Cellulose ether

Cellulose etherAn yi daga cellulose ta hanyar etherification dauki daya ko da yawa etherification jamiái da bushe nika. Dangane da tsarin sinadarai daban-daban na masu maye gurbin ether, ana iya raba ethers cellulose zuwa anionic, cationic da nonionic ethers. Ionic cellulose ethers galibi sun haɗa dacarboxymethyl cellulose ether (CMC); wadanda ba ionic cellulose ethers yafi hada damethyl cellulose ether (MC),hydroxypropyl methyl cellulose ether (HPMC)da kuma hydroxyethyl cellulose ether.Chlorine ether (HC)da sauransu. An raba ethers marasa ionic zuwa ethers masu narkewa da ruwa da ethers masu narkewar mai, kuma ethers masu narkewar ruwa ba na ionic galibi ana amfani da su a samfuran turmi. A gaban ions calcium, ionic cellulose ether ba shi da kwanciyar hankali, don haka da wuya a yi amfani da shi a cikin busassun busassun kayan turmi masu amfani da siminti, lemun tsami, da dai sauransu a matsayin kayan siminti. Nonionic ruwa-soluble cellulose ethers ana amfani da ko'ina a cikin ginin kayan masana'antu saboda su dakatar da kwanciyar hankali da kuma ruwa riƙe.

Abubuwan Sinadarai na Cellulose Ether

Kowane ether cellulose yana da ainihin tsarin cellulose - tsarin Anhydroglucose. A cikin aiwatar da samar da ether cellulose, za a fara mai da fiber cellulose a cikin wani bayani na alkaline, sa'an nan kuma a bi da shi tare da wani etherifying wakili. Samfurin dauki na fibrous yana tsarkakewa kuma an niƙasa don samar da foda iri ɗaya tare da ɗanɗano.

A cikin tsarin samar da MC, kawai methyl chloride ana amfani dashi azaman wakili na etherification; baya ga methyl chloride, ana kuma amfani da propylene oxide don samun ƙungiyoyin maye gurbin hydroxypropyl a cikin samar da HPMC. Daban-daban ethers cellulose suna da daban-daban methyl da hydroxypropyl maye rabo, wanda rinjayar da kwayoyin jituwa da thermal gelation zafin jiki na cellulose ether mafita.