Ulwazi oluSisiseko lweI-Hydroxyethyl Methyl Cellulose
Igama lesiTshayina: i-hydroxyethyl methyl cellulose
Igama lesiNgesi: Hymetellose328
Igama lesiTshayina elithi: i-hydroxyethyl methyl cellulose; i-hydroxyethyl methyl cellulose; i-hydroxymethyl ethyl cellulose; i-2-hydroxyethyl methyl ether cellulose
Igama elivela kwisiNgesi: iMethylhydroxyethylcellulose; iCellulose; i-2-hydroxyethyl methyl ether; iHEMC; iTyopur MH[1]
Ikhemistri: I-Hydroymethylmethylecellulose; I-Hydroxyethylmethylcellulose; I-Hydroxymethylethylcellulose.
Iimolekyuli: C2H6O2 xCH4O x PhEur 2002 ichaza i-hydroxyethylmethylcellulose njenge-cellulose ene-O-methylated kancinci, i-O-hydroxymethylated kancinci. Iinkcukacha ezahlukeneyo zichazwe ngokwe-viscosity ebonakalayo kwi-mPas yesisombululo samanzi se-2% w/v kwi-20°C.
Ubunzima beMolekyuli: PhEur 2002 ichaza i-hydroxyethylmethylcellulose njenge-cellulose ene-O-methylated kancinci, i-O-hydroxymethylated kancinci. Iinkcukacha ezahlukeneyo zichazwe ngokwe-viscosity ebonakalayo kwi-mPas yesisombululo samanzi se-2% w/v kwi-20°C.
Iimpawu eziphambili ze-hydroxyethyl methyl cellulose (HEMC) zezi:
1. Ukunyibilika: xa inyibilika emanzini nakwezinye izinyibilikisi zendalo, i-HEMC inokunyibilika emanzini abandayo, uxinaniso lwayo oluphezulu lumiselwa kuphela kukunyibilika, ukunyibilika kuyahluka ngokwekunyibilika, kokukhona ukunyibilika kuphantsi, kokukhona ukunyibilika kukhulu.
2. Ukumelana netyuwa: Iimveliso ze-HEMC zii-non-ionic cellulose ethers kwaye azizizo ii-polyelectrolytes, ngoko ke xa kukho iityuwa zesinyithi okanye ii-electrolytes zendalo, zizinzile kwizisombululo zamanzi, kodwa ukongezwa kakhulu kwee-electrolytes kunokubangela i-gelation kunye nemvula.
3. Umsebenzi womphezulu: Njengoko isisombululo samanzi sinomsebenzi womsebenzi womphezulu, singasetyenziswa njenge-arhente yokukhusela i-colloid, i-emulsifier kunye ne-dispersant.
4. Ijeli yobushushu: Xa isisombululo samanzi semveliso ye-HEMC sishushubezwa kubushushu obuthile, siba yi-opaque, iijeli, kwaye senza i-precipitate, kodwa xa ipholiswa rhoqo, ibuyela kwimeko yayo yokuqala yesisombululo, kwaye le jeli kunye nemvula ziyavela. Ubushushu buxhomekeke kakhulu kwizinto ezithambisayo, izixhobo zokumisa, ii-colloids zokukhusela, ii-emulsifiers, njl.
5. Ukungakwazi ukusebenza kwe-metabolism kunye nevumba nevumba eliphantsi: I-HEMC isetyenziswa kakhulu ekutyeni nakwezonyango kuba ayigaywanga kwaye inevumba nevumba eliphantsi.
6. I-Antifungal: I-HEMC inamandla amahle okulwa ne-fungus kunye nokuqina okuhle kwe-viscosity ngexesha lokugcina ixesha elide.
7. Uzinzo lwe-PH: Ukuqina kwe-viscosityI-HEMCisisombululo samanzi semveliso asichaphazeleki kakhulu yi-asidi okanye i-alkali, kwaye ixabiso le-pH lizinzile kuluhlu lwe-3.0-11.0.
Ukusetyenziswa: I-Hydroxyethyl methyl cellulose ingasetyenziswa njenge-arhente yokukhusela i-colloid, i-emulsifier kunye ne-dispersant ngenxa yomsebenzi osebenzayo kumphezulu wesisombululo samanzi. Umzekelo wokusetyenziswa kwayo ngolu hlobo lulandelayo: Isiphumo se-hydroxyethyl methyl cellulose kwiimpawu zesamente. I-Hydroxyethyl methylcellulose yipowder emhlophe engenavumba, engenancasa, engenatyhefu enyibilika emanzini abandayo ukuze yenze isisombululo esicacileyo nesixineneyo. Ineempawu zokutyeba, ukubopha, ukusasaza, ukuhlanganisa, ukwenza ifilimu, ukumisa, ukufunxa, ukwenza i-gelling, ukusebenza kumphezulu, ukugcina umswakama kunye nokukhusela ii-colloids. Ngenxa yomsebenzi osebenzayo kumphezulu wesisombululo samanzi, ingasetyenziswa njenge-arhente yokukhusela i-colloid, i-emulsifier kunye ne-dispersant. Isisombululo samanzi se-Hydroxyethyl methyl cellulose sinobumanzi obuhle kwaye sisixhobo sokugcina amanzi esisebenza kakuhle.
Ixesha leposi: Epreli-26-2024