Ukwethulwa Komkhiqizo we-Hydroxyethyl Methyl Cellulose HEMC

Ulwazi oluyisisekelo lwe-hydroxyethyl methylcellulose

Igama lesiShayina: Hydroxyethyl methylcellulose
Igama lesiNgisi: Hymetelose328
Isibizo saseShayina: i-hydroxyethyl methyl cellulose;i-hydroxyethyl methyl cellulose;i-hydroxymethyl ethyl cellulose;I-2-hydroxyethyl methyl ether cellulose
Iziteketiso zesiNgisi: Methylhydroxyethylcellulose;I-cellulose;2-hydroxyethyl methyl ether;I-HEMC;I-Tyopur MH[1]
I-Chemistry: I-Hydroymethylmethylcellulose;I-Hydroxyethyl methylcellulose;I-Hydroxymethylethylcellulose.

I-Molecule: I-C2H6O2 xCH4O x PhEur 2002 ichaza i-hydroxyethyl methylcellulose njengengxenye ye-O-methylated, ingxenye ye-O-hydroxymethylated cellulose.Ukucaciswa okuhlukile kuvezwa inani elibonakalayo le-viscosity lika-2% w/v isixazululo samanzi ku-20°C, futhi iyunithi i-mPa s.
Isisindo samangqamuzana: I-PhEur 2002 ichaza i-hydroxyethyl methylcellulose njengengxenye ye-O-methylated, ingxenye ye-O-hydroxymethylated cellulose.Ukucaciswa okuhlukile kuvezwa inani elibonakalayo le-viscosity lika-2% w/v isixazululo samanzi ku-20°C, futhi iyunithi i-mPa s.

Izici eziyinhloko ze-hydroxyethyl methylcellulose (HEMC) yilezi:

1. Ukuncibilika: Kuncibilika emanzini nakwezinye izincibilikisi eziphilayo.I-HEMC ingancibilika emanzini abandayo.Ukugxila kwayo okuphezulu kunqunywa kuphela yi-viscosity.I-Solubility iyahlukahluka ngokuya nge-viscosity.I-viscosity ephansi, i-solubility enkulu.

2. Ukumelana nosawoti: Imikhiqizo ye-HEMC i-non-ionic cellulose ethers futhi ayiwona ama-polyelectrolytes, ngakho-ke iqinile ngokuqhathaniswa nezixazululo ezinamanzi lapho usawoti wensimbi noma ama-electrolyte ephilayo ekhona, kodwa ukwengezwa ngokweqile kwama-electrolyte kungabangela i-gelation kanye nemvula.

3. Umsebenzi ongaphezulu: Ngenxa yomsebenzi osebenzayo ongaphezulu wesixazululo esinamanzi, singasetshenziswa njenge-colloidal protective agent, emulsifier kanye ne-dispersant.

4. Ijeli eshisayo: Uma isixazululo se-HEMC esinamanzi sishiswa ekushiseni okuthile, siba yi-opaque, ama-gel, kanye nemvula, kodwa lapho sipholile ngokuqhubekayo, sibuyela esimweni sokuqala sesisombululo, futhi ijeli nemvula kwenzeka.Izinga lokushisa lincike ikakhulukazi kumafutha abo, izinsiza zokumisa, ama-colloid avikelayo, ama-emulsifiers, njll.

5. Ukungabi namandla kwe-Metabolic kanye nephunga eliphansi kanye nephunga elimnandi: I-HEMC isetshenziswa kakhulu ekudleni nasemithini ngoba ngeke igaywe futhi inephunga eliphansi kanye nephunga elimnandi.

6. Ukumelana nesikhutha: I-HEMC inokumelana kahle nesikhutha kanye nokuzinza okuhle kwe-viscosity ngesikhathi sokugcina isikhathi eside.

7. Ukuzinza kwe-PH: I-viscosity yesisombululo esinamanzi semikhiqizo ye-HEMC ayithinteki neze i-asidi noma i-alkali, futhi inani le-pH lizinzile ngokuqhathaniswa kububanzi obungu-3.0-11.0.

Isicelo: I-Hydroxyethyl methylcellulose ingasetshenziswa njenge-ejenti evikelayo ye-colloidal, i-emulsifier kanye ne-dispersant ngenxa yomsebenzi wayo osebenzayo osebenzayo kusisombululo esinamanzi.Isibonelo saso sokusebenza simi kanje: umthelela we-hydroxyethyl methylcellulose ekusebenzeni kukasimende.IHydroxyethyl methylcellulose iyimpushana emhlophe engenaphunga, enganambitheki, engenabuthi engancibilika emanzini abandayo ukuze yakhe isixazululo se-viscous esisobala.Inezici zokuqina, ukubopha, ukusabalalisa, i-emulsifying, ukwenza ifilimu, ukumisa okwesikhashana, i-adsorbing, i-gelling, i-surface esebenzayo, ukugcina umswakama nokuvikela i-colloid.Njengoba isixazululo esinamanzi sinomsebenzi osebenzayo ongaphezulu, singasetshenziswa njenge-ejenti yokuzivikela ye-colloidal, i-emulsifier ne-dispersant.Isixazululo samanzi se-Hydroxyethyl methylcellulose sine-hydrophilicity enhle futhi iyi-ejenti esebenza kahle yokugcina amanzi.