{"id":8016,"date":"2021-11-20T15:55:25","date_gmt":"2021-11-20T08:55:25","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=8016"},"modified":"2021-11-20T17:12:33","modified_gmt":"2021-11-20T10:12:33","slug":"144-dung-chat-deo-lam-bao-bi-thuc-pham-co-doc-khong","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/144-dung-chat-deo-lam-bao-bi-thuc-pham-co-doc-khong\/","title":{"rendered":"144 D\u00f9ng ch\u1ea5t d\u1ebbo l\u00e0m bao b\u00ec th\u1ef1c ph\u1ea9m c\u00f3 \u0111\u1ed9c kh\u00f4ng?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">K\u1eb9o, b\u00e1nh, m\u1ee9t, n\u01b0\u1edbc ng\u1ecdt l\u00e0 c\u00e1c lo\u1ea1i th\u1ef1c ph\u1ea9m th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ef1ng trong bao b\u00ec b\u1eb1ng ch\u1ea5t d\u1ebbo. Qua l\u1edbp m\u00e0ng m\u1ecfng trong su\u1ed1t b\u00f3ng l\u00e1ng, tr\u00f4ng th\u1ef1c ph\u1ea9m t\u01b0\u01a1i ngon, h\u1ea5p d\u1eabn, c\u00e1ch ly ho\u00e0n to\u00e0n vi khu\u1ea9n, b\u1ea3o \u0111\u1ea3m tinh khi\u1ebft. Th\u1ef1c ph\u1ea9m c\u00f2n gi\u1eef m\u1ed9t ph\u1ea7n n\u01b0\u1edbc nh\u1ea5t \u0111\u1ecbnh, kh\u00f4ng \u0111\u1ec3 b\u1ecb kh\u00f4. D\u00f9ng ch\u1ea5t d\u1ebbo l\u00e0m bao b\u00ec th\u1ef1c ph\u1ea9m c\u00f3 ch\u1ed7 t\u1ed1t l\u00e0 kh\u00f4ng d\u00e2y v\u00e0o c\u00e1c v\u1eadt xung quanh, kh\u00f4ng v\u1ee1 h\u1ecfng, mang \u0111i l\u1ea1i r\u1ea5t ti\u1ec7n l\u1ee3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ebf nh\u01b0ng c\u0169ng c\u00f3 ng\u01b0\u1eddi n\u00f3i: D\u00f9ng ch\u1ea5t d\u1ebbo l\u00e0m bao b\u00ec cho th\u1ef1c ph\u1ea9m, ti\u1ec7n l\u1ee3i th\u00ec \u0111\u00fang l\u00e0 ti\u1ec7n l\u1ee3i th\u1eadt, nh\u01b0ng ch\u1ec9 s\u1ee3 b\u1ecb nhi\u1ec5m \u0111\u1ed9c. C\u00f3 th\u1eadt nh\u01b0 v\u1eady kh\u00f4ng?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00f4ng th\u01b0\u1eddng, ch\u1ea5t d\u1ebbo d\u00f9ng l\u00e0m bao b\u00ec th\u1ef1c ph\u1ea9m kh\u00f4ng \u0111\u1ed9c, b\u1edfi v\u00ec bao b\u00ec th\u1ef1c ph\u1ea9m th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng polyetylen ho\u1eb7c nilong kh\u00f4ng \u0111\u1ed9c. Khi ch\u1ebf t\u1ea1o polyetyeln ng\u01b0\u1eddi ta kh\u00f4ng cho th\u00e2m nhi\u1ec5m c\u00e1c ch\u1ea5t kh\u00e1c. Nh\u1edd \u0111\u00f3 polyetylen nh\u1eb9, m\u1ec1m, c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u1edbi \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi, kh\u00f4ng kh\u00ed, n\u01b0\u1edbc v\u00e0 c\u00e1c ho\u00e1 ch\u1ea5t, kh\u00f4ng c\u1ea7n ch\u1ea5t \u1ed5n \u0111\u1ecbnh v\u00e0 ch\u1ea5t t\u0103ng d\u1ebbo \u0111\u1ed9c h\u1ea1i. V\u00ec v\u1eady d\u00f9ng lo\u1ea1i ch\u1ea5t d\u1ebbo polyetylen l\u00e0m bao b\u00ec th\u1ef1c ph\u1ea9m s\u1ebd an to\u00e0n, kh\u00f4ng \u0111\u1ed9c h\u1ea1i. Nh\u01b0ng polyetylen c\u0169ng c\u00f3 \u0111\u1ec3 ch\u1ea5t kh\u00ed l\u1ecdt qua ch\u00fat \u00edt, n\u1ebfu d\u00f9ng polyetylen \u0111\u1ec3 bao g\u00f3i h\u01b0\u01a1ng li\u1ec7u ho\u1eb7c ch\u1ea5t c\u00f3 m\u00f9i, m\u1ed9t ph\u1ea7n m\u00f9i h\u01b0\u01a1ng v\u00e0 m\u00f9i v\u1ecb kh\u00e1c c\u00f3 th\u1ec3 b\u1ecb bay \u0111i. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y d\u00f9ng m\u00e0ng m\u1ecfng nilong l\u00e0m bao b\u00ec s\u1ebd b\u1ec1n v\u00e0 t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f2n vi\u1ec7c d\u00f9ng c\u00e1c ch\u1ea5t d\u1ebbo kh\u00e1c l\u00e0m m\u00e0ng m\u1ecfng c\u00f3 \u0111\u1ed9c hay kh\u00f4ng th\u00ec ph\u1ea3i ph\u00e2n t\u00edch k\u1ef9 h\u01a1n, c\u1ee5 th\u1ec3 h\u01a1n. V\u00ed d\u1ee5 th\u1eed ph\u00e2n t\u00edch tr\u01b0\u1eddng h\u1ee3p polyclovinyl. Trong m\u00e0ng polyclovinyl c\u00f3 ch\u1ea5t ho\u00e1 d\u1ebbo v\u00e0 ph\u1ea7n clovinyl c\u00f2n d\u01b0, \u0111\u1ec1u l\u00e0 nh\u1eefng ch\u1ea5t \u0111\u1ed9c. Ta ph\u00e2n t\u00edch tr\u01b0\u1eddng h\u1ee3p polyphenylen. Trong nh\u1ef1a polyphenylen c\u00f3 l\u01b0\u1ee3ng ph\u00e2n t\u1eed phenylen c\u00f2n d\u01b0. Phenylen c\u00f3 th\u1ec3 ho\u00e0 tan v\u00e0o d\u1ea7u n\u00ean \u0111\u1ed9c \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi. V\u1edbi v\u1eadt li\u1ec7u l\u1ea5y an\u0111ehyt fomic l\u00e0m c\u01a1 s\u1edf \u0111\u1ec3 ch\u1ebf t\u1ea1o ch\u1ea5t d\u1ebbo th\u00ec khi ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc, v\u1edbi c\u00e1c ch\u1ea5t c\u00f3 n\u01b0\u1edbc, c\u00f3 d\u1ea7u, cho d\u00f9 \u1edf nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng, th\u00ec an\u0111ehyt fomic s\u1ebd ho\u00e0 tan v\u00e0o n\u01b0\u1edbc v\u00e0 d\u1ea7u v\u00e0 \u0111i v\u00e0o trong th\u1ef1c ph\u1ea9m, n\u00ean c\u00f3 h\u1ea1i cho s\u1ee9c kho\u1ebb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 th\u1ea5y ch\u1ec9 c\u00f3 th\u1ec3 d\u00f9ng polyetylen ho\u1eb7c nilong l\u00e0m m\u00e0ng m\u1ecfng bao g\u00f3i th\u1ef1c ph\u1ea9m l\u00e0 kh\u00f4ng \u0111\u1ed9c, c\u00f2n c\u00e1c lo\u1ea1i ch\u1ea5t d\u1ebbo kh\u00e1c \u0111\u1ec1u kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c l\u00e0m bao b\u00ec th\u1ef1c ph\u1ea9m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kho\u00e1: Polyetylen; T\u00fai ch\u1ea5t d\u1ebbo \u0111\u1ef1ng th\u1ef1c ph\u1ea9m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>K\u1eb9o, b\u00e1nh, m\u1ee9t, n\u01b0\u1edbc ng\u1ecdt l\u00e0 c\u00e1c lo\u1ea1i th\u1ef1c ph\u1ea9m th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ef1ng trong bao b\u00ec b\u1eb1ng ch\u1ea5t d\u1ebbo. Qua l\u1edbp m\u00e0ng m\u1ecfng trong su\u1ed1t b\u00f3ng l\u00e1ng, tr\u00f4ng th\u1ef1c ph\u1ea9m t\u01b0\u01a1i ngon, h\u1ea5p d\u1eabn, c\u00e1ch ly ho\u00e0n to\u00e0n vi khu\u1ea9n, b\u1ea3o \u0111\u1ea3m tinh khi\u1ebft. Th\u1ef1c ph\u1ea9m c\u00f2n gi\u1eef m\u1ed9t ph\u1ea7n n\u01b0\u1edbc nh\u1ea5t \u0111\u1ecbnh, kh\u00f4ng \u0111\u1ec3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[8,15],"tags":[],"class_list":["post-8016","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=8016"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8016\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}