Mtengo wosiyanasiyana wa kutentha kwa gel mu hydroxypropyl methylcellulose

1. Gel kutentha (0.2% yankho) 50-90°C.

2. Kusungunuka m'madzi ndi polar kwambiri c ndi gawo loyenera la ethanol / madzi, propanol / madzi, dichloroethane, ndi zina zotero, zosasungunuka mu etha, acetone, ethanol absolute, ndi kutupa momveka bwino kapena pang'ono turbid m'madzi ozizira a colloidal solution.Njira yothetsera madzi imakhala ndi zochitika zapamtunda, zowonekera kwambiri komanso zokhazikika.

3. HPMC ali ndi katundu wa matenthedwe gelation.The mankhwala amadzimadzi njira ndi mkangano kupanga gel osakaniza ndi precipitates, ndiyeno dissolves pambuyo kuzirala.Kutentha kwa gelation kwazinthu zosiyanasiyana kumasiyana.Kusungunuka kumasiyanasiyana ndi kukhuthala.M'munsi mamasukidwe akayendedwe, kwambiri solubility.Mafotokozedwe osiyanasiyana a HPMC ali ndi kusiyana kwina kwa katundu wawo, ndipo kusungunuka kwa HPMC m'madzi sikukhudzidwa ndi pH mtengo.

4. Tinthu kukula: 100 mauna pass rate ndi wamkulu kuposa 98.5%.Kachulukidwe kachulukidwe: 0.25-0.70g/ (nthawi zambiri pafupifupi 0.4g/), mphamvu yokoka yeniyeni 1.26-1.31.Kutentha kwa kutentha: 180-200 ° C, kutentha kwa carbonization: 280-300 ° C.Mtengo wa methoxyl umachokera ku 19.0% mpaka 30.0%, ndipo mtengo wa hydroxypropyl umachokera ku 4% mpaka 12%.Viscosity (22°C, 2%) 5～200000mPa .s.Kutentha kwa gel osakaniza (0.2%) 50-90 ° C

5. HPMC ali ndi makhalidwe thickening luso, kukhetsa mchere, PH bata, kusunga madzi, dimensional bata, kwambiri mafilimu kupanga katundu, osiyanasiyana enzyme kukana, dispersibility ndi cohesiveness.