Hydroxypropyl methylcellulose (HPMC) tau dhau los ua cov khoom siv feem ntau hauv cov ntxhua khaub ncaws vim nws cov thickening zoo heev, dej tuav thiab emulsifying zog.HPMC yog ib qho hluavtaws derivative ntawm cellulose, ib tug natural polymer pom nyob rau hauv cov nroj tsuag.HPMC yog cov dej-soluble polymer nrog ntau yam kev siv hauv kev lag luam thiab kev tsim khoom.Hauv cov tshuaj ntxhua khaub ncaws, HPMC yog siv los txhim kho kev ua haujlwm tu tag nrho ntawm cov khoom.
HPMC yog ib yam khoom muaj kuab heev.Lub solubility ntawm HPMC nyob ntawm ntau yam, suav nrog nws qhov hnyav molecular, qib hloov pauv, thiab kub.Feem ntau, HPMC nthuav tawm siab solubility hauv dej thiab polar solvents.HPMC muaj qhov hnyav molecular ntau ntawm 10,000 txog 1,000,000 Da thiab feem ntau muaj cov dej solubility ntawm 1% mus rau 5%, nyob ntawm qib thiab kev xav.Kev solubility ntawm HPMC hauv dej yog cuam tshuam los ntawm ntau yam xws li pH, kub thiab concentration.
Hauv cov tshuaj ntxhua khaub ncaws, HPMC nrog cov kev xav tau solubility siab yuav tsum tau siv los xyuas kom meej tias cov tshuaj ntxuav tau zoo hauv dej.Kev solubility ntawm HPMC hauv cov ntxhua khaub ncaws ntxhua khaub ncaws yog cuam tshuam los ntawm ntau yam, suav nrog lwm cov khoom xyaw, qhov kub thiab txias ntawm lub voj voog ntxuav thiab qhov tawv ntawm cov dej.Dej hardness cuam tshuam rau kev solubility ntawm HPMC vim hais tias ntau dua ntawm cov ntxhia yaj, xws li calcium thiab magnesium, cuam tshuam nrog kev sib cais ntawm HPMC hauv dej.
Nws yog ib qho tseem ceeb uas yuav tau xaiv cov qib HPMC uas tsim nyog nrog cov kev xav tau solubility siab thiab muaj peev xwm tiv taus kev ntxhua khaub ncaws hnyav.HPMC qib nrog cov kev xav tau siab solubility raug pom zoo rau cov ntxhua khaub ncaws kom ntseeg tau tias cov khoom tawg yooj yim hauv dej thiab muab kev ua haujlwm tu zoo ib yam.Kev siv HPMC nrog cov kev xav tau qis dua solubility tuaj yeem ua rau cov tshuaj ntxuav tes kom clump thiab precipitate hauv dej, txo qhov ua tau zoo ntawm cov khoom.
Kev solubility ntawm HPMC yog qhov tseem ceeb rau nws siv ntau yam kev siv, suav nrog cov ntxhua khaub ncaws.Kev solubility ntawm HPMC hauv dej yog cuam tshuam los ntawm ntau yam, suav nrog pH, kub, thiab concentration.Hauv cov ntxhua khaub ncaws ntxhua khaub ncaws, HPMC nrog cov kev xav tau siab solubility yuav tsum tau siv los xyuas kom meej cov khoom tawg hauv dej.Kev siv HPMC nrog cov kev xav tau qis dua solubility tuaj yeem ua rau cov tshuaj ntxuav tes kom clump thiab precipitate, txo cov txiaj ntsig ntawm cov khoom.Yog li ntawd, nws yog ib qho tsim nyog los xaiv cov qib HPMC uas tsim nyog nrog cov kev xav tau siab solubility rau cov tshuaj ntxhua khaub ncaws kom ntseeg tau tias kev ua haujlwm tu zoo ib yam.
Post lub sij hawm: Sep-18-2023