HydroxyPropyyl methylcellose (HPMC) tau siv cov tshuaj ntxhua khaub ncaws ua vim nws cov tuab heev, dej tuav thiab pov cov khoom pov thawj. HPMC yog cov khoom siv hluavtaws ua rau ntawm cellulose, lub ntuj polymer pom hauv cov nroj tsuag. HPMC yog dej-soluble polymer nrog ntau cov ntawv thov hauv kev lag luam thiab kev tsim khoom. Hauv cov khaub ncaws tshuaj tua ntxhua khaub ncaws, hpmc yog siv los txhim kho kev tu tag nrho kev ua haujlwm ntawm cov khoom.
HPMC yog ib qho khoom siv soluble heev. Lub solubility ntawm HPMC nyob ntawm ntau yam, suav nrog nws txoj kev hnyav molecular, degree hloov chaw, thiab kub. Feem ntau, HPMC cov khoom pov thawj siab rau cov solubility siab hauv dej thiab cov kuab roj polar. HPMC muaj cov roj ntsha hnyav ntau ntawm 10,000 rau 1,000,000 da thiab feem ntau muaj cov solubility hauv dej ntawm 1% rau 5%, nyob ntawm qib thiab siab. Lub solubility ntawm HPMC hauv dej cuam tshuam los ntawm ntau yam xws li pH, kub thiab muaj kev kub ntxhov.
Hauv kev ntxhua khaub ncaws tshuaj, HPMC nrog kev ua solubility siab yuav tsum tau siv los xyuas kom muaj kev xab npum kom raug rau hauv dej. Lub solubility ntawm HPMC hauv cov tshuaj tua ntxhua khaub ncaws tab sis cuam tshuam los ntawm ntau yam khoom xyaw, qhov kub ntawm kev ntxhua khaub ncaws thiab lub hardness ntawm cov dej. Dej hardness cuam tshuam rau solubility ntawm HPMC vim muaj cov minerals uas yaj, xws li calcium thiab magnesium, cuam tshuam nrog kev sib cais ntawm HPMC hauv dej.
Nws yog qhov tseem ceeb los xaiv cov qib HPMC uas tsim nyog nrog kev ua solubility siab thiab muaj peev xwm tiv thaiv kev ua kom tawg. Yuav tsum muaj kev ntxhua khaub ncaws HPMC uas muaj kev tua ntxhua khaub ncaws kom ntseeg tau tias cov khoom dissolves nkag rau hauv dej thiab muab cov khoom siv tu kom huv. Siv HPMC nrog qis solubility yuav tsum ua rau cov xab npum rau pob txha thiab daus rau hauv dej, txo qhov ua tau zoo ntawm cov khoom.
Lub solubility ntawm HPMC yog qhov tseem ceeb rau nws siv nyob rau ntau cov ntawv thov, suav nrog tshuaj ntxuav tej khaub ncaws. Kev Solubility ntawm HPMC hauv dej cuam tshuam los ntawm ntau yam, suav nrog Ph, Kub, thiab siab. Hauv kev ntxhua khaub ncaws tshuaj noj, HPMC nrog kev ua solubility siab yuav tsum raug siv los xyuas kom muaj kev txiav txim zoo ntawm cov khoom hauv dej. Siv hpmc nrog kev ua solubycility qis yuav ua rau cov tshuaj ntxuav tes rau hauv cov khoom lag luam thiab daus cov khoom. Yog li ntawd, nws yog qhov tsim nyog los xaiv HPMC cov qhab nia nrog kev ua haujlwm siab rau cov tshuaj tua ntxhua khaub ncaws kom ntseeg tau tias kev ua yeeb yam zoo ib yam nkaus.
Lub sijhawm Post: Sep-18-2023