Aha ngwaahịa:hydroxyethyl methyl celluloseHEMC
Aha bekee: Hymetellose
Utu aha: methyl hydroxyethyl cellulose;MHEC, hydroxyethyl methyl cellulose ether;
hydroxymethyl ethyl cellulose;2-hydroxyethyl methyl ether cellulose
Utu aha Bekee: Methylhydroxyethylcellulose;Cellulose;2-hydroxyethyl methyl ether;HEMC;Tyopur MH[1]
Chemistry: Hydroymethylmethylecellulose;Hydroxyethylmethylcellulose;Hydroxymethylethylcellulose.
Molecules: C2H6O2 xCH4O x PhEur 2002 na-akọwa hydroxyethylmethylcellulose dị ka akụkụ O-methylated, akụkụ O-hydroxymethylated cellulose.A na-akọwapụta nkọwapụta dị iche iche n'usoro nke viscosity pụtara ìhè na mPa s nke 2% w/v mmiri ngwọta na 20°C.
Ibu arọ molekul: PhEur 2002 na-akọwa hydroxyethylmethylcellulose dị ka akụkụ O-methylated, akụkụ O-hydroxymethylated cellulose.A na-akọwapụta nkọwapụta dị iche iche n'usoro nke viscosity pụtara ìhè na mPa s nke 2% w/v mmiri ngwọta na 20°C.
Isi njirimara nke hydroxyethyl methyl cellulose (HEMC) bụ:
1. Solubility: soluble na mmiri na ụfọdụ ihe mgbaze organic, HEMC nwere ike igbari na mmiri oyi, a na-ekpebi ihe kachasị elu naanị site na viscosity, solubility dị iche iche na viscosity, na-ebelata viscosity, otú ahụ ka solubility dị ukwuu.
2. Nguzogide nnu: ngwaahịa HEMC bụ ndị na-abụghị ionic cellulose ethers na ọ bụghị polyelectrolytes, ya mere na ọnụnọ nke metal salts ma ọ bụ organic electrolytes, ha na-adịtụ kwụsiri ike na mmiri ngwọta, ma oké mgbakwunye nke electrolytes nwere ike ime ka gelation na ọdịda.
3. Ọrụ elu: Dị ka ngwọta mmiri nwere ọrụ ọrụ elu, enwere ike iji ya dị ka onye na-echebe colloid, emulsifier na dispersant.
4. Thermal gel: Mgbe ngwaahịa HEMC aqueous ngwọta na-ekpo ọkụ na ụfọdụ okpomọkụ, ọ na-aghọ opaque, gels, na-etolite a precipitate, ma mgbe ọ na-anọgide na-ajụ oyi, ọ na-alaghachi na mbụ ngwọta ala, na nke a gel na mmiri ozuzo mere. .Ọnọdụ okpomọkụ na-adabere karịsịa na mmanụ aṅụ ha, ihe enyemaka nkwụsịtụ, colloid nchebe, emulsifiers, wdg.
5. Metabolic inertness na obere isi na isi ísì: A na-eji HEMC eme ihe n'ọtụtụ nri na ọgwụ n'ihi na ọ naghị edozi ya ma nwee obere isi na isi ísì.
6. Antifungal: HEMC nwere ikike antifungal dị mma na nkwụsi ike viscosity dị mma n'oge nchekwa ogologo oge.
7. Nkwụsi ike PH: Acid ma ọ bụ alkali adịghị emetụta viscosity nke ngwaahịa HEMC ngwaahịa aqueous, na pH uru kwụsiri ike na nso nke 3.0-11.0.
Ngwa: Hydroxyethyl methyl cellulose ike ga-eji dị ka colloid echebe gị n'ụlọnga, emulsifier na dispersant n'ihi elu-arụ ọrụ ọrụ nke aqueous ngwọta.Ihe atụ nke ngwa ya bụ nke a: Mmetụta nke hydroxyethyl methyl cellulose na njirimara nke ciment.Hydroxyethyl methylcellulose bụ ntụ ọcha na-adịghị na-esi ísì, nke na-adịghị egbu egbu nke na-agbaze n'ime mmiri oyi iji mepụta ngwọta doro anya na nke viscous.Ọ nwere Njirimara nke ndim, njide, na-achụsasị, emulsifying, film-akpụ, suspending, adsorbing, gelling, elu-arụ ọrụ, na-ejigide mmiri na-echebe colloid.N'ihi ọrụ na-arụ ọrụ elu nke ngwọta mmiri, enwere ike iji ya dị ka onye na-echebe colloid, emulsifier na onye na-ekesa.Hydroxyethyl methyl cellulose ngwọta aqueous nwere ezigbo hydrophilicity na ọ bụ ihe na-arụ ọrụ nke ọma na-ejigide mmiri.
Oge nzipu: Ọkt-09-2022