Cellulose ether wani nau'in polymer ne da aka yi daga cellulose na halitta ta hanyar gyaran sinadarai. Cellulose ether wani nau'in cellulose ne da aka samo daga cellulose na halitta. Samar da cellulose ether ya bambanta da polymers na roba. Mafi mahimmancin kayansa shine cellulose, wani mahaɗin polymer na halitta. Saboda takamaiman tsarin cellulose na halitta, cellulose kanta ba ta da ikon yin aiki tare da wakilan etherification. Duk da haka, bayan maganin maganin kumburi, haɗin hydrogen mai ƙarfi tsakanin sarƙoƙin kwayoyin halitta da sarƙoƙi suna lalacewa, kuma sakin ƙungiyar hydroxyl mai aiki ya zama cellulose mai amsawa. Sami cellulose ether.
Halayen ethers na cellulose sun dogara ne akan nau'in, adadi da rarrabawar abubuwan maye. Rarraba ethers na cellulose kuma ya dogara ne akan nau'in abubuwan maye, matakin etherification, narkewa da halayen aikace-aikacen da suka shafi hakan. Dangane da nau'in abubuwan maye akan sarkar kwayoyin halitta, ana iya raba shi zuwa monoether da gauraye ether. Yawancin lokaci muna amfani da mc azaman monoether, da HPmc azaman gauraye ether. Methyl cellulose ether mc shine samfurin bayan an maye gurbin rukunin hydroxyl akan sashin glucose na cellulose na halitta da rukunin methoxy. Samfuri ne da aka samu ta hanyar maye gurbin wani ɓangare na rukunin hydroxyl akan naúrar tare da rukunin methoxy da wani ɓangare tare da rukunin hydroxypropyl. Tsarin tsarin shine [C6H7O2(OH)3-mn(OCH3)m[OCH2CH(OH)CH3]n]x Hydroxyethyl methyl cellulose ether HEmc, waɗannan sune manyan nau'ikan da ake amfani da su sosai kuma ana siyarwa a kasuwa.
Dangane da narkewar sinadaran, ana iya raba shi zuwa ionic da non-ionic. Ethers cellulose marasa ionic masu narkewa cikin ruwa galibi sun ƙunshi jerin alkyl ethers guda biyu da hydroxyalkyl ethers. Ana amfani da Ionic Cmc galibi a cikin sabulun sabulu na roba, buga yadi da rini, binciken abinci da mai. Ana amfani da Non-ionic mc, HPmc, HEmc, da sauransu galibi a cikin kayan gini, shafa latex, magani, sinadarai na yau da kullun, da sauransu. Ana amfani da su azaman mai kauri, wakilin riƙe ruwa, mai daidaita, mai wargazawa da wakilin samar da fim.
Lokacin Saƙo: Nuwamba-24-2022