Alaye ipilẹ ti Hydroxyethyl Methyl Cellulose

Orukọ ọja:hydroxyethyl methyl celluloseHEMC

Orukọ Gẹẹsi: Hymetellose

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

hydroxymethyl ethyl cellulose;2-hydroxyethyl methyl ether cellulose

English inagijẹ: Methylhydroxyethylcellulose;Cellulose;2-hydroxyethyl methyl ether;HEMC;Tyopur MH[1]

Kemistri: Hydroymethylmethylecellulose;Hydroxyethylmethylcellulose;Hydroxymethylethylcellulose.

Molecules: C2H6O2 xCH4O x PhEur 2002 asọye hydroxyethylmethylcellulose bi O-methylated apa kan, O-hydroxymethylated cellulose.Awọn pato pato jẹ afihan ni awọn ofin ti iki ti o han ni awọn mPa s ti 2% w/v ojutu olomi ni 20°C.

Òṣuwọn molikula: PhEur 2002 n ṣalaye hydroxyethylmethylcellulose gẹgẹbi O-methylated apakan, O-hydroxymethylated cellulose.Awọn pato pato jẹ afihan ni awọn ofin ti iki ti o han gbangba ni mPa s ti 2% w/v ojutu olomi ni 20°C.

Awọn abuda akọkọ ti hydroxyethyl methyl cellulose (HEMC) jẹ:

1. Solubility: tiotuka ninu omi ati diẹ ninu awọn olutọpa Organic, HEMC le ti wa ni tituka ni omi tutu, ifọkansi ti o pọju nikan ni ipinnu nipasẹ iki, isokuso yatọ pẹlu viscosity, isalẹ iki, ti o pọju.

2. Iyọ iyọ: Awọn ọja HEMC jẹ awọn ethers cellulose ti kii-ionic ati pe kii ṣe polyelectrolytes, nitorina ni iwaju awọn iyọ irin tabi awọn elekitiroti eleto, wọn jẹ iduroṣinṣin ni awọn iṣeduro olomi, ṣugbọn afikun afikun ti awọn elekitiroti le fa gelation ati ojoriro.

3. Iṣẹ ṣiṣe oju: Bi ojutu olomi ti ni iṣẹ iṣẹ ṣiṣe dada, o le ṣee lo bi oluranlowo aabo colloid, emulsifier ati dispersant.

4. Gel gbona: Nigbati ojutu olomi ọja HEMC ba gbona si iwọn otutu kan, o di akomo, awọn gels, ati pe o ni itọlẹ, ṣugbọn nigbati o ba tutu nigbagbogbo, o pada si ipo ojutu atilẹba, ati jeli ati ojoriro yii waye. .Iwọn otutu da lori awọn lubricants wọn, awọn iranlọwọ idaduro, awọn colloid aabo, emulsifiers, ati bẹbẹ lọ.

5. Aisedeede ti iṣelọpọ ati õrùn kekere ati lofinda: HEMC ti wa ni lilo pupọ ni ounjẹ ati oogun nitori pe ko ni iṣelọpọ ati pe o ni oorun kekere ati lofinda.

6. Antifungal: HEMC ni agbara antifungal ti o dara ati iduroṣinṣin viscosity ti o dara lakoko ipamọ igba pipẹ.

7. PH iduroṣinṣin: Awọn viscosity ti HEMC ọja olomi ojutu ti wa ni o fee fowo nipasẹ acid tabi alkali, ati awọn pH iye jẹ jo idurosinsin ni ibiti o ti 3.0-11.0.

Ohun elo: Hydroxyethyl methyl cellulose le ṣee lo bi colloid aabo oluranlowo, emulsifier ati dispersant nitori awọn dada lọwọ iṣẹ ti olomi ojutu.Apeere ti ohun elo rẹ jẹ bi atẹle: Ipa ti hydroxyethyl methyl cellulose lori awọn ohun-ini ti simenti.Hydroxyethyl methylcellulose jẹ alaini oorun, adun, lulú funfun ti ko ni majele ti o tuka ninu omi tutu lati ṣe agbekalẹ ti o han gbangba, ojutu viscous.O ni awọn ohun-ini ti nipọn, abuda, pipinka, emulsifying, ṣiṣẹda fiimu, suspending, adsorbing, gelling, dada-ṣiṣẹ, idaduro ọrinrin ati aabo awọn colloid.Nitori iṣẹ ṣiṣe dada ti ojutu olomi, o le ṣee lo bi oluranlowo aabo colloid, emulsifier ati dispersant.Hydroxyethyl methyl cellulose aqueous ojutu ni o ni hydrophilicity ti o dara ati ki o jẹ kan ga-ṣiṣe omi-idaduro oluranlowo.