{"id":2324,"date":"2014-07-12T17:50:59","date_gmt":"2014-07-12T22:50:59","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=2324"},"modified":"2014-07-12T17:50:59","modified_gmt":"2014-07-12T22:50:59","slug":"reveler-le-secret-de-la-durabilite-de-lambre","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/reveler-le-secret-de-la-durabilite-de-lambre\/","title":{"rendered":"R\u00e9v\u00e9ler le secret de la durabilit\u00e9 de l&#8217;ambre<img src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/01\/canada_flag_icon_small.gif\">"},"content":{"rendered":"<div id=\"attachment_2320\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/ambercropHR2.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2320\" class=\"size-medium wp-image-2320\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/ambercropHR2-300x287.jpg\" alt=\"L\u2019ambre est un mat\u00e9riau extr\u00eamement durable, bien plus que les polym\u00e8res artificiels. Des chercheurs ont utilis\u00e9 une technique de combustion lente afin de mieux comprendre la structure chimique qui d\u00e9tient le secret de la durabilit\u00e9 de l\u2019ambre. (Photo :  gouvernement du Canada, Institut canadien de conservation, CCI 123773-0025)\" width=\"300\" height=\"287\" srcset=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/ambercropHR2-300x287.jpg 300w, http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/ambercropHR2.jpg 400w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-2320\" class=\"wp-caption-text\">L\u2019ambre est un mat\u00e9riau extr\u00eamement durable, bien plus que les polym\u00e8res artificiels. Des chercheurs ont utilis\u00e9 une technique de combustion lente afin de mieux comprendre la structure chimique qui d\u00e9tient le secret de la durabilit\u00e9 de l\u2019ambre. (Photo : gouvernement du Canada, Institut canadien de conservation, CCI 123773-0025)<\/p><\/div>\n<p><span style=\"color: #222222;\">Une nouvelle technique d\u2019analyse permet de mieux comprendre au point de vue chimique la durabilit\u00e9 de l\u2019ambre, ce qui pourrait nous servir \u00e0 concevoir de nouveaux mat\u00e9riaux plus durables. L\u2019ambre est un polym\u00e8re compos\u00e9 de r\u00e9sine de conif\u00e8res fossilis\u00e9e et peut durer des millions d\u2019ann\u00e9es, bien plus longtemps que les polym\u00e8res artificiels. <\/span><\/p>\n<p><span style=\"color: #222222;\">Des chercheurs ont tent\u00e9 d\u2019isoler les constituantes du polym\u00e8re, mais leur encha\u00eenement exact \u00e9tait encore inconnu. Maintenant, des scientifiques ont d\u00e9velopp\u00e9 une nouvelle technique d\u2019analyse qui leur permet de briser l\u2019ambre en blocs plut\u00f4t qu\u2019en constituantes individuelles ce qui leur permet de mieux comprendre sa structure. <\/span><\/p>\n<p><span style=\"color: #222222;\">Cette meilleure compr\u00e9hension les aidera entre autres \u00e0 identifier la provenance de l\u2019ambre dans des bijoux anciens.<\/span><\/p>\n<p>Pour lire l\u2019article original publi\u00e9 dans<em>\u00a0Analytical Chemistry<span style=\"color: #000000;\">\u00a0<\/span><\/em>le\u00a0<strong>19 juillet\u00a0<\/strong><strong>2014<\/strong>,\u00a0<span style=\"text-decoration: underline;\"><span><a href=\"http:\/\/pubs.acs.org\/doi\/abs\/10.1021\/ac501073k\" target=\"_blank\">cliquez\u00a0ici<\/a><\/span><\/span>.<\/p>\n<p><span style=\"text-decoration: underline;\"><span><em><strong>Auteur \u00e0 contacter pour plus d\u2019informations<\/strong><\/em><\/span><\/span><\/p>\n<h4><span style=\"color: #222222;\">Jennifer Poulin, Institut canadien de conservation<\/span><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Une nouvelle technique d\u2019analyse permet de mieux comprendre au point de vue chimique la durabilit\u00e9 de l\u2019ambre, ce qui pourrait nous servir \u00e0 concevoir de nouveaux mat\u00e9riaux plus durables. L\u2019ambre est un polym\u00e8re compos\u00e9 de r\u00e9sine de conif\u00e8res fossilis\u00e9e et peut durer des millions d\u2019ann\u00e9es, bien plus longtemps que les polym\u00e8res artificiels. Des chercheurs ont [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2320,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[531],"tags":[1915,637,1303,1916,1914],"class_list":["post-2324","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest-fr","tag-archeologie-fr","tag-canada","tag-chimie","tag-construction-fr","tag-polymeres"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/07\/ambercropHR2.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-Bu","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=2324"}],"version-history":[{"count":1,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2324\/revisions"}],"predecessor-version":[{"id":2326,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2324\/revisions\/2326"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/2320"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=2324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=2324"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=2324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}