Cellulose etherndi mawu ophatikizana amitundu yosiyanasiyana yochokera ku cellulose yachilengedwe (thonje woyengedwa ndi zamkati zamatabwa, ndi zina zotero) kudzera mu etherification. Ndi mankhwala opangidwa ndi kulowetsedwa pang'ono kapena kwathunthu kwa magulu a hydroxyl mu cellulose macromolecules ndi magulu a ether, ndipo ndi chochokera kumunsi kwa cellulose. Pambuyo pa etherification, mapadi amatha kusungunuka m'madzi, kusungunula madzi amchere, ndi zosungunulira za organic, ndipo zimakhala ndi thermoplastic properties. Pali mitundu yambiri ya ma cellulose ethers, omwe amagwiritsidwa ntchito kwambiri m'mafakitale monga zomangamanga, simenti, zokutira, mankhwala, chakudya, mafuta, mankhwala a tsiku ndi tsiku, nsalu, kupanga mapepala, ndi zipangizo zamagetsi. Malinga ndi kuchuluka kwa zolowa m'malo, zitha kugawidwa m'ma ethers amodzi ndi ma ether osakanikirana, ndipo malinga ndi ionization, zitha kugawidwa mu ionic cellulose ethers ndi non ionic cellulose ethers. Pakalipano, kupanga ma ionic cellulose ether ionic mankhwala ndi okhwima, osavuta kupanga, ndipo mtengo wake ndi wochepa. Chotchinga chamakampani ndi chochepa kwambiri, ndipo chimagwiritsidwa ntchito makamaka pazinthu zowonjezera zakudya, zowonjezera zovala, makampani opanga mankhwala tsiku ndi tsiku, etc. Ndiwo chinthu chachikulu chomwe chimapangidwa pamsika.
Pakali pano, mainstreamma cellulose etherspadziko lapansi ndi CMC, HPMC, MC, HEC, ndi zina zotero. Pakati pawo, CMC ili ndi kupanga kwakukulu, kuwerengera pafupifupi theka la kupanga padziko lonse lapansi, pamene HPMC ndi MC zimawerengera pafupifupi 33% ya zofuna zapadziko lonse, ndipo HEC imawerengera. pafupifupi 13% ya msika wapadziko lonse lapansi. Kugwiritsa ntchito kofunikira kwambiri kwa Carboxymethyl cellulose (CMC) ndi zotsukira, zomwe zimawerengera 22% ya zomwe msika ukufunikira. Zogulitsa zina zimagwiritsidwa ntchito kwambiri pomanga, chakudya ndi mankhwala.
Nthawi yotumiza: Jul-13-2023