1. Gel kub (0.2% daws) 50-90 ° C.
2. Soluble hauv dej thiab feem ntau polar c thiab dej ua feem ntawm ethanol / dej, tsis muaj ethadoroethan, thiab off turbid hauv dej colloidal tov. Cov tshuaj aqueous muaj cov haujlwm saum npoo av, siab transparency thiab ruaj khov ua tau zoo.
3. HPMC muaj cov cuab yeej ntawm thermal gelation. Cov khoom aqueous yog rhuab los ua cov gel thiab precipitates, thiab tom qab ntawd yaj tom qab txias. Qhov gelation kub ntawm cov kev sib txawv txawv yog txawv. Solubility sib txawv nrog viscosity. Qhov qis dua viscosity, muaj ntau dua cov solubility. Cov kev sib txawv ntawm HPMC muaj qee qhov sib txawv hauv lawv cov zog, thiab kev sib txawv ntawm HPMC hauv dej tsis cuam tshuam los ntawm tus nqi PH.
4. Paus taus loj: 100 Mesh Pass tus nqi yog ntau dua 98.5%. Bulk ntom: 0.25-0.70g / (feem ntau nyob ib ncig 0.4g /), tshwj xeeb nqus tau 1.26-1.31. Discoloration kub: 180-200 ° C, carbonization kub: 280-300 ° C. Cov mexoxyl tus nqi li ntawm 19.0% rau 30.0%, thiab hydroxypropyl muaj nqi los ntawm 4% mus rau 12%. Viscosity (22 ° C, 2%) 5 ~ 200000mPA .s. Gel kub (0.2%) 50-90 ° C
5. HPMC muaj cov yam ntxwv ntawm kev muaj peev xwm tuab, ntsev tawm, muaj ntau zaj duab xis tsis kam, dispersibility thiab cohesiveness.
Lub Sijhawm Post: Apr-16-202