Methyl cellulose (MC) yopangidwa ndi zinthu zachilengedwe

Methyl cellulose (MC) ndi chochokera ku cellulose, yomwe ndi polima yachilengedwe yomwe imapezeka m'makoma a cellulose. Ma cellulose ndi amodzi mwazinthu zomwe zimapezeka kwambiri padziko lapansi, zomwe zimapangidwa kuchokera kumitengo yamitengo ndi ulusi wa thonje. MC imapangidwa kuchokera ku cellulose kudzera pamachitidwe angapo amankhwala omwe amaphatikizapo kulowetsa magulu a hydroxyl (-OH) mu molekyulu ya cellulose ndi magulu a methyl (-CH3).

Ngakhale MC yokha ndi mankhwala osinthidwa ndi mankhwala, zopangira zake, cellulose, zimachokera kuzinthu zachilengedwe. Ma cellulose amatha kupangidwa kuchokera kuzinthu zosiyanasiyana zamaluwa, kuphatikiza matabwa, thonje, hemp, ndi zomera zina za ulusi. Ma cellulose amapangidwa kuti achotse zonyansa ndikuzisintha kukhala mawonekedwe ogwiritsidwa ntchito popanga MC.

Ma cellulose akapezeka, amakumana ndi etherification kuti ayambitse magulu a methyl pamsana wa cellulose, zomwe zimapangitsa kupanga methyl cellulose. Izi zimaphatikizapo kuchiza cellulose ndi kusakaniza kwa sodium hydroxide ndi methyl chloride pansi pamikhalidwe yoyendetsedwa.

Chotsatira chake cha methyl cellulose ndi ufa woyera mpaka kuyera, wopanda fungo, komanso wopanda kukoma womwe umasungunuka m'madzi ozizira ndikupanga yankho la viscous. Amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikizapo chakudya, mankhwala, chisamaliro chaumwini, ndi zomangamanga, chifukwa cha kukhuthala, kukhazikika, ndi kupanga mafilimu.

Ngakhale kuti MC ndi chinthu chosinthidwa ndi mankhwala, chimachokera ku cellulose yachilengedwe, ndikupangitsa kuti ikhale yosawonongeka komanso yosawononga chilengedwe pazinthu zambiri.