{"id":10909,"date":"2022-07-18T12:10:59","date_gmt":"2022-07-18T10:10:59","guid":{"rendered":"https:\/\/ggba.swiss\/lepfl-devoile-un-plastique-semblable-au-pet-fabrique-a-partir-de-biomasse\/"},"modified":"2023-07-04T13:44:01","modified_gmt":"2023-07-04T11:44:01","slug":"lepfl-devoile-un-plastique-semblable-au-pet-fabrique-a-partir-de-biomasse","status":"publish","type":"post","link":"https:\/\/ggba.swiss\/fr\/lepfl-devoile-un-plastique-semblable-au-pet-fabrique-a-partir-de-biomasse\/","title":{"rendered":"L’EPFL d\u00e9voile un plastique semblable au PET fabriqu\u00e9 \u00e0 partir de biomasse"},"content":{"rendered":"\n

Pour s’affranchir des combustibles fossiles et \u00e9viter l’accumulation de plastiques dans l’environnement, des efforts consid\u00e9rables sont d\u00e9ploy\u00e9s pour mettre au point des polym\u00e8res d\u00e9gradables ou recyclables fabriqu\u00e9s \u00e0 partir de mati\u00e8res v\u00e9g\u00e9tales non comestibles, commun\u00e9ment d\u00e9nomm\u00e9es \u00ab\u00a0biomasse lignocellulosique\u00a0\u00bb.<\/p>\n

La fabrication de plastiques \u00e0 base de biomasse \u00e0 des tarifs comp\u00e9titifs n’est cependant pas simple. Ce n’est pas pour rien que les plastiques conventionnels sont si r\u00e9pandus, car ils combinent faible co\u00fbt, stabilit\u00e9 thermique, r\u00e9sistance m\u00e9canique, facilit\u00e9 de traitement et compatibilit\u00e9, des caract\u00e9ristiques que tout plastique de remplacement doit \u00e9galer, voire d\u00e9passer.<\/p>\n

Aujourd’hui, des scientifiques de la Facult\u00e9 des Sciences de base<\/a> de l’EPFL ont r\u00e9ussi \u00e0 d\u00e9velopper un plastique d\u00e9riv\u00e9 de la biomasse, similaire au PET, qui r\u00e9pond aux crit\u00e8res de substitution de plusieurs plastiques actuels tout en \u00e9tant plus respectueux de l’environnement.<\/p>\n

\u00ab\u00a0Nous cuisons <\/em>simplement le bois ou d\u2019autres mati\u00e8res v\u00e9g\u00e9tales non comestibles, comme les d\u00e9chets agricoles, dans des produits chimiques \u00e9conomiques pour fabriquer le plastique pr\u00e9curseur en une \u00e9tape\u00a0\u00bb, explique Jeremy Luterbacher. \u00ab\u00a0En gardant intacte la structure du sucre dans la structure mol\u00e9culaire finale du plastique, la chimie est beaucoup plus simple que les alternatives actuelles qui impliquent de nombreuses modifications.\u00a0\u00bb<\/p>\n

Une alternative prometteuse pour les emballages alimentaires<\/h4>\n

Les propri\u00e9t\u00e9s bien \u00e9quilibr\u00e9es de ces plastiques pourraient permettre de les utiliser dans des applications allant de l\u2019emballage ou le textile aux m\u00e9dicaments en passant par des composants de pi\u00e8ces \u00e9lectroniques. Les chercheuses et chercheurs ont d\u00e9j\u00e0 fabriqu\u00e9 des films d\u2019emballage, des fibres qui pourraient \u00eatre fil\u00e9es en v\u00eatements ou autres textiles, et des filaments pour l\u2019impression 3D.<\/p>\n

\u00ab\u00a0Ce type de plastique poss\u00e8de des propri\u00e9t\u00e9s tr\u00e8s int\u00e9ressantes, notamment pour des applications comme l\u2019emballage alimentaire\u00a0\u00bb, affirme Jeremy Luterbacher. \u00ab\u00a0Ce qui le rend unique c\u2019est la pr\u00e9sence de la structure intacte du sucre. Il est ainsi tr\u00e8s facile \u00e0 fabriquer car vous n\u2019avez pas \u00e0 modifier ce que vous donne la nature, et simple \u00e0 d\u00e9grader car il peut redevenir une mol\u00e9cule qui existe d\u00e9j\u00e0 en abondance dans la nature.\u00a0\u00bb<\/p>\n","protected":false},"excerpt":{"rendered":"

Des scientifiques de l’EPFL ont mis au point un nouveau plastique semblable au PET qui est facilement fabriqu\u00e9 \u00e0 partir de mati\u00e8re v\u00e9g\u00e9tale non comestibles.<\/p>\n","protected":false},"author":3,"featured_media":10910,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"mc4wp_mailchimp_campaign":[],"footnotes":""},"categories":[844],"tags":[1038,1070,1072,1081],"class_list":["post-10909","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cleantech","tag-education-fr","tag-plastics-fr","tag-rd-fr","tag-sustainability-fr"],"acf":[],"yoast_head":"\nL'EPFL d\u00e9voile un plastique semblable au PET fabriqu\u00e9 \u00e0 partir de biomasse - Greater Geneva Bern area<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ggba.swiss\/fr\/lepfl-devoile-un-plastique-semblable-au-pet-fabrique-a-partir-de-biomasse\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L'EPFL d\u00e9voile un plastique semblable au PET fabriqu\u00e9 \u00e0 partir de biomasse - 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