HydroxyPropyyl methylcellulose (HPMC) yog cov tshuaj polymer ntau yam hauv ntau yam kev lag luam, suav nrog cov tshuaj, kev tsim kho, tshuaj pleev, tshuaj pleev, tshuaj pleev, tshuaj pleev ib ce. Nws cov khoom ua nws haum rau kev siv ntau yam, xws li ntawm kev ua yeeb yam zoo li cov khoom noj khoom haus kom ua raws li tus neeg sawv cev-tso tawm hauv cov tshuaj.
1. Dememical qauv:
HydroxyPropyyl methylulose yog ib tug derivitive ntawm cellulose, ib qho tshwm sim polymer pom hauv cov nroj tsuag. Nws cov qauv tshuaj muaj cov qauv siv rov ua dua ntawm cov roj hamecose hloov nrog cov methyl thiab hydroxypropropyl.
Cov qib degree hloov pauv (DS) ntawm ob pawg neeg siv methropropyl thiab methoxy pab tau cov khoom ntawm HPMC. Cov nuj nqis DS ntau dua ua rau muaj cov dej hydrophobicity thiab txo cov dej solubility.
2.Praysical yam ntxwv:
Zog: HPMC feem ntau yog ib qho dawb rau cov hmoov dawb-dawb, tsw ntxhiab.
Solubility: Nws yog soluble hauv dej txias, tab sis cov solubility txo qis nrog nce qib hydroxypropyl thiab methoxy hloov ntau.
Viscosity: HPMC cov kev daws teeb meem Pseudoplastic lossis shear-thij-thuav tus cwj pwm, lub ntsiab lus lawv viscosity txo qis nrog nce shear tus nqi. Viscosity tuaj yeem ua kom haum los ntawm kev kho cov polymer cov molecular hnyav thiab siab.
Hydration: HPMC muaj lub peev xwm ua kom muaj peev xwm ua haujlwm siab, ua rau nws muaj txiaj ntsig zoo hauv cov ntawv thov noo noo kev khaws cia, xws li hauv cov ntaub ntawv tsim kho.
3.thermal thaj chaw:
HPMC cov khoom pov thawj kev ruaj khov thermal stability hla ntau qhov ntau ntau, feem ntau decomposing ntawm qhov kub thiab txias saum toj no 200 ° C.
Nws cov kev coj ua thermal tuaj yeem cuam tshuam los ntawm cov lus xws li qib deg ntawm kev hloov chaw, loj me me, thiab muaj lwm yam kev sib ntxiv.
4.Mhane Khoom:
Hauv cov ntaub ntawv dosage
Nws cov khoom ua yeeb yaj kiab ua yeeb yaj kiab ua rau nws haum rau cov ntsiav tshuaj txhim kho kom muaj kev nqos, npog qab zib, thiab tswj cov tshuaj tso tawm.
5.Rheological yam ntxwv:
HPMC cov kev daws teeb meem tsis yog-Newtonian tus cwj pwm, qhov twg viscosity hloov nrog kev siv kev ntxhov siab lossis tus nqi shear.
Lub zog rheological ntawm HPMC tseem ceeb heev nyob rau hauv cov ntawv thov xws li cov nplaum, uas nws ua raws li cov tuab thiab muaj cov dej ntws tawm.
6.Film-kev tsim cov khoom:
HPMC tuaj yeem sau hloov pauv tau yooj yim, pob tshab cov yeeb yaj kiab thaum nrum los ntawm kev daws teeb meem. Cov yeeb yaj kiab no pom cov ntawv thov rau cov ntsiav tshuaj, granules, thiab cov khoom noj.
Zaj duab xis xws li tensile lub zog, yoog raws, thiab dej noo kev sib thooj tuaj yeem raug txiav los ntawm kev kho kom haum thiab tsim cov qauv sib xyaw.
7.Txhua tseg:
Ib qho ntawm cov khoom tseem ceeb ntawm HPMC yog nws lub peev xwm los khaws dej. Cov cuab yeej no tau siv nyob rau hauv ntau yam kev siv, suav nrog cov khoom lag luam nplaum, cov khoom siv gypsum, uas nws pab ua haujlwm kom muaj zog thiab dej ntawm cov khoom.
8.Thib thiab loj hlob:
HPMC ua raws li tus neeg sawv cev tuab hauv cov kev daws teeb meem aqueous, imparting viscosity thiab txhim kho kev ntxhib los mos hauv cov khoom xws li cov kua zaub, thiab cov tshuaj pleev ib ce.
Hauv qee qhov tsim qauv, HPMC tuaj yeem tsim cov gels rau txheej, muab cov qauv thiab ruaj ntseg rau cov khoom kawg.
9. Instustained Tso Tawm:
Hauv cov yeeb yaj kiab kws tshuaj, HPMC tau siv dav ua ib qho kev sib txuam ntawm kev tswj hwm cov ntaub ntawv.
Nws lub peev xwm rau hydrate thiab tsim cov txheej gel pab tswj cov tshuaj tso tawm, tso cai rau kev xa tshuaj ntxiv thiab txhim kho tus neeg mob ua raws.
10.patibility thiab stability:
HPMC tau tshaj li ntau yam ntawm lwm yam kev zam thiab ntxiv siv hauv cov tshuaj thiab cov khoom noj khoom haus.
Nws ua kom pom kev ruaj khov nyob rau hauv cov chaw khaws cia, muaj kev pheej hmoo tsawg ntawm kev txwv tsis pub muaj tshuaj lom neeg lossis cuam tshuam nrog lwm cov.
11.Bookompatibility:
HPMC yog feem ntau suav tias yog kev nyab xeeb (gras) rau kev siv hauv cov khoom noj thiab cov ntaub ntawv thov tshuaj.
Nws tsis yog-toxic, tsis-irritating, thiab biodegradable, ua rau nws haum rau ntau cov qauv zoo nkauj thiab qhov ncauj.
12.environmental cuam tshuam:
HPMC yog muab tau los ntawm cov khoom siv txuas ntxiv dua tshiab, cov ntoo ntoo txuas ntxiv, ua kom muaj suab paj rwb zoo sib piv rau qee cov hluavtaws polymers.
Nws cov biodegradity ntxiv txo nws ib puag ncig hneev, tshwj xeeb tshaj yog hauv kev siv cov khoom siv pov tseg.
HydroxyPropyyl methylcellose (HPMC) muaj cov khoom siv rau lub cev, tshuaj lom neeg, thiab ua haujlwm zoo uas ua rau nws tsis tseem ceeb hauv cov ntawv thov muaj ntau yam. Nws cov versatility, biocompatibility, thiab ib puag ncig sustainability pab nws thoob plaws siv thoob plaws ntau yam thiab khoom noj khoom siv thiab cov tshuaj pleev ib ce. Raws li kev tshawb nrhiav thiab thev naus laus zis txuas ntxiv mus ua ntej, HPMC yog yuav nyob twj ywm rau cov khoom lag luam tshiab sib ntsib thiab kev tswj hwm cov neeg tau txais kev pab.
Lub Sijhawm Post: Feb-18-2025