{"id":202238,"date":"2020-05-04T06:48:56","date_gmt":"2020-05-04T06:48:56","guid":{"rendered":"https:\/\/afrikmag.com\/var\/www\/vhosts\/afrikmag.compublic_html\/?p=202238"},"modified":"2020-05-04T06:51:23","modified_gmt":"2020-05-04T06:51:23","slug":"covid-19-les-scientifiques-revelent-le-meilleur-materiel-pour-fabriquer-un-masque","status":"publish","type":"post","link":"https:\/\/afrikmag.com\/var\/www\/vhosts\/afrikmag.compublic_html\/covid-19-les-scientifiques-revelent-le-meilleur-materiel-pour-fabriquer-un-masque\/","title":{"rendered":"Covid-19: des chercheurs am\u00e9ricains r\u00e9v\u00e8lent le meilleur mat\u00e9riel pour fabriquer un masque"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Dans le but de trouver le mat\u00e9riel appropri\u00e9 pour retenir les particules fines a\u00e9rosolis\u00e9es et prot\u00e9ger les personnes contre la transmission du virus, les chercheurs am\u00e9ricains ont proc\u00e9d\u00e9 par plusieurs tests de diff\u00e9rents tissus. D&rsquo;apr\u00e8s une \u00e9tude publi\u00e9e sur ACS Publications, ils sont parvenus \u00e0 la conclusion que les masques \u00e0 base de tissus hybrides pouvaient retenir et filtrer un grand nombre de particules inhal\u00e9es.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ce sont les chercheurs du laboratoire national d&rsquo;Argonne et de l&rsquo;universit\u00e9 de Chicago qui ont proc\u00e9d\u00e9 \u00e0 l&rsquo;\u00e9valuation&nbsp;des tissus naturels&nbsp;et synth\u00e9tiques populaires pour tester leurs capacit\u00e9s \u00e0 arr\u00eater les particules fines a\u00e9rosolis\u00e9es. Pendant les travaux, ils avaient pour mission de d\u00e9terminer quels mat\u00e9riaux pouvaient mieux retenir les particules virales lors de l&rsquo;expiration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C&rsquo;est \u00e0 l\u2019aide d\u2019un appareil sp\u00e9cial que le test du passage des particules \u00e0 travers diff\u00e9rents types de tissus a \u00e9t\u00e9 effectu\u00e9. Par la suite, les chercheurs ont pr\u00e9lev\u00e9 des \u00e9chantillons d&rsquo;air.\u00a0L\u2019appareil a fait traverser les particules de 10 nanom\u00e8tres \u00e0 10 microm\u00e8tres dans du coton, de la soie, du chiffon, de la flanelle et divers mat\u00e9riaux synth\u00e9tiques.<\/p>\n\n\n\n<figure class=\"wp-block-embed-wordpress wp-block-embed is-type-wp-embed is-provider-afrikmag\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"JsTGqGQZe6\"><a href=\"https:\/\/afrikmag.com\/var\/www\/vhosts\/afrikmag.compublic_html\/madagascar-folle-ruee-pour-le-medicament-qui-guerit-le-coronavirus-video\/\">Madagascar : folle ru\u00e9e pour le m\u00e9dicament qui gu\u00e9rit le coronavirus (vid\u00e9o)<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u00ab\u00a0Madagascar : folle ru\u00e9e pour le m\u00e9dicament qui gu\u00e9rit le coronavirus (vid\u00e9o)\u00a0\u00bb \u2014 AfrikMag\" src=\"https:\/\/afrikmag.com\/var\/www\/vhosts\/afrikmag.compublic_html\/madagascar-folle-ruee-pour-le-medicament-qui-guerit-le-coronavirus-video\/embed\/#?secret=HKFwpFfCdq#?secret=JsTGqGQZe6\" data-secret=\"JsTGqGQZe6\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La conclusion \u00e0 laquelle sont parvenus les scientifiques c&rsquo;est que les meilleures propri\u00e9t\u00e9s de barri\u00e8re \u00e9taient fournies par&nbsp;les masques artisanaux&nbsp;fabriqu\u00e9s \u00e0 partir de tissus hybrides, tels que des combinaisons de coton-chiffon, de coton-flanelle, etc. D&rsquo;apr\u00e8s les conclusions, les mat\u00e9riaux m\u00e9lang\u00e9s peuvent retenir et filtrer un grand nombre de particules.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les chercheurs ont aussi \u00e9valu\u00e9 la m\u00e9thode de filtrage \u00e9lectrostatique pour lutter contre les particules virales. Un filtre \u00e9lectrostatique peut non seulement retenir les particules a\u00e9rosolis\u00e9es mais aussi les attirer. \u00c0 cet \u00e9gard, les scientifiques ont conseill\u00e9 les masques en polyester.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Toutefois, les chercheurs ont indiqu\u00e9 que le mat\u00e9riel \u00e0 travers lequel&nbsp;le masque est fabriqu\u00e9&nbsp;n&rsquo;a aucune importance si son propri\u00e9taire l\u2019a mal mis.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u00ab <em>Les failles caus\u00e9es par un mauvais ajustement du masque sur le visage peuvent r\u00e9duire l&rsquo;efficacit\u00e9 du filtrage de plus de 60%<\/em> \u00bb, conclut l&rsquo;\u00e9tude.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Cr\u00e9dit photo: l&rsquo;usine nouvelle<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans le but de trouver le mat\u00e9riel appropri\u00e9 pour retenir les particules fines a\u00e9rosolis\u00e9es et prot\u00e9ger les personnes contre la transmission du virus, les chercheurs am\u00e9ricains ont proc\u00e9d\u00e9 par plusieurs tests de diff\u00e9rents tissus. D&rsquo;apr\u00e8s une \u00e9tude publi\u00e9e sur ACS Publications, ils sont parvenus \u00e0 la conclusion que les masques \u00e0 base de tissus hybrides &hellip;<\/p>\n","protected":false},"author":42,"featured_media":202242,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[167803],"tags":[163353,7250,14186,5554,1987],"class_list":["post-202238","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-coronavirus","tag-covid-19","tag-masque","tag-materiel","tag-meilleur","tag-scientifiques"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Covid-19: des chercheurs am\u00e9ricains r\u00e9v\u00e8lent le meilleur mat\u00e9riel pour fabriquer un masque<\/title>\n<meta name=\"description\" content=\"Dans le but de trouver le mat\u00e9riel appropri\u00e9 pour retenir les particules 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content=\"https:\/\/afrikmag.com\/var\/www\/vhosts\/afrikmag.compublic_html\/covid-19-les-scientifiques-revelent-le-meilleur-materiel-pour-fabriquer-un-masque\/\" \/>\n<meta property=\"og:site_name\" content=\"AfrikMag\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/africelebs\" \/>\n<meta property=\"article:published_time\" content=\"2020-05-04T06:48:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-05-04T06:51:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/afrikmag.com\/var\/www\/vhosts\/afrikmag.compublic_html\/wp-content\/uploads\/2020\/04\/mane-man.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Oscar Mbena\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Afrikmag\" 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