{"id":327,"date":"2018-11-08T00:35:39","date_gmt":"2018-11-07T21:35:39","guid":{"rendered":"http:\/\/eren-pet.com.tr\/web\/?p=327"},"modified":"2019-02-19T23:23:57","modified_gmt":"2019-02-19T20:23:57","slug":"plastik-sise-pet-sise-icadi","status":"publish","type":"post","link":"https:\/\/eren-pet.com.tr\/web\/index.php\/2018\/11\/08\/plastik-sise-pet-sise-icadi\/","title":{"rendered":"Plastik \u015ei\u015fe (PET \u015ei\u015fe) \u0130cad\u0131"},"content":{"rendered":"<blockquote><p>Wyeth, gazl\u0131 i\u00e7ecekleri depolamak i\u00e7in kullan\u0131labilecek yeni bir plastik icat etti.<\/p><\/blockquote>\n<p>S\u0131radan plastik \u015fi\u015feler, g\u00fcn\u00fcm\u00fczde hane halk\u0131n\u0131n geri d\u00f6n\u00fc\u015f\u00fcm i\u00e7in en \u00e7ok kulland\u0131\u011f\u0131 malzemeler aras\u0131nda yer al\u0131yor. Plastik \u015fi\u015felerin (<strong>pet \u015fi\u015fe<\/strong>\u00a0olarak da bilinir), cam \u015fi\u015felere oranla bu kadar pop\u00fcler olmas\u0131n\u0131n yegane sebeplerinden birisi, cam \u015fi\u015felere oranla daha ucuz ve dayan\u0131kl\u0131 olmas\u0131d\u0131r. Birle\u015fik Devletler&#8217;den br m\u00fchendis olan\u00a0<strong>Nathaniel Wyeth (1911-1990)<\/strong>, plastik \u015fi\u015fe \u00fczerinde neredeyse on y\u0131l kadar \u00e7al\u0131\u015ft\u0131. Bir i\u015f arkada\u015f\u0131na plasti\u011fin, Coca-Cola gibi gazl\u0131 i\u00e7ecekleri depolamada kullan\u0131l\u0131p kullan\u0131lamayaca\u011f\u0131n\u0131 sordu\u011funda, arkada\u015f\u0131 ona \u015fi\u015fenin patlayabilece\u011fini s\u00f6yledi. Wyeth&#8217;in yapt\u0131\u011f\u0131 ilk deneyler, gazl\u0131 i\u00e7eceklerin pet \u015fi\u015feler \u00fczerinde esnemeye yol a\u00e7t\u0131\u011f\u0131n\u0131 g\u00f6sterdi. Elbette o d\u00f6nemde kullan\u0131lan plastik yeteri kadar sert de\u011fildi, ancak plasti\u011fi olu\u015fturan molek\u00fcl dizileri birbirleri ile s\u0131k\u0131 s\u0131k\u0131ya \u00f6r\u00fcl\u00fcrse plastik daha da g\u00fc\u00e7lendirilebilirdi. Wyeth,\u00a0naylonun molek\u00fcllerinin esnetilip yeniden hizaland\u0131r\u0131lmas\u0131 durumunda daha sert bir hal ald\u0131\u011f\u0131n\u0131 biliyordu ve bu bilgi \u0131\u015f\u0131\u011f\u0131nda, plasti\u011fi naylon ile kar\u0131\u015ft\u0131rarak, \u015fekli \u00f6nceden belirlenmi\u015f bir kal\u0131p icat etti.<\/p>\n<p>Eriyik plastik, \u015fi\u015fe \u015feklindeki bir kal\u0131ba d\u00f6k\u00fcl\u00fcp i\u00e7erisine hava bas\u0131ld\u0131\u011f\u0131nda plastik kal\u0131b\u0131n \u015feklini al\u0131yordu ancak ilk denemeler ba\u015far\u0131s\u0131zd\u0131. Wyeth&#8217;in, &#8220;patlayan \u015fi\u015fe problemi&#8221; ad\u0131n\u0131 verdi\u011fi bu problemi \u00e7\u00f6zmek i\u00e7in 10.000&#8217;in \u00fczerinde deneme yapt\u0131\u011f\u0131 bilinmektedir. Denemeleri sonucunda Wyeth, o g\u00fcne kadar kulland\u0131\u011f\u0131 naylon ve polipropilen kar\u0131\u015f\u0131m\u0131n\u0131 kullanmaktan vaz ge\u00e7ti ve onun yerine polipropilen-terfatlat (PET) kar\u0131\u015f\u0131m\u0131n\u0131 kullanmaya\u00a0<strong>1973 y\u0131l\u0131nda<\/strong>\u00a0karar verdi. PET, olduk\u00e7a esnek ve bir o kadar da dayan\u0131kl\u0131yd\u0131. T\u00fcm\u00fcyle \u015feffaf yap\u0131s\u0131, i\u00e7erisindeki i\u00e7ece\u011fin d\u0131\u015far\u0131dan g\u00f6r\u00fcnmesini m\u00fcmk\u00fcn k\u0131l\u0131yordu ve \u00fcstelik, ortaya \u00e7\u0131kan \u00fcr\u00fcn t\u00fcm\u00fcyle geri d\u00f6n\u00fc\u015ft\u00fcr\u00fclebilirdi.<\/p>\n<p>O d\u00f6nemde h\u0131zla y\u00fckselen gazl\u0131 i\u00e7ecek end\u00fcstrisi, Wyeth&#8217;in pet \u015fi\u015felerini \u00e7ok k\u0131sa s\u00fcrede benimsedi. O kadar ki 1973 y\u0131l\u0131nda \u00fcretilen pet \u015fi\u015felerin \u00fcretiminden ge\u00e7en 25 y\u0131l i\u00e7erisinde, y\u0131lda on milyar adet pet \u015fi\u015fenin \u00fcretilmeye ba\u015fland\u0131.<\/p>\n<p>Birle\u015fik Devletler&#8217;de \u00fcretilen polyester hal\u0131lar\u0131n neredeyse yar\u0131s\u0131n\u0131n, geri d\u00f6n\u00fc\u015ft\u00fcr\u00fclm\u00fc\u015f pet \u015fi\u015felerden yap\u0131ld\u0131\u011f\u0131n\u0131 biliyor muydunuz?<\/p>\n<p>Kaynak:\u00a0http:\/\/www.kimnezamanicatetti.com\/plastik-sise-pet-sise\/<\/p>\n","protected":false},"excerpt":{"rendered":"<p>S\u0131radan plastik \u015fi\u015feler, g\u00fcn\u00fcm\u00fczde hane halk\u0131n\u0131n geri d\u00f6n\u00fc\u015f\u00fcm i\u00e7in en \u00e7ok kulland\u0131\u011f\u0131 malzemeler aras\u0131nda yer al\u0131yor.<\/p>\n","protected":false},"author":1,"featured_media":328,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":[],"categories":[30],"tags":[],"_links":{"self":[{"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/posts\/327"}],"collection":[{"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/comments?post=327"}],"version-history":[{"count":2,"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/posts\/327\/revisions"}],"predecessor-version":[{"id":526,"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/posts\/327\/revisions\/526"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/media\/328"}],"wp:attachment":[{"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/media?parent=327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/categories?post=327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eren-pet.com.tr\/web\/index.php\/wp-json\/wp\/v2\/tags?post=327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}