{"id":14403,"date":"2026-04-04T09:33:51","date_gmt":"2026-04-04T09:33:51","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=14403"},"modified":"2026-04-04T09:33:51","modified_gmt":"2026-04-04T09:33:51","slug":"polyethylene-clothing-for-a-warming-world","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/materials-science\/polyethylene-clothing-for-a-warming-world\/","title":{"rendered":"Polyethylenov\u00fd textil: jak z\u016fstat v chladu p\u0159i +40 \u00b0C bez klimatizace"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Plast: Tajemstv\u00ed udr\u017een\u00ed chladu v otepluj\u00edc\u00edm se sv\u011bt\u011b<\/h2>\n\n<h2 class=\"wp-block-heading\">\u00davod<\/h2>\n\n<p>Jak planeta nad\u00e1le h\u0159eje, hled\u00e1n\u00ed zp\u016fsob\u016f, jak z\u016fstat v chladu a pohodl\u00ed, se st\u00e1v\u00e1 st\u00e1le d\u016fle\u017eit\u011bj\u0161\u00edm. Jedno slibn\u00e9 \u0159e\u0161en\u00ed p\u0159edstavuje pou\u017eit\u00ed polyethylenu, b\u011b\u017en\u00e9ho plastov\u00e9ho materi\u00e1lu, v od\u011bvech.<\/p>\n\n<h2 class=\"wp-block-heading\">Chladic\u00ed vlastnosti polyethylenu<\/h2>\n\n<p>Polyethylen je jedine\u010dn\u00fd ve sv\u00e9 schopnosti propou\u0161t\u011bt infra\u010derven\u00e9 z\u00e1\u0159en\u00ed. Infra\u010derven\u00e9 z\u00e1\u0159en\u00ed je typ sv\u011btla, kter\u00e9 na\u0161e t\u011blo vyza\u0159uje p\u0159i uvol\u0148ov\u00e1n\u00ed tepla. Kdy\u017e je infra\u010derven\u00e9 z\u00e1\u0159en\u00ed od\u011bvem zachyceno, m\u016f\u017ee n\u00e1s zah\u0159\u00e1t. Polyethylen v\u0161ak toto z\u00e1\u0159en\u00ed propou\u0161t\u00ed, \u010d\u00edm\u017e pom\u00e1h\u00e1 udr\u017eet n\u00e1s v chladu.<\/p>\n\n<h2 class=\"wp-block-heading\">Studie Stanfordovy univerzity<\/h2>\n\n<p>V\u011bdci ze Stanfordovy univerzity provedli studii o chladic\u00edch \u00fa\u010dinc\u00edch polyethylenu v od\u011bvech. Zjistili, \u017ee lid\u00e9 nos\u00edc\u00ed materi\u00e1l obsahuj\u00edc\u00ed polyethylen se c\u00edtili v\u00fdrazn\u011b chladn\u011bji ne\u017e ti, kte\u0159\u00ed m\u011bli na sob\u011b bavln\u011bn\u00e9 oble\u010den\u00ed. D\u016fvodem je, \u017ee polyethylen umo\u017enil snaz\u0161\u00ed \u00fanik t\u011blesn\u00e9ho tepla.<\/p>\n\n<h2 class=\"wp-block-heading\">\u0158e\u0161en\u00ed v\u00fdzev<\/h2>\n\n<p>A\u010dkoli m\u00e1 polyethylen slibn\u00e9 chladic\u00ed vlastnosti, existuj\u00ed ur\u010dit\u00e9 v\u00fdzvy p\u0159i jeho pou\u017eit\u00ed v od\u011bvech. Jednou z nich je jeho pr\u016fhlednost, kter\u00e1 z n\u011bj \u010din\u00ed nevhodn\u00fd materi\u00e1l na oble\u010den\u00ed. V\u00fdzkumn\u00edci ze Stanfordu v\u0161ak tuto probl\u00e9m vy\u0159e\u0161ili pou\u017eit\u00edm varianty polyethylenu, kter\u00e1 je nepr\u016fhledn\u00e1 pro b\u011b\u017en\u00e9 sv\u011btlo, ale ne pro infra\u010derven\u00e9 z\u00e1\u0159en\u00ed.<\/p>\n\n<p>Dal\u0161\u00ed v\u00fdzvou je, \u017ee polyethylen neabsorbuje vlhkost, co\u017e by mohlo v\u00e9st k probl\u00e9m\u016fm s pocen\u00edm. V\u011bdci tento probl\u00e9m vy\u0159e\u0161ili chemickou \u00fapravou materi\u00e1lu, aby byl hydrofiln\u00ed, tedy l\u00e9pe absorbuj\u00edc\u00ed vodu.<\/p>\n\n<h2 class=\"wp-block-heading\">V\u00fdzkum MIT<\/h2>\n\n<p>V\u011bdci z MIT rovn\u011b\u017e zkoumaj\u00ed potenci\u00e1l polyethylenu pro chladic\u00ed od\u011bvy. P\u0159istupuj\u00ed k tomu jinak a zam\u011b\u0159uj\u00ed se na vytv\u00e1\u0159en\u00ed polyethylenov\u00fdch vl\u00e1ken dostate\u010dn\u011b tenk\u00fdch, aby propou\u0161t\u011bla infra\u010derven\u00e9 z\u00e1\u0159en\u00ed. Tato metoda by mohla v\u00e9st k pohodln\u011bj\u0161\u00edmu a odoln\u011bj\u0161\u00edmu textilu.<\/p>\n\n<h2 class=\"wp-block-heading\">P\u0159\u00ednosy polyethylenov\u00e9ho oble\u010den\u00ed<\/h2>\n\n<p>Oble\u010den\u00ed vyroben\u00e9 z polyethylenu by mohlo m\u00edt n\u011bkolik p\u0159\u00ednos\u016f:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Sn\u00ed\u017een\u00e9 pou\u017e\u00edv\u00e1n\u00ed klimatizac\u00ed a \u00faspora energie<\/li>\n<li>Zv\u00fd\u0161en\u00e9 pohodl\u00ed v hork\u00e9m po\u010das\u00ed<\/li>\n<li>Potenci\u00e1l pro nov\u00e9 a inovativn\u00ed n\u00e1vrhy od\u011bv\u016f<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">V\u00fdzvy a p\u0159\u00edle\u017eitosti<\/h2>\n\n<p>Navzdory potenci\u00e1ln\u00edm p\u0159\u00ednos\u016fm st\u00e1le existuj\u00ed v\u00fdzvy, kter\u00e9 je t\u0159eba p\u0159ekonat p\u0159i v\u00fdvoji polyethylenov\u00e9ho oble\u010den\u00ed. Mezi tyto v\u00fdzvy pat\u0159\u00ed:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Zaji\u0161t\u011bn\u00ed pohodl\u00ed p\u0159i no\u0161en\u00ed materi\u00e1lu<\/li>\n<li>Zlep\u0161en\u00ed pevnosti a odolnosti textilie<\/li>\n<li>Zv\u011bt\u0161en\u00ed v\u00fdroby, aby byl materi\u00e1l \u0161iroce dostupn\u00fd<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011br<\/h2>\n\n<p>V\u00fdvoj polyethylenov\u00e9ho oble\u010den\u00ed je vzru\u0161uj\u00edc\u00ed vyhl\u00eddkou pro otepluj\u00edc\u00ed se sv\u011bt. Vyu\u017eit\u00edm jedine\u010dn\u00fdch vlastnost\u00ed polyethylenu v\u00fdzkumn\u00edci pracuj\u00ed na vytvo\u0159en\u00ed od\u011bv\u016f, kter\u00e9 pomohou lidem z\u016fstat v chladu a pohodl\u00ed i v nejteplej\u0161\u00edch dnech. A\u010dkoli st\u00e1le existuj\u00ed v\u00fdzvy k p\u0159ekon\u00e1n\u00ed, potenci\u00e1ln\u00ed p\u0159\u00ednosy polyethylenov\u00e9ho oble\u010den\u00ed z n\u011bj \u010din\u00ed slibnou oblast v\u00fdzkumu.<\/p>","protected":false},"excerpt":{"rendered":"<p>Plast: Tajemstv\u00ed udr\u017een\u00ed chladu v otepluj\u00edc\u00edm se sv\u011bt\u011b \u00davod Jak planeta nad\u00e1le h\u0159eje, hled\u00e1n\u00ed zp\u016fsob\u016f, jak z\u016fstat v chladu a pohodl\u00ed, se st\u00e1v\u00e1 st\u00e1le d\u016fle\u017eit\u011bj\u0161\u00edm. Jedno slibn\u00e9 \u0159e\u0161en\u00ed p\u0159edstavuje pou\u017eit\u00ed&hellip;<\/p>\n","protected":false},"author":2,"featured_media":25377,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3681],"tags":[8950,19346,37,6140,19345,120],"class_list":["post-14403","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-science","tag-cooling","tag-infrared-radiation","tag-innovation","tag-clothing","tag-polyethylene","tag-sustainability"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/14403","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=14403"}],"version-history":[{"count":2,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/14403\/revisions"}],"predecessor-version":[{"id":25378,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/14403\/revisions\/25378"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media\/25377"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=14403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=14403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=14403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}