Hauv kev lag luam tshuaj, sodium carboxymethylcellulose (CMC) thiab hydroxypropyl methylcellulose (HPMC) yog ob qho tshuaj siv feem ntau nrog cov khoom siv tshuaj thiab kev ua haujlwm sib txawv.
Cov qauv tshuaj lom neeg thiab cov khoom
CMC yog ib qho cellulose derivative uas tau los ntawm kev hloov ib feem ntawm cov hydroxyl pawg ntawm cellulose mus rau hauv carboxymethyl pawg. Qhov solubility thiab viscosity ntawm CMC nyob ntawm nws qib kev hloov pauv thiab qhov hnyav molecular, thiab nws feem ntau ua raws li tus neeg sawv cev zoo thiab tus neeg sawv cev suspending.
HPMC tau los ntawm kev hloov ib feem ntawm cov hydroxyl pawg ntawm cellulose nrog methyl thiab hydroxypropyl pawg. Piv nrog CMC, HPMC muaj solubility dav dua, tuaj yeem yaj hauv dej txias thiab dej kub, thiab ua kom pom tseeb viscosity ruaj khov ntawm cov nqi pH sib txawv. HPMC feem ntau siv ua tus thawj zaj duab xis, nplaum, thickener thiab tswj kev tso tawm tus neeg sawv cev hauv tshuaj.
Daim ntawv thov teb
Cov ntsiav tshuaj
Hauv kev tsim cov ntsiav tshuaj, CMC feem ntau yog siv los ua cov khoom tawg thiab cov nplaum. Ua ib qho khoom tawg, CMC tuaj yeem nqus dej thiab o, yog li ua rau cov ntsiav tshuaj tawg thiab ua rau cov tshuaj tso tawm ntau dua. Ua ib qho khoom khi, CMC tuaj yeem txhim kho lub zog ntawm cov ntsiav tshuaj.
HPMC feem ntau yog siv ua tus neeg ua zaj duab xis thiab tus neeg sawv cev tso tawm hauv cov ntsiav tshuaj. Zaj duab xis uas tsim los ntawm HPMC muaj lub zog zoo heev thiab kev tiv thaiv kev hnav, uas tuaj yeem tiv thaiv cov tshuaj los ntawm kev cuam tshuam ntawm ib puag ncig sab nraud. Tib lub sijhawm, cov khoom tsim zaj duab xis ntawm HPMC kuj tseem siv tau los tswj qhov kev tso tawm ntawm cov tshuaj. Los ntawm kev kho hom thiab koob tshuaj ntawm HPMC, kev tso tawm mus tas li lossis kev tso tawm tswj tau tuaj yeem ua tiav.
Cov tshuaj ntsiav
Hauv kev npaj tshuaj ntsiav, CMC siv tsawg dua, thaum HPMC siv dav, tshwj xeeb tshaj yog hauv kev tsim cov tshuaj ntsiav tsis noj nqaij. Cov plhaub tshuaj ntsiav ib txwm muaj feem ntau yog ua los ntawm gelatin, tab sis vim muaj teeb meem ntawm cov tsiaj txhu, HPMC tau dhau los ua lwm yam khoom siv zoo tagnrho. Lub plhaub tshuaj ntsiav ua los ntawm HPMC tsis yog tsuas yog muaj kev sib raug zoo zoo xwb, tab sis kuj ua tau raws li qhov xav tau ntawm cov neeg tsis noj nqaij.
Cov tshuaj ua kua
Vim nws cov khoom ua kom tuab thiab ua kom ncua tau zoo heev, CMC siv dav hauv cov kua tshuaj xws li cov tshuaj haus, cov tshuaj qhov muag thiab cov tshuaj pleev. CMC tuaj yeem ua rau cov kua tshuaj viscosity nce ntxiv, yog li txhim kho kev ncua thiab kev ruaj khov ntawm cov tshuaj thiab tiv thaiv cov tshuaj kom tsis txhob poob.
Kev siv HPMC hauv kev npaj kua feem ntau yog tsom mus rau cov thickeners thiab emulsifiers. HPMC tuaj yeem ruaj khov ntawm ntau yam pH thiab tuaj yeem sib xws nrog ntau yam tshuaj yam tsis cuam tshuam rau qhov ua tau zoo ntawm cov tshuaj. Tsis tas li ntawd, cov khoom tsim zaj duab xis ntawm HPMC kuj tseem siv rau hauv kev npaj tshuaj pleev, xws li cov nyhuv tiv thaiv zaj duab xis hauv cov tshuaj qhov muag.
Kev npaj tso tawm uas tswj tau
Hauv kev npaj tso tawm tshuaj uas tswj tau, kev siv HPMC yog qhov tshwj xeeb tshaj yog. HPMC muaj peev xwm tsim tau ib lub network gel, thiab qhov nrawm ntawm kev tso tawm tshuaj tuaj yeem tswj tau los ntawm kev kho qhov concentration thiab cov qauv ntawm HPMC. Cov khoom no tau siv dav hauv cov ntsiav tshuaj thiab cov khoom cog uas tso tawm ntev. Qhov sib txawv, CMC tsis tshua siv hauv kev npaj tso tawm tshuaj, feem ntau vim tias cov qauv gel uas nws tsim tsis ruaj khov li HPMC.
Kev ruaj khov thiab kev sib raug zoo
CMC tsis ruaj khov ntawm cov nqi pH sib txawv thiab yooj yim cuam tshuam los ntawm cov kua qaub-raws li ib puag ncig. Tsis tas li ntawd, CMC tsis sib xws nrog qee cov khoom xyaw tshuaj, uas yuav ua rau cov tshuaj los nag lossis ua tsis tiav.
HPMC qhia tau tias nws ruaj khov zoo thoob plaws ntau yam pH, tsis yooj yim cuam tshuam los ntawm cov kua qaub-puag, thiab muaj kev sib raug zoo heev. HPMC tuaj yeem sib xws nrog feem ntau cov khoom xyaw tshuaj yam tsis cuam tshuam rau kev ruaj khov thiab kev ua haujlwm ntawm cov tshuaj.
Kev nyab xeeb thiab cov cai
Ob qho tib si CMC thiab HPMC raug suav hais tias yog cov tshuaj siv kho mob muaj kev nyab xeeb thiab tau txais kev pom zoo rau kev siv hauv kev npaj tshuaj los ntawm pharmacopoeias thiab cov koom haum tswj hwm hauv ntau lub tebchaws. Txawm li cas los xij, thaum siv, CMC yuav ua rau muaj qee qhov kev tsis haum tshuaj lossis mob plab hnyuv, thaum HPMC tsis tshua muaj kev tsis haum tshuaj.
CMC thiab HPMC muaj lawv tus kheej qhov zoo hauv kev siv tshuaj. CMC nyob hauv txoj haujlwm tseem ceeb hauv kev npaj kua vim nws cov khoom zoo heev rau kev ua kom tuab thiab kev ncua, thaum HPMC tau siv dav hauv cov ntsiav tshuaj, tshuaj ntsiav thiab kev npaj tswj-tso tawm vim nws cov khoom zoo heev rau kev tsim zaj duab xis thiab kev tswj-tso tawm. Kev xaiv cov tshuaj npaj yuav tsum ua raws li cov khoom tshwj xeeb ntawm cov tshuaj thiab cov kev xav tau ntawm kev npaj, xav txog qhov zoo thiab qhov tsis zoo ntawm ob qho tib si, thiab xaiv cov khoom siv tsim nyog tshaj plaws.
Lub sijhawm tshaj tawm: Lub Xya Hli-19-2024