Focus on Cellulose ethers

Hydroxypropyl Methyl Cellulose HPMC akoyawo

Hydroxypropyl Methyl Cellulose HPMC akoyawo

Ga akoyawo ati idurosinsin išẹ.

HPMC ni ohun-ini ti gelation gbona. Ọja olomi ojutu ti wa ni kikan lati fẹlẹfẹlẹ kan ti gel ati precipitates, ati ki o dissolves lẹhin itutu. Iwọn otutu gelation ti awọn pato pato yatọ. Solubility yatọ pẹlu iki. Isalẹ awọn iki, ti o tobi ni solubility. Awọn pato pato ti HPMC ni awọn iyatọ kan ninu awọn ohun-ini wọn, ati itujade ti HPMC ninu omi ko ni ipa nipasẹ iye pH.

Iwọn patiku: Oṣuwọn mesh mesh 100 tobi ju 98.5%.

Olopobobo iwuwo: 0.25-0.70g / (nigbagbogbo nipa 0.4g /), pato walẹ 1.26-1.31.

Iwọn otutu iyipada: 200-200C,

Carbonization otutu: 280-300°C.

Iwọn methoxy 19.0% si 30.0%,

Hydroxypropyl iye 4% si 12%.

Viscosity (22℃, 2%) 5~200000mPa.s.

Iwọn gel (0.2%) jẹ 50-90 ° C.

HPMC ni awọn abuda ti agbara ti o nipọn, iyọda iyọ, PH iduroṣinṣin, idaduro omi, iduroṣinṣin iwọn, ohun-ini fiimu ti o dara julọ ati ibiti o pọju ti resistance enzyme, dispersibility ati cohesiveness.


Akoko ifiweranṣẹ: Oṣu Karun-17-2023
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