERSUS%20NITROGEN%20TO%20ACHIEVE%20INERT%20ATMOSPHERE%20DURING%20SOFTWOOD%20THERMAL%20MODIFICATION.pdf" loading="lazy" border="0" /></a><div id="doc_preview_145127" class="ep_preview"><table><tr><td><img class="ep_preview_image" alt="" src="http://agritrop.cirad.fr/579910/1.haspreviewThumbnailVersion/2014_ProLigno_ADVANTAGE%20OF%20VACUUM%20VERSUS%20NITROGEN%20TO%20ACHIEVE%20INERT%20ATMOSPHERE%20DURING%20SOFTWOOD%20THERMAL%20MODIFICATION.pdf" loading="lazy" border="0" /><div class="ep_preview_title">Pr茅visualisation</div></td></tr></table></div></td> <td valign="top"> <span class="ep_document_citation"> <span class="document_format"></span> Version publi茅e - Anglais <br /> Utilisation soumise 脿 autorisation de l'auteur ou du Cirad. <br /><span class="document_filename">2014_ProLigno_ADVANTAGE OF VACUUM VERSUS NITROGEN TO ACHIEVE INERT ATMOSPHERE DURING SOFTWOOD THERMAL MODIFICATION.pdf</span> </span> <br /> <a href="http://agritrop.cirad.fr/579910/1/2014_ProLigno_ADVANTAGE%20OF%20VACUUM%20VERSUS%20NITROGEN%20TO%20ACHIEVE%20INERT%20ATMOSPHERE%20DURING%20SOFTWOOD%20THERMAL%20MODIFICATION.pdf" class="ep_document_link">T茅l茅charger (167kB)</a> | <a href="http://agritrop.cirad.fr/579910/1.haslightboxThumbnailVersion/2014_ProLigno_ADVANTAGE%20OF%20VACUUM%20VERSUS%20NITROGEN%20TO%20ACHIEVE%20INERT%20ATMOSPHERE%20DURING%20SOFTWOOD%20THERMAL%20MODIFICATION.pdf" rel="lightbox[docs] nofollow" title=" <span class="ep_document_citation" xmlns="http://www.w3.org/1999/xhtml" xmlns:cite="http://eprints.org/ep3/citation" xmlns:epc="http://eprints.org/ep3/control"> <a class="ep_document_link" href="http://agritrop.cirad.fr/579910/1/2014_ProLigno_ADVANTAGE%20OF%20VACUUM%20VERSUS%20NITROGEN%20TO%20ACHIEVE%20INERT%20ATMOSPHERE%20DURING%20SOFTWOOD%20THERMAL%20MODIFICATION.pdf"><span class="document_format"></span></a> Version publi茅e - Anglais <br /> Utilisation soumise 脿 autorisation de l'auteur ou du Cirad. <br /><span class="document_filename">2014_ProLigno_ADVANTAGE OF VACUUM VERSUS NITROGEN TO ACHIEVE INERT ATMOSPHERE DURING SOFTWOOD THERMAL MODIFICATION.pdf</span> </span> ">Pr茅visualisation</a> <ul> </ul> </td> </tr> </table> </div> <!-- affichage des urls sur 1 ligne par url <epc:foreach expr="related_url" iterator="relu"> <p class="related_url"><span><epc:phrase ref="related_url_type_typename_{$relu{type}}"/> : </span><a href="{$relu{url}}"><epc:print expr="$relu{url}" /></a></p> </epc:foreach> --> <p></p> <p></p> <!-- champs en attente non affich茅s pour l'instant <epc:if test="ispublished"> <p class="summary_type"><span><epc:phrase ref="eprint_fieldname_ispublished"/> : </span><epc:print expr="ispublished" /></p> </epc:if> <epc:if test="date_diffusion"> <p class="summary_champs"><span><epc:phrase ref="eprint_fieldname_date_diffusion"/> : </span><epc:print expr="date_diffusion" /></p> </epc:if> --> <p></p> <!-- <epc:if test="notoriete_shs"> <p class="summary_indicateur"><span><epc:phrase ref="eprint_fieldname_notoriete_shs"/> : </span> <epc:if test="notoriete_shs='non'">sans</epc:if> <epc:if test="notoriete_shs='oui'"><epc:phrase ref="notoriete_shs_typename_oui"/></epc:if></p> </epc:if> --> <p class="summary_champs summary_resume LG_1459 res_long"> <span title="res_long 1459 car.">R茅sum茅 :</span> Wood heat treatment is an attractive alternative to improve decay resistance of wood species with low natural durability. Durability and mechanical properties are strongly correlated to thermal degradation of wood cells wall components. Mass loss resulting from this degradation is a good indicator of treatment intensity and final treated wood properties. Several types of convective heating processes exist currently differing mainly by the nature of the inert atmosphere used during treatment: nitrogen, steam or oil. Conductive heat treatment using vacuum as inert atmosphere is an attractive new alternative to previous classical methods. Heat transfer by conduction has been reported to provide better treatment homogeneity than heat transfer using convection. The aim of this study is to investigate the effect of vacuum comparatively to nitrogen on the thermal degradation pathways and on the conferred properties tothe material. It appears that utilization of vacuum permit a better control of thermal degradation reactions limiting the mass loss resulting from degradation of wood cell wall polymers. Chemical analysis indicates that wood heat treated under nitrogen present higher Klasonlignin and carbon contents, lower hemicelluloses and neutral monosaccharides contents comparatively to wood heat treated under vacuum. At the same time, mechanical properties are less affected under vacuum, which constitute another advantage of this technology. </p> <!-- Mots cl茅s --> <p><span>Mots-cl茅s Agrovoc :</span> <a href="http://agritrop.cirad.fr/view/agrovoc_mat/bois.html">bois</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/traitement_thermique.html">traitement thermique</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/technologie_du_bois.html">technologie du bois</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/pr=E9servation_du_bois.html">pr茅servation du bois</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/durabilit=E9.html">durabilit茅</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/propri=E9t=E9_physicochimique.html">propri茅t茅 physicochimique</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/propri=E9t=E9_m=E9canique.html">propri茅t茅 m茅canique</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/temp=E9rature.html">temp茅rature</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/composition_chimique.html">composition chimique</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/technique_analytique.html">technique analytique</a>, <a href="http://agritrop.cirad.fr/view/agrovoc_mat/Abies_alba.html">Abies alba</a></p> <p><span>Mots-cl茅s compl茅mentaires :</span> <a href="http://agritrop.cirad.fr/view/candidat_mat/Durabilit=E9_naturelle.html">Durabilit茅 naturelle</a></p> <p class="summary_subjects"><span>Classification Agris : </span><a href="http://agritrop.cirad.fr/view/subjects/K50.html">K50 - Technologie des produits forestiers</a><br /><a href="http://agritrop.cirad.fr/view/subjects/J12.html">J12 - Manutention, transport, stockage et conservation des produits forestiers</a></p> <p class="summary_axe"><span>Champ strat茅gique Cirad : </span><a href="http://agritrop.cirad.fr/view/axe_strategique/2AXS2014.html">Axe 2 (2014-2018) - Valorisation de la biomasse</a></p> <!-- Champs du projet de financement - JL 脿 supprimer pour la v2 --> <!-- JL Champs OpenAIre --> <!-- JL Agence de financement Hors-Europe --> <!-- Ajout GF --> <!-- Fin Ajout GF --> <p class="summary_champs"><span>Auteurs et affiliations</span></p> <ul> <li> Candelier K茅vin<!-- -->, CIRAD-PERSYST-UPR BioWooEB (FRA)<!-- --> <a class="orcid" href="https://orcid.org/0000-0002-9328-8511" target="_blank"><img src="/images/orcid_16x16.png" /><span class="orcid-tooltip">ORCID: 0000-0002-9328-8511</span></a><!-- --><i></i> </li> <li> Dumar莽ay St茅phane<!-- -->, Universit茅 de Nancy I (FRA)<!-- --><!-- --><i></i> </li> <li> P茅trissans An茅lie<!-- -->, Universit茅 de Nancy I (FRA)<!-- --><!-- --><i></i> </li> <li> Gerardin Philippe<!-- -->, Universit茅 de Nancy I (FRA)<!-- --><!-- --><i></i> </li> <li> P茅trissans Mathieu<!-- -->, Universit茅 de Nancy I (FRA)<!-- --><!-- --><i></i> </li> </ul> <p class="summary_champs"><span>Source : </span>Cirad-Agritrop (https://agritrop.cirad.fr/579910/)</p> <!-- JL fonction export --> <div style="ep_block"><form method="get" accept-charset="utf-8" action="/cgi/export_redirect"><input name="dataobj" id="dataobj" value="579910" type="hidden" /><select name="format"><option value="DC">Dublin Core</option><option value="Atom">Atom</option><option value="Simple">Simple Metadata</option><option value="HTML">HTML Citation</option><option value="Text">ASCII Citation</option><option value="EndNote">EndNote</option><option value="CrdEndNoteIntranet">EndNote-Indicateurs (agents Cirad)</option><option value="RIS">Zotero - Reference Manager (RIS)</option><option value="CSV">CSV</option></select><input type="submit" value="Exporter" class="ep_form_action_button" /></form></div> <!-- INDICATEURS --> <button id="btn-show-indicateurs" onclick="jQuery('#stats').toggle('slow')"> M茅triques </button> <div id="stats" style="display:none"> <!-- epc:phrase ref="lib/irstats2:embedded:summary_page:eprint:downloads" / --> <h3 class="irstats2_summary_page_header">T茅l茅chargements Agritrop</h3> <div class="irstats2_summary_page_container"> <p>T茅l茅chargements de la publication</p> <div id="irstats2_summary_page_downloads" class="irstats2_graph"></div> <!--<p style="text-align:center"><a href="#" id="irstats2_summary_page:link">View more statistics</a></p> --> </div> <script> document.observe("dom:loaded",function(){ var irstats2_summary_page_eprintid = '579910'; 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