Cellulose Ether

Cellulose etherInogadzirwa kubva kucellulose kuburikidza nekuita kwe etherification kweimwe kana akawanda etherification agents uye dry grinding. Zvichienderana nemaumbirwo akasiyana emakemikari e ether substituents, cellulose ethers dzinogona kukamurwa kuita anionic, cationic uye nonionic ethers. Ionic cellulose ethers inonyanya kusanganisiracarboxymethyl cellulose ether (CMC); non-ionic cellulose ethers dzinosanganisira zvakanyanyamethyl cellulose ether (MC),hydroxypropyl methyl cellulose ether (HPMC)uye hydroxyethyl cellulose ether.Chlorine ether (HC)nezvimwewo. Maether asina ionic akakamurwa kuita maether anonyungudika mumvura uye maether anonyungudika mumafuta, uye maether asina ionic anonyungudika mumvura anonyanya kushandiswa muzvigadzirwa zvemortar. Kana paine maion ecalcium, ionic cellulose ether haina kugadzikana, saka haiwanzo shandiswa muzvigadzirwa zvemortar zvakasanganiswa nedry-mixed zvinoshandisa simende, slaked lime, nezvimwewo sezvinhu zvekusimbisa. Maether asina ionic anonyungudika mumvura ecellulose anoshandiswa zvakanyanya muindasitiri yezvinhu zvekuvaka nekuda kwekugadzikana kwawo mukumiswa uye kuchengetedza mvura.

Hunhu hweMakemikari eCellulose Ether

Cellulose ether yega yega ine chimiro che cellulose — Anhydroglucose structure. Mukugadzira cellulose ether, cellulose fiber inotanga yapiswa mu alkaline solution, yozorapwa ne etherifying agent. Chigadzirwa che fibrous reaction chinocheneswa uye chinopwanywa kuti chigadzire upfu hwakafanana hune hutete hwakati.

Mukugadzirwa kweMC, methyl chloride chete ndiyo inoshandiswa se etherification agent; kuwedzera kune methyl chloride, propylene oxide inoshandiswawo kuwana mapoka e hydroxypropyl substituent mukugadzirwa kwe HPMC. Ma ether akasiyana-siyana e cellulose ane methyl ne hydroxypropyl substitution ratios dzakasiyana, izvo zvinokanganisa organic compatibility uye thermal gelation temperature ye cellulose ether solutions.