Zita rechigadzirwa:hydroxyethyl methyl celluloseHEMC
Zita reChirungu: Hymetelose
Alias: methyl hydroxyethyl cellulose; MHEC,hydroxyethyl methyl cellulose ether;
hydroxymethyl ethyl cellulose; 2-hydroxyethyl methyl ether cellulose
Chirungu aas: Methylhydroxyethylcellulose; Cellulose; 2-hydroxyethyl methyl ether; HEMC; Tyopur MH[1]
Chemistry: Hydroymethylmethylecellulose; Hydroxyethyl methylcellulose; Hydroxymethylethylcellulose.
Mamolekoro: C2H6O2 xCH4O x PhEur 2002 inotsanangura hydroxyethylmethylcellulose sechikamu cheO-methylated, chikamu O-hydroxymethylated cellulose. Izvo zvakasiyana-siyana zvinotsanangurwa maererano nezvinooneka viscosity mumPas ye 2% w/v aqueous solution pa20°C.
Molecular uremu: PhEur 2002 inotsanangura hydroxyethylmethylcellulose sechikamu cheO-methylated, chikamu O-hydroxymethylated cellulose. Izvo zvakasiyana-siyana zvinotsanangurwa maererano nezvinooneka viscosity mumPas ye 2% w/v aqueous solution pa20°C.
Iwo makuru maitiro ehydroxyethyl methyl cellulose (HEMC) ndeaya:
1. Solubility: yakanyungudutswa mumvura uye mamwe organic solvents, HEMC inogona kunyungudutswa mumvura inotonhora, iyo yakanyanya kunyungudutswa inongogadziriswa ne viscosity, solubility inosiyana ne viscosity, iyo yakaderera iyo viscosity, iyo yakakura solubility.
2. Kurwisana kwemunyu: HEMC zvigadzirwa hazvisi-ionic cellulose ethers uye haisi polyelectrolytes, saka pamberi pesimbi yemunyu kana organic electrolytes, inenge yakagadzikana mukugadzirisa kwemvura, asi kuwedzera kwakanyanya kwe electrolytes kunogona kukonzera gelation uye kunaya kwemvura.
3. Chiitiko chepamusoro: Sezvo mhinduro ine mvura ine pamusoro pekuita basa, inogona kushandiswa se colloid inodzivirira agent, emulsifier uye dispersant.
4. Thermal gel: Kana HEMC chigadzirwa aqueous solution ichipisa kune imwe tembiricha, inova opaque, gels, uye inoumba mvura, asi kana ikaramba ichitonhorera, inodzokera kune yekutanga mhinduro mamiriro, uye gel iyi uye kunaya kunoitika. . Kupisa kunoenderana zvakanyanya nemafuta avo, kumisa aids, inodzivirira colloids, emulsifiers, nezvimwe.
5. Metabolic inertness uye kunhuhwirira kwakaderera uye kunhuhwirira: HEMC inoshandiswa zvakanyanya mukudya nemishonga nokuti haina kugadzirwa uye ine kunhuhwirira kwakaderera uye kunhuhwirira.
6. Antifungal: HEMC ine yakanaka antifungal kugona uye yakanaka viscosity kugadzikana panguva yekuchengetedza kwenguva refu.
7. PH kugadzikana: The viscosity yeHEMC chigadzirwa aqueous solution haigoni kukanganiswa neasidhi kana alkali, uye pH inokosha inenge yakagadzikana muhuwandu hwe3.0-11.0.
Chikumbiro: Hydroxyethyl methyl cellulose inogona kushandiswa se colloid inodzivirira agent, emulsifier uye dispersant nekuda kweiyo yepamusoro inoshanda basa reaqueous solution. Muenzaniso wekushandiswa kwayo ndeuyu: Mhedzisiro yehydroxyethyl methyl cellulose pane zvinhu zvesimende. Hydroxyethyl methylcellulose inonhuhwirira, isinganakidze, isina chepfu chena poda inonyungudika mumvura inotonhora kuti igadzire mhinduro yakajeka, ine viscous. Iyo ine zvimiro zvekukora, kusunga, kuparadzira, emulsifying, firimu-kuumba, kumisa, adsorbing, gelling, pamusoro-inoshanda, kuchengetedza unyoro uye kudzivirira colloids. Nekuda kweiyo yepamusoro inoshanda basa reiyo aqueous solution, inogona kushandiswa se colloid inodzivirira agent, emulsifier uye dispersant. Hydroxyethyl methyl cellulose aqueous solution ine yakanaka hydrophilicity uye inonyatso shandiswa kuchengetedza mvura.
Nguva yekutumira: Oct-09-2022