HPMC (HydroxyPropylsylcelylulose) yog lub cellulose derivative siv los ua phau ntawv, tuab thiab emulsifier hauv ntau yam kev lag luam. Nws tseem siv los ua kev zam hauv cov tshuaj. HPMC yog dej-soluble, cov khoom siv polymer uas nws muaj peev xwm ua kom haum raws li cov qib ntawm hydroxyprropoxy thiab methoxy pawg.
Kev tsim HPMC muaj feem cuam tshuam rau lub etherification ntawm cellulose nrog methyl chloride thiab propylene oxide. Cov qib ntawm methoxy thiab hydroxyPropEXY hloov tuaj yeem tswj tau thaum lub sijhawm tsim khoom, cuam tshuam rau cov khoom kawg ntawm cov khoom.
Ib qho khoom tseem ceeb ntawm HPMC yog nws lub peev xwm los ua cov gels. HPMC cov kua nplaum tau siv dav hauv kev lag luam khoom noj raws li cov thickenters thiab stabilizers. Lawv kuj tau siv raws li kev tso tawm cov neeg sawv cev hauv cov tshuaj kom tswj tau tus nqi ntawm cov tshuaj no tso tawm. Cov khoom lag luam gel ntawm HPMC tuaj yeem hloov pauv los ntawm kev kho cov qib ntawm hydroxyprropoxy thiab methoxy pawg.
Lwm cov cuab yeej tseem ceeb ntawm HPMC yog nws solubility. HPMC yog yooj yim soluble hauv dej, ua rau nws muaj ib qho zoo tshaj plaws ntawm cov chaw muag tshuaj. Nws yog sib xws nrog ntau lwm yam kev zam uas siv hauv kev lag luam kws tshuaj, tso cai rau kev tsim cov tshuaj yooj yim.
HPMC kuj tseem siv rau hauv kev tsim kho kev tsim kho ua ib phau ntawv sib txuas thiab cov tuab tuab hauv cov khoom noj khoom haus caas. Ntxiv HPMC mus rau txoj kev sib xyaw ua keasas ua rau nws cov haujlwm ua haujlwm thiab txo cov shrinkage thiab tawg. Nws tseem txhim kho cov khoom siv dej ntawm cov xis nyob ua ke, Li qub kev txhim kho lub sijhawm thiab lub zog tag nrho ntawm cov khoom kho tau zoo.
Hauv kev lag luam kev saib xyuas ntawm tus kheej, HPMC yog siv los ua cov tuab thiab ruaj khov hauv cov tshuaj pleev ib ce thiab cov khoom saib xyuas tus kheej. Nws lub peev xwm los ua cov gel zoo li cov qauv gel ua rau nws muaj kev siv tshuaj kom ruaj khov thiab txhim kho cov qauv ntawm creams thiab potions.
HPMC yog cov khoom siv ntau ntau nrog ntau cov kev siv hauv kev lag luam ntau yam. Nws cov cuab yeej tuaj yeem raug tsim kho kom haum los ntawm kev kho cov qib ntawm hydroxyprropoxy thiab methoxy pawg. Nws yog qhov yooj yim soluble hauv dej, ua rau nws muaj ib qho zoo tshaj plaws tshuaj siv khoom. Nws lub peev xwm los ua cov roj pleev ua rau nws muaj txiaj ntsig zoo li cov tuab thiab muaj stabilizer hauv cov zaub mov, kev tu tus kheej thiab kev tsim kho kev lag luam thiab kev tsim kho. Ntxiv HPMC rau txoj kev sib xyaw ua ke. Zuag qhia tag nrho, HPMC yog cov khoom muaj txiaj ntsig uas txuas ntxiv mus nrhiav cov ntawv thov tshiab hauv ntau yam kev lag luam, txhim kho cov khoom lag luam zoo thiab cov txheej txheem.
Lub Sijhawm Post: Feb-19-2025