Cellulose ether polymer roba ce da aka yi daga cellulose na halitta ta hanyar gyara sinadarai.Cellulose ether wani abu ne na cellulose na halitta.Samar da ether cellulose ya bambanta da polymers na roba.Mafi mahimmancin kayan sa shine cellulose, fili na polymer na halitta.Saboda ƙayyadaddun tsarin tsarin cellulose na halitta, cellulose kanta ba ta da ikon amsawa tare da ma'aikatan etherification.Duk da haka, bayan maganin kumburin wakili, haɗin gwiwar hydrogen mai karfi tsakanin sassan kwayoyin halitta da sarƙoƙi ya lalace, kuma sakin aiki na ƙungiyar hydroxyl ya zama alkali cellulose mai amsawa.Samun cellulose ether.
Abubuwan da ke cikin ethers cellulose sun dogara da nau'in, lamba da rarraba abubuwan maye.Rarraba ethers cellulose kuma yana dogara ne akan nau'in maye gurbin, digiri na etherification, solubility da abubuwan aikace-aikacen da suka danganci.Dangane da nau'in maye gurbin akan sarkar kwayoyin halitta, ana iya raba shi zuwa monoether da ether mai gauraye.Mu yawanci amfani da mc a matsayin monoether, da HPmc a matsayin gauraye ether.Methyl cellulose ether mc shine samfurin bayan ƙungiyar hydroxyl akan rukunin glucose na cellulose na halitta ya maye gurbin ƙungiyar methoxy.Samfuri ne da aka samu ta musanya wani ɓangare na ƙungiyar hydroxyl akan naúrar tare da ƙungiyar methoxy da wani ɓangaren tare da ƙungiyar hydroxypropyl.Tsarin tsari 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 kuma ana siyarwa a kasuwa.
Dangane da solubility, ana iya raba shi zuwa ionic da wadanda ba ionic ba.Ethers cellulose masu narkewa da ruwa ba na ionic ba sun ƙunshi jerin abubuwa biyu na alkyl ethers da ethers hydroxyalkyl.Ana amfani da Ionic Cmc galibi a cikin kayan wanka na roba, bugu da rini, abinci da binciken mai.Non-ionic mc, HPmc, HEmc, da dai sauransu ana amfani da su musamman a cikin kayan gini, latex coatings, magani, yau da kullum sunadarai, da dai sauransu. Ana amfani da matsayin thickener, ruwa retaining wakili, stabilizer, dispersant da fim forming wakili.
Lokacin aikawa: Nuwamba-24-2022