Cellulose Ether

Cellulose etherAna yin sa ne daga cellulose ta hanyar amsawar etherification na ɗaya ko fiye daga cikin wakilan etherification da kuma niƙa busasshen nama. Dangane da tsarin sinadarai daban-daban na abubuwan maye gurbin ether, ana iya raba ethers na cellulose zuwa anionic, cationic da nonionic ethers. Ionic cellulose ethers galibi sun haɗa daCarboxymethyl cellulose ether (CMC); ƙwayoyin cellulose marasa ionic galibi sun haɗa damethyl cellulose ether (MC),hydroxypropyl methyl cellulose ether (HPMC)da kuma hydroxyethyl cellulose ether.Chlorine ether (HC)da sauransu. Ana raba ethers marasa ionic zuwa ethers masu narkewa cikin ruwa da ethers masu narkewa cikin mai, kuma ethers marasa narkewa cikin ruwa ana amfani da su galibi a cikin kayayyakin turmi. A gaban ions na calcium, ether na ionic cellulose ba shi da ƙarfi, don haka ba kasafai ake amfani da shi ba a cikin kayayyakin turmi masu gauraye waɗanda ke amfani da siminti, lemun tsami mai laushi, da sauransu a matsayin kayan siminti. Ana amfani da ethers na cellulose marasa narkewa cikin ruwa sosai a masana'antar kayan gini saboda kwanciyar hankali da riƙe ruwa.

Halayen Sinadaran Cellulose Ether

Kowace cellulose ether tana da tsarin cellulose na asali — tsarin Anhydroglucose. A yayin samar da cellulose ether, ana fara dumama zaren cellulose a cikin ruwan alkaline, sannan a yi masa magani da wani sinadarin etherifying. Ana tsarkake samfurin amsawar fibrous kuma a niƙa shi don samar da foda iri ɗaya tare da ɗan laushi.

A cikin tsarin samar da MC, ana amfani da methyl chloride kawai a matsayin wakilin etherification; ban da methyl chloride, ana amfani da propylene oxide don samun ƙungiyoyin maye gurbin hydroxypropyl a cikin samar da HPMC. Kwayoyin cellulose daban-daban suna da bambancin rabon maye gurbin methyl da hydroxypropyl, wanda ke shafar daidaiton kwayoyin halitta da zafin zafin gelation na mafita na cellulose ether.