Yiziphi izinhlobo ezijwayelekile ze-cellulose ether? Yiziphi izici?

I-Cellulose TETERS iyiqembu elihlukahlukene lama-polymers asuselwa ku-cellulose, i-polysaccharide etholakala ezitshalweni. Zisetshenziswa kabanzi kwizimboni ezahlukahlukene, kufaka phakathi ukwakhiwa, amakhamishini, ukudla, nokunakekelwa komuntu siqu, ngenxa yezakhiwo zazo ezihlukile nokusebenza okuhlukahlukene. Nazi ezinye izinhlobo ezijwayelekile ze-cellulose ether nezimpawu zazo:

1. Methyl cellulose (MC):
   • Izici:
     • I-Methyl celtuleose iyi-polymer esolulekayo enamanzi etholakala ku-cellulose ngokuyiphatha nge-methyl chloride.
     • Ngokuvamile kungenamphumulo, akunambitha, futhi angenzi ubuthi, okwenza kulungele ukusetshenziswa ezinhlelweni eziningi zezicelo.
     • I-MC ibonisa izakhiwo ezinhle kakhulu zokugcina amanzi, okwenza kube yisengezo esifanelekile sodaka osuselwa kuso usimende, ama-pypsum asuselwa ku-gypSum, kanye nama-tile anamathela.
     • Kuthuthukisa ukusebenziseka, ukunamathela, kanye nesikhathi esivulekile ezintweni zokwakha, okuvumela uhlelo lokusebenza olulula nokusebenza okungcono.
     • I-methyl cellulose ivame ukusetshenziswa njenge-ejenti yokuqina, i-stabilizer, kanye ne-emulsifier emikhiqizweni yokudla, amakhamishini kanye nezimonyo.
2. I-Hydroxyyethyl cellulose (HEC):
   • Izici:
     • I-Hydroxyyethyl cellulose ikhiqizwa ngokuphendula i-cellulose nge-ethylene oxide ukwethula amaqembu we-hydroxyethyl e-cellulose backbone.
     • Kuyancibilika emanzini abandayo kanye nokwenza amafomu acacile, ama-viscous solutions anezakhiwo ezinhle kakhulu zokugcina amanzi.
     • I-HEC isetshenziswa kakhulu njengomuntu omkhulu, i-Rheology modifier, kanye ne-ejenti eyakha amafilimu kuzinhlelo zokusebenza ezahlukahlukene, kufaka phakathi upende, anamathela, imikhiqizo yokunakekelwa komuntu, nemikhiqizo yezemithi.
     • Kwezinto zokwakha, i-HEC ithuthukisa ukusebenzela, ukumelana kwe-SAG, kanye nokuhlangana, okwenza kube lula ukusetshenziswa ngokwakha okususelwa ku-jpssum.
     • I-HEC ibuye inikele ngokuziphatha kwe-pseudoplastic, okusho ukuthi i-visa yayo inciphisa ngaphansi kwengcindezi ye-shear, lula uhlelo lokusebenza olulula futhi lusakazeka.
3. I-Hydroxypropyl methyl cellulose (HPMC):
   • Izici:
     • I-Hydroxypropyllylyl methyl cellulose iyi-cellulose ether ekhiqizwayo ukwethula amaqembu we-hydroxypropyl kanye ne-methyl angena emhlane we-cellulose.
     • Ibonisa izakhiwo ezifana ne-methyl cellulose ne-hydroxyyethyl cellulose, kufaka phakathi i-solubity yamanzi, amandla okwenza amafilimu, nokugcinwa kwamanzi.
     • I-HPMC isetshenziswa kabanzi ezintweni zokwakha ezinjengezifiso ze-tile, ama-cend-based Render, kanye namakhompiyutha ezizimele ukwenza ngcono ukusebenza, ukunamathela, kanye nokungaguquguquki.
     • Inikeza ukuqina okuhle, okubophayo, nokuthambisa izakhiwo ezinhlelweni zamashele futhi ziyahambisana nezinye izengezo ezisetshenziswa kakhulu ekwakhiweni kokwakha.
     • I-HPMC isetshenziswa futhi kuma-Pharmaceuticals, imikhiqizo yokudla, kanye nezinto zokunakekelwa komuntu siqu njenge-stabilizer, ukumisa umgqugquzeli we-ejenti, kanye ne-viscosity.
4. I-Carboxymethyl Cellulose (CMC):
   • Izici:
     • I-Carboxymethyl Cellulose iyi-cellulose ether etholakala ku-cellulose ngokuyiphatha nge-sodium hydroxide ne-monochlororocetic acid ukwethula amaqembu e-carboxymethyl.
     • Kuyancibilika emanzini nokwakha amafomu acacile, ama-viscous solutions aqiniswe amahle, aqiniswe, kanye nezakhiwo zokugcina amanzi.
     • I-CMC isetshenziswa kakhulu njengesikhudlwana, i-Binder, kanye ne-Rheology modifier emikhakheni ehlukahlukene, kufaka phakathi ukudla, amakhamishini, izindwangu kanye nephepha.
     • Ezintweni zokwakha, kwesinye isikhathi i-CMC isetshenziswa njenge-ejenti yokugcina amanzi odongeni olususelwa kumasipala kanye nama-grouts, yize kungajwayelekile kunezinye izithako zalo eziphakeme kanye nokuhambisana okuphansi nezinhlelo ezinhle kakhulu.
     • I-CMC isetshenziswa futhi ekwakhiweni kwemithi njenge-ejenti yokumisa okwesikhashana, i-tablet brinder, ne-matrix ekhishwa.

Lezi ngezinye izinhlobo ezivame kakhulu ze-cellulose ether, ngayinye enikeza izakhiwo ezihlukile nezinzuzo zezicelo ezihlukile. Lapho ukhetha i-cellulose ether ukuthola uhlelo oluthile, izici ezinjenge-solubity, ukubonana, ukuhambisana nezinye izengezo, kanye nezimpawu zokusebenza ezifiselekayo kufanele zibhekwe.