Lim dej: Nws yog hais txog cov dej fwj ua los ntawm distillation, deionization, thim rov qab osmosis, thiab lwm yam, uas ua tau raws li cov lus txhais ntawm cov dej ntshiab hauv qhov tseeb hauv Teb Chaws Asmeskas Pharmacopeia.
HPMC:Nws yog ib hom tseem ceeb ntawm non-ionic cellulose sib xyaw ether. Nws tsis muaj ntxhiab, tsis qab thiab tsis muaj kuab lom, thiab nws cov khoom tiav yog hmoov dawb los yog xoob fibrous, nrog qhov loj me dhau 80 mesh sieve. Nws tsis cuam tshuam nrog hnyav hlau. HPMC yog qhov ua tau yog ib hom methyl cellulose hloov kho los ntawm methane oxide (ntiv nplhaib methyl oxypropylene), yog li nws muaj cov yam ntxwv zoo ntawm methyl cellulose uas yog soluble hauv dej txias thiab insoluble hauv dej kub, thiab nws cov solubility hauv organic solvents zoo dua li dej solubility , nws yog soluble hauv anhydrous methanol thiab ethanol, thiab kuj yog soluble hauv chlorinated hydrocarbons xws li dichloromethane, trichloromethane thiab trimethylene oxide. Nws yog soluble hauv anhydrous methanol thiab ethanol, tab sis kuj soluble hauv chlorinated hydrocarbons xws li methylene chloride, trichloroethane thiab cov kuab tshuaj organic xws li acetone, isopropanol thiab diacetone cawv.
Tus Neeg Sawv Cev Muag Khoom: Tus neeg sawv cev Gel hais txog cov tshuaj thiab cov neeg tsim nyog tau ua los ntawm homogeneous, ncua kev kawm lossis emulsion hom roj hmab tuab ua kua lossis cov khoom npaj ua ib nrab. Tus neeg saib xyuas gel muaj ib-theem dispersion system thiab ob-theem dispersion system, yog ob-theem dispersion system ntawm tus neeg sawv cev gel yog molecules me me ntawm inorganic tshuaj colloidal hais hauv cov kua hauv tus qauv reticular, nrog thixotropy, tseem hu ua mixed- tus neeg saib xyuas cov khoom siv tso tawm, xws li txhuas hydroxide gel. Kev thov rau hauv thaj chaw ntawm tus neeg saib xyuas gel yog ib qho kev faib tawm, thiab tau muab faib ua tus neeg sawv cev rau cov kua roj thiab cov roj tso kua muag.
