Focus on Cellulose ethers

Le Taua ma le Fa'aogaina ole Hydroxyethyl Cellulose

1. Meatotino ole hydroxyethyl cellulose

O lenei oloa e paʻepaʻe poʻo samasama samasama e leai se manogi ma faigofie ona tafe le paʻu, 40 mesh sieve fua faatatau ≥99%; mālūlū mālūlū: 135-140°C; foliga vaaia: 0.35-0.61g/ml; vevela vevela: 205-210°C; mu saoasaoa Fa'agesegese; vevela paleni: 23°C; 6% ile 50%rh, 29% ile 84%rh.

E solu i le vai malulu ma vai vevela, ma e masani ona le mafai ona solu i le tele o solvents organic. O le viscosity e suia laʻititi i le tele o le PH value 2-12, ae o le viscosity e faʻaitiitia i tua atu o lenei laina.

2. Meatotino taua

I le avea ai o se surfactant non-ionic,hydroxyethyl celluloseo lo'o i ai meatotino nei e fa'aopoopo i le mafiafia, fa'agata, fusifusia, fa'afefeteina, fa'asolo ata, fa'asalalauina, fa'atumauina le vai ma tu'uina atu le colloid puipuia:

1. HEC e soluble i le vai vevela poʻo le vai malulu, ma e le faʻafefe i le maualuga o le vevela poʻo le faʻafefe, lea e maua ai le tele o le solubility, uiga viscosity ma le gelation le vevela.

2. E le-ionic ma e mafai ona ola faatasi ma le tele o isi polymers solu vai-soluble, surfactants, ma masima. O se mea e sili ona lelei colloidal mafiafia mo vaifofo electrolyte maualuga maualuga.

3. O le faʻamauina o le vai e faaluaina le maualuga nai lo le methyl cellulose, ma e sili atu le faʻatonutonuina o le tafe.

4. Faʻatusatusa i le methyl cellulose ma le hydroxypropyl methyl cellulose ua iloa, HEC o loʻo i ai le malosi sili ona leaga faʻasalalau, ae o le malosi sili ona puipuia colloid.

3. Le faʻaaogaina o le hydroxyethyl cellulose

E masani ona faʻaaogaina e pei o mafiafia, mea e puipuia ai, faʻapipiʻi, faʻamautu ma faʻaopoopoga mo le sauniuniga o emulsions, jellies, suauu, lotions, faʻamamaina mata, suppositories ma papa, ma faʻaaogaina foi e pei o gels hydrophilic, skeleton mea, E mafai ona faʻaaogaina e saunia ai matrix- fa'aigoa sauniuniga fa'asa'oloto, ma e mafai fo'i ona fa'aoga e fa'amautu i mea'ai.


Taimi meli: Tes-27-2022
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