{"id":1482,"date":"2010-06-07T17:48:00","date_gmt":"2010-06-07T15:48:00","guid":{"rendered":"http:\/\/blogs.funiber.org\/pt\/?p=1482"},"modified":"2010-06-07T19:13:10","modified_gmt":"2010-06-07T17:13:10","slug":"plasticos-compostavel-a-base-de-acucar","status":"publish","type":"post","link":"https:\/\/www.funiber.blog\/pt\/meio-ambiente\/2010\/06\/07\/plasticos-compostavel-a-base-de-acucar","title":{"rendered":"Pl\u00e1stico compost\u00e1vel a base de a\u00e7\u00facar"},"content":{"rendered":"<p>A demanda por materiais mais amig\u00e1veis ao meio ambiente est\u00e1 aumentando. Neste novo cen\u00e1rio, no qual torna-se necess\u00e1rio uma maior oferta de pl\u00e1sticos ecol\u00f3gicos, pesquisadores de todo o mundo est\u00e3o se preocupando em criar m\u00e9todos que permitam fabricar pl\u00e1sticos compost\u00e1veis, que n\u00e3o contenham contaminantes para o meio ambiente. No Imperial College de Londres est\u00e1 em curso a pesquisa de uma metodologia de fabrica\u00e7\u00e3o que permitiria obter pl\u00e1sticos compost\u00e1veis a partir de a\u00e7\u00facares, conhecidos como biomassa lignocelul\u00f3tica.<\/p>\n<p><!--more-->A <a href=\"http:\/\/www.ch.ic.ac.uk\/williams\/index.html\">Dra. Charlotte K. Williams<\/a> dirige uma equipe de pesquisa de engenharia e ci\u00eancias f\u00edsicas cujo objetivo \u00e9 obter um pl\u00e1stico compost\u00e1vel que possa ser utilizado para armazenar alimentos. A motiva\u00e7\u00e3o da pesquisadora n\u00e3o s\u00f3 obedece a raz\u00f5es ambientalistas, como tamb\u00e9m a uma motiva\u00e7\u00e3o &#8220;econ\u00f4mica e de cadeia log\u00edstica&#8221;.<\/p>\n<p>Cerca de 7% do petr\u00f3leo e g\u00e1s do mundo se consomem na fabrica\u00e7\u00e3o de pl\u00e1sticos, com uma produ\u00e7\u00e3o que excede a 150 toneladas por ano, uma enorme quantidade de contaminantes, considerando 99% dos pl\u00e1sticos tem como base combust\u00edveis f\u00f3sseis.<\/p>\n<p>Os pl\u00e1sticos compost\u00e1veis s\u00e3o uma alternativa num mundo que demanda uma quantidade cada vez maior de produtos amig\u00e1veis com o meio ambiente. Deve-se evitar confundir os termos, um pl\u00e1stico biodegrad\u00e1vel n\u00e3o \u00e9 necessariamente compost\u00e1vel. De acordo com a America Society for Testing e Materials (ASTM) indica que um pl\u00e1stico compost\u00e1vel \u00e9 aquele que &#8220;experimenta degrada\u00e7\u00e3o biol\u00f3gica durante a forma\u00e7\u00e3o de compostos para produzir di\u00f3xido de carbono, \u00e1gua, compostos inorg\u00e2nicos e biomassa, a uma rapidez consistente com outros materiais compost\u00e1veis e folhas, sem res\u00edduos distingu\u00edveis visualmente nem res\u00edduos t\u00f3xicos&#8221;.<\/p>\n<p>&#8220;Para que o pl\u00e1stico seja \u00fatil deve ser poss\u00edvel fabrica\u00e7\u00e3o em grande escala, o que \u00e9 um desafio t\u00e9cnico. Foram necess\u00e1rios 3 anos e meio para obter uma redu\u00e7\u00e3o de 80% no uso de energia e \u00e1gua&#8221;, explica a Dra. Williams. A diferen\u00e7a dos pl\u00e1sticos recicl\u00e1veis \u00e9 que os pl\u00e1sticos compost\u00e1veis poderiam ser utilizados como adubo para o jardim. Atualmente est\u00e3o investigando poss\u00edveis aplica\u00e7\u00f5es destes materiais no setor m\u00e9dico.<\/p>\n<p>Williams indicou que os pl\u00e1sticos compost\u00e1veis poderiam ser utilizados em n\u00edvel industrial em 3 ou 5 anos.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A demanda por materiais mais amig\u00e1veis ao meio ambiente est\u00e1 aumentando. Neste novo cen\u00e1rio, no qual torna-se necess\u00e1rio uma maior oferta de pl\u00e1sticos ecol\u00f3gicos, pesquisadores de todo o mundo est\u00e3o se preocupando em criar m\u00e9todos que permitam fabricar pl\u00e1sticos compost\u00e1veis, que n\u00e3o contenham contaminantes para o meio ambiente. No Imperial College de Londres est\u00e1 em [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_newsletter_tier_id":0,"footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[2],"tags":[],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pl\u00e1stico compost\u00e1vel a base de a\u00e7\u00facar - FuniBlogs - FUNIBER<\/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:\/\/blogs.funiber.org\/pt\/meio-ambiente\/2010\/06\/07\/plasticos-compostavel-a-base-de-acucar\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pl\u00e1stico compost\u00e1vel a base de a\u00e7\u00facar - FuniBlogs - FUNIBER\" \/>\n<meta property=\"og:description\" content=\"A demanda por materiais mais amig\u00e1veis ao meio ambiente est\u00e1 aumentando. 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