Focus on Cellulose ethers

Menene ethylcellulose da aka yi daga?

Menene ethylcellulose da aka yi daga?

Ethyl cellulose wani polymer roba ne wanda aka samo daga cellulose na halitta, wani tsari na gama gari na ganuwar tantanin halitta. Samar da ethyl cellulose ya haɗa da gyare-gyaren sinadarai na cellulose na halitta ta amfani da ethyl chloride da mai kara kuzari don samar da ethyl ether wanda aka samu na cellulose.

Tsarin yana farawa da tsarkakewar cellulose daga tushen shuka, irin su ɓangaren litattafan almara ko auduga. Sai a narkar da tsaftataccen cellulose a cikin cakuɗaɗɗen kaushi, kamar ethanol da ruwa, don samar da mafita mai ɗanɗano. Ana ƙara Ethyl chloride a cikin maganin, tare da mai kara kuzari, wanda ke sauƙaƙe amsawa tsakanin cellulose da ethyl chloride.

A lokacin daukar ciki, kwayoyin ethyl chloride ya maye gurbin wasu rukunin hydroxyl akan sarkar cellulose, wanda ya haifar da samuwar ethyl cellulose. Matsayin ethoxylation, ko adadin ƙungiyoyin ethyl da ke haɗe zuwa kowane rukunin glucose a cikin sarkar cellulose, ana iya sarrafa shi yayin amsawar don samar da ethyl cellulose tare da kaddarorin daban-daban da halayen solubility.

Bayan an gama amsawa, za'a wanke ethyl cellulose da aka samu kuma a bushe don cire duk wani abu da ya rage ko datti. Samfurin ƙarshe shine fari ko launin rawaya foda wanda ke narkewa a cikin nau'ikan kaushi mai yawa, amma maras narkewa cikin ruwa.

Gabaɗaya, ethyl cellulose shine polymer roba wanda aka samo daga cellulose na halitta ta hanyar tsarin gyare-gyaren sinadarai wanda ya haɗa da ƙara ƙungiyoyin ethyl zuwa sarkar cellulose.


Lokacin aikawa: Maris 19-2023
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