{"id":885,"date":"2024-02-04T13:27:54","date_gmt":"2024-02-04T05:27:54","guid":{"rendered":"https:\/\/www.joyforce.com\/?p=885"},"modified":"2024-02-05T13:38:57","modified_gmt":"2024-02-05T05:38:57","slug":"production-method-of-hpmc","status":"publish","type":"post","link":"https:\/\/www.joyforce.com\/pt\/blogs\/production-method-of-hpmc.html","title":{"rendered":"M\u00e9todo de produ\u00e7\u00e3o de HPMC"},"content":{"rendered":"

Trate a celulose de algod\u00e3o refinada com solu\u00e7\u00e3o alcalina a 35-40\u00b0C por meia hora, pressione, pulverize a celulose e envelhe\u00e7a adequadamente a 35\u00b0C, de modo que o grau m\u00e9dio de polimeriza\u00e7\u00e3o da fibra alcalina obtida esteja dentro da faixa exigida. Coloque a fibra alcalina na chaleira de eterifica\u00e7\u00e3o, adicione \u00f3xido de propileno e cloreto de metila e eterifique a 50-80\u00b0C por 5 horas, a press\u00e3o m\u00e1xima \u00e9 de cerca de 1,8 MPa. Em seguida, adicione uma quantidade adequada de \u00e1cido clor\u00eddrico e \u00e1cido ox\u00e1lico \u00e0 \u00e1gua quente a 90 \u00b0C para lavar o material e expandir o volume. Desidrate com uma centr\u00edfuga, lave at\u00e9 ficar neutro, quando o teor de \u00e1gua no material for inferior a 60%, seque-o com um fluxo de ar quente a 130\u00b0C at\u00e9 que o teor seja inferior a 5% e, por fim, pulverize e passe por uma peneira de 20 malhas para obter o produto acabado.<\/p>\n

\"\"<\/p>","protected":false},"excerpt":{"rendered":"

Trate a celulose de algod\u00e3o refinada com solu\u00e7\u00e3o alcalina a 35-40\u00b0C por meia hora, pressione, pulverize a celulose e envelhe\u00e7a adequadamente a 35\u00b0C, de modo que o grau m\u00e9dio de polimeriza\u00e7\u00e3o da fibra alcalina obtida esteja dentro da faixa exigida. Coloque a fibra alcalina na chaleira de eterifica\u00e7\u00e3o, adicione \u00f3xido de propileno e cloreto de metila em [...]<\/p>","protected":false},"author":1,"featured_media":877,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-885","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"acf":[],"yoast_head":"\nProduction method of HPMC - JOYFORCE INDUSTRIAL<\/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:\/\/www.joyforce.com\/pt\/blogs\/production-method-of-hpmc.html\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Production method of HPMC - JOYFORCE INDUSTRIAL\" \/>\n<meta property=\"og:description\" content=\"Treat the refined cotton cellulose with alkali solution at 35-40\u00b0C for half an hour, press, pulverize the cellulose, and properly age at 35\u00b0C, so that the average degree of polymerization of the obtained alkali fiber is within the required range. 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