O le a le hydroxyethyl methylcellulose?

igoa: hydroxyethyl methyl cellulose; hydroxyethyl methyl cellulose; hydroxymethyl ethyl cellulose; 2-hydroxyethyl methyl eter cellulose
Fa'aigoa fa'aPeretania: Methylhydroxyethylcellulose; Selulosa; 2-hydroxyethyl methyl eter; HEMC; Tyopur MH[1]
Kemisi: Hydroymethylmethylcellulose;Hydroxyethylmethylcellulose; Hydroxymethylethylcellulose.
Resitala CAS: 9032-42-2

Molecule: C2H6O2 xCH4O x PhEur 2002 faʻamatalaina le hydroxyethyl methylcellulose o se vaega O-methylated, vaega O-hydroxymethylated cellulose. O faʻamatalaga eseese o loʻo faʻaalia e le tau o le viscosity manino o le 2% w / v vai fofo ile 20 ° C, ma o le iunite o mPa s.
Mole mole mamafa: PhEur 2002 faauigaina hydroxyethyl methylcellulose o se vaega O-methylated, vaega O-hydroxymethylated cellulose. O faʻamatalaga eseese o loʻo faʻaalia e le tau o le viscosity manino o le 2% w / v vai fofo ile 20 ° C, ma o le iunite o mPa s.

O uiga autu o le hydroxyethyl methylcellulose (HEMC) o:

1. Solubility: Solu i le vai ma nisi solvents organic. HEMC e mafai ona solo i vai malulu. O lona maualuga maualuga e na'o le fuaina o le viscosity. E eseese le solu ma le viscosity. O le maualalo o le viscosity, o le tele o le solubility.

2. Masima tetee: HEMC oloa e le-ionic cellulose ethers ma e le o polyelectrolytes, o lea e fai si mautu i vaifofo vai pe a iai masima uʻamea po electrolytes organic, ae o le faaopoopo tele o electrolytes e mafai ona mafua ai gelation ma timuga.

3. Fa'asagaga gaioioiga: Ona o le galuega galue i luga o le vaifofo vai, e mafai ona faaaogaina e avea o se colloidal puipuiga sooupu, emulsifier ma dispersant.

4. Thermal gel: Pe a faʻamafanafanaina le vaifofo vai o le HEMC i se vevela patino, e avea opaque, gels, ma paʻu, ae a faʻaauau pea ona faʻamafanafanaina, e toe foʻi i le tulaga muamua o le fofo, ma le gel ma le timuga e tupu. O le vevela e faʻalagolago lava i latou lubricants, fesoasoani faʻamalolo, colloids puipui, emulsifiers, ma isi.

5. Metabolic inertness ma maualalo le manogi ma le manogi: HEMC e masani ona faʻaaogaina i meaʻai ma vailaʻau aua o le a le faʻafefeteina ma e maualalo le manogi ma le manogi.

6. Mildew tete'e: HEMC e fai si lelei mildew tetee ma lelei viscosity mautu i taimi umi teuina.

7. Faʻamautu PH: O le viscosity o le vaifofo vai o oloa HEMC e tau le afaina i le acid poʻo le alkali, ma o le tau o le pH e faʻamautu i le va o le 3.0-11.0.
Talosaga: Hydroxyethyl methylcellulose e mafai ona faʻaaogaina e avea o se mea e puipuia ai colloidal, emulsifier ma dispersant ona o lona galue malosi i luga o le vai. O lona faʻataʻitaʻiga faʻataʻitaʻiga e faʻapea: o le aafiaga o le hydroxyethyl methylcellulose i le faʻatinoga o le sima. Hydroxyethyl methylcellulose ose pa'epa'e pa'epa'e e leai se manogi, e leai se tofo, e le'o'ona e mafai ona fa'amavae i le vai malulu e fai ai se vaifofo manino. O loʻo i ai uiga o le mafiafia, fusifusia, faʻasalalau, emulsifying, ata tifaga, faʻagata, adsorbing, gelling, galue i luga, tausia le susu ma le puipuia o colloid. Talu ai o le vaifofo vai o loʻo i ai se galuega galue i luga, e mafai ona faʻaaogaina e avea o se mea e puipuia ai colloidal, emulsifier ma dispersant. Hydroxyethyl methylcellulose vaifofo vai e lelei le hydrophilicity ma o se so'o lelei taofi vai.