Focus on Cellulose ethers

Pataki ati Lilo Hydroxyethyl Cellulose

1. Awọn ohun-ini ti cellulose hydroxyethyl

Ọja yi jẹ funfun tabi ina ofeefee odorless ati ki o rọrun sisan lulú, 40 mesh sieve oṣuwọn ≥99%; otutu otutu: 135-140 °C; iwuwo ti o han: 0.35-0.61g / milimita; otutu otutu: 205-210 ° C; sisun iyara Losokepupo; iwọn otutu iwọntunwọnsi: 23°C; 6% ni 50%rh, 29% ni 84% rh.

O jẹ tiotuka ninu mejeeji omi tutu ati omi gbona, ati ni gbogbogbo insoluble ni ọpọlọpọ awọn olomi Organic. Igi iki yipada die-die ni iwọn PH iye 2-12, ṣugbọn iki dinku ju iwọn yii lọ.

2. Awọn ohun-ini pataki

Gẹgẹbi surfactant ti kii ṣe ionic,hydroxyethyl celluloseni awọn ohun-ini wọnyi ni afikun si nipọn, idadoro, abuda, lilefoofo, fifi fiimu, pipinka, idaduro omi ati pese colloid aabo:

1. HEC jẹ tiotuka ninu omi gbigbona tabi omi tutu, ati pe ko ṣe itọlẹ ni iwọn otutu ti o ga tabi farabale, eyi ti o jẹ ki o ni ibiti o pọju ti solubility, awọn abuda viscosity ati gelation ti kii-gbona.

2. O jẹ ti kii-ionic ati pe o le ṣe ibagbepọ pẹlu ọpọlọpọ awọn polima ti o ni iyọda omi miiran, awọn surfactants, ati awọn iyọ. O jẹ thickener colloidal ti o dara julọ fun awọn ojutu elekitiroti ifọkansi giga.

3. Agbara idaduro omi jẹ ilọpo meji bi ti methyl cellulose, ati pe o ni ilana sisan ti o dara julọ.

4. Ti a bawe pẹlu methyl cellulose ti a mọ ati hydroxypropyl methyl cellulose, HEC ni agbara ti o ntan kaakiri, ṣugbọn agbara colloid aabo ti o lagbara julọ.

3. Lilo hydroxyethyl cellulose

Ni gbogbogbo ti a lo bi awọn ohun elo ti o nipọn, awọn aṣoju aabo, awọn adhesives, awọn amuduro ati awọn afikun fun igbaradi ti emulsions, jellies, ointments, lotions, cleansers, suppositories and tablets, and also used as hydrophilic gels, skeleton materials, O le ṣee lo lati ṣeto matrix- tẹ awọn igbaradi-itusilẹ, ati pe o tun le ṣee lo bi amuduro ninu ounjẹ.


Akoko ifiweranṣẹ: Oṣu kejila-27-2022
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