Zambiri Zoyambira za Hydroxyethyl Methyl Cellulose

Dzina la malonda:hydroxyethyl methyl celluloseMtengo HEMC

Dzina la Chingerezi: Hymetelose

Alias: methyl hydroxyethyl cellulose; MHEC, hydroxyethyl methyl cellulose ether;

hydroxymethyl ethyl cellulose; 2-hydroxyethyl methyl ether cellulose

Dzina lachingerezi: Methylhydroxyethylcellulose; Ma cellulose; 2-hydroxyethyl methyl ether; HEMC; Tyopur MH[1]

Chemistry: Hydroymethylmethylecellulose; Hydroxyethyl methylcellulose; Hydroxymethylethyl cellulose.

Mamolekyulu: C2H6O2 xCH4O x PhEur 2002 imatanthauzira hydroxyethylmethylcellulose ngati gawo la O-methylated, pang'ono O-hydroxymethylated cellulose. Mafotokozedwe osiyanasiyana amasonyezedwa potengera kukhuthala koonekera mu mPa s ya 2% w/v yankho lamadzi pa 20°C.

Kulemera kwa molekyulu: PhEur 2002 imatanthauzira hydroxyethylmethylcellulose ngati gawo la O-methylated, pang'ono O-hydroxymethylated cellulose. Mafotokozedwe osiyanasiyana amasonyezedwa potengera kukhuthala koonekera mu mPa s ya 2% w/v yankho lamadzi pa 20°C.

Makhalidwe akuluakulu a hydroxyethyl methyl cellulose (HEMC) ndi awa:

1. Kusungunuka: kusungunuka m'madzi ndi zina zosungunulira zamoyo, HEMC ikhoza kusungunuka m'madzi ozizira, kusungunuka kwake kwakukulu kumangotsimikiziridwa ndi kukhuthala, kusungunuka kumasiyana ndi mamasukidwe akayendedwe, kutsika kwa kukhuthala, kumapangitsanso kusungunuka.

2. Kukana kwa mchere: Mankhwala a HEMC ndi osakhala a ionic cellulose ethers ndipo si polyelectrolytes, kotero pamaso pa mchere wachitsulo kapena ma electrolyte achilengedwe, amakhala okhazikika muzitsulo zamadzimadzi, koma kuwonjezera kwambiri kwa electrolyte kungayambitse gelation ndi mpweya.

3. Ntchito yapamtunda: Monga njira yamadzimadzi imakhala ndi ntchito yapamtunda, imatha kugwiritsidwa ntchito ngati colloid protective agent, emulsifier ndi dispersant.

4. Gel gel yotentha: Pamene mankhwala a HEMC amadzimadzi amadzimadzi amatenthedwa kutentha kwina, amakhala opaque, gels, ndipo amapanga mpweya, koma akakhazikika mosalekeza, amabwerera ku chikhalidwe choyambirira, ndipo gel ndi mpweya zimachitika. . Kutentha kumadalira makamaka mafuta awo, kuyimitsa zothandizira, colloids zoteteza, emulsifiers, etc.

5. Metabolic inertness ndi fungo lochepa ndi fungo labwino: HEMC imagwiritsidwa ntchito kwambiri muzakudya ndi zamankhwala chifukwa siyimapangidwa ndipo imakhala ndi fungo lochepa komanso fungo labwino.

6. Antifungal: HEMC ili ndi mphamvu yabwino ya antifungal komanso kukhazikika kwa viscosity panthawi yosungirako nthawi yayitali.

7. Kukhazikika kwa PH: Kukhuthala kwa mankhwala a HEMC amadzimadzi amadzimadzi sikukhudzidwa kwambiri ndi asidi kapena alkali, ndipo pH mtengo ndi wosasunthika pakati pa 3.0-11.0.

Ntchito: Hydroxyethyl methyl mapadi angagwiritsidwe ntchito ngati colloid zoteteza wothandizila, emulsifier ndi dispersant chifukwa pamwamba yogwira ntchito ya amadzimadzi njira. Chitsanzo cha ntchito yake ndi motere: Zotsatira za hydroxyethyl methyl cellulose pa katundu wa simenti. Hydroxyethyl methylcellulose ndi ufa woyera wopanda fungo, wosakoma, wopanda poizoni womwe umasungunuka m'madzi ozizira kuti ukhale wowoneka bwino, wowoneka bwino. Lili ndi mphamvu zowonjezera, kumanga, kubalalika, emulsifying, kupanga mafilimu, kuyimitsa, kutsatsa, gelling, pamwamba, kusunga chinyezi ndi kuteteza colloids. Chifukwa cha ntchito yogwira ntchito ya njira yamadzimadzi, imatha kugwiritsidwa ntchito ngati colloid protective agent, emulsifier ndi dispersant. Hydroxyethyl methyl cellulose aqueous solution ili ndi hydrophilicity yabwino ndipo ndi yosunga bwino madzi.