▲HydroxyPropylropy Cellulose (HPMC)yog ntxhiab tsw ntxhiab, tsis muaj qab hau, tsis muaj tshuaj pleev xim dawb. Tom qab tag nrho cov dej hauv dej, hydroxypropyl methyl cellulose yuav tsim lub pob tshab viscous colloid.
▲ cov ntaub ntawv tseem ceeb ntawm hydroxypropyl cellulose (HPMC): Kev ua kom zoo nkauj, cov kua txiv me, acid, isopropanol, thiab lwm yam.
Kev sib piv ntawm qhov zoo thiab qhov tsis zoo ntawm hydroxypropyl methylropyl cellulose:
1.Pauv HydroxyPropy Cellulose HPMC yog xoob pom thiab muaj ib qho ntom ntom ntom ntom, nrog ib qho ntsuas ntawm 0.3- ml.
Tus deev luag poj niam HPMC muaj cov zoo nkauj heev thiab hnov cov khoom uas hnyav dua, uas yog txawv ntawm cov khoom lag luam tiag tiag hauv tsos.
2.Piab HydreboxyPropylropy Cellulose HPMC queous kev daws teeb meem yog qhov tseeb, ua kom muaj kev hloov pauv, dej khaws cia> 97%.
Cov lus qhuab qhia HPMC yog qhov tsis tshua muaj qias neeg, thiab cov dej khaws cia yog qhov nyuaj kom ncav cuag 80%.
3.Pure HPMC yuav tsum tsis hnov tsw ntawm ammonia, cov hmoov txhuv nplej siab thiab cawv.
Adulterated HPMC feem ntau tuaj yeem hnov ntxhiab txhua yam flavors, txawm hais tias nws yog tasteless, nws yuav hnov hnyav.
4.PECE HydroxyPropy Cellulose HPMC Hmoov yog fibrous nyob rau hauv lub tsom iav lossis lub khob loj.
Adulterated HPMC tuaj yeem pom tias yog cov khib nyiab los yog muaju hauv qab lub tshuab tsom lossis lub khob loj dua.
Los ntawm cov yam ntxwv los txheeb xyuas qhov zoo thiab qhov tsis zoo ntawm hydroxypropyl methyl cellulose?
1.White degree
Txawm hais tias dawb tsis tuaj yeem txiav txim siab seb HPMC yooj yim siv, thiab yog cov neeg sawv cev kom huv, nws yuav cuam tshuam nws cov kev zoo. Txawm li cas los xij, feem ntau ntawm cov khoom lag luam zoo muaj zoo dawb.
2.Fineness
Lub txiaj ntsig ntawm HPMC feem ntau muaj 80 mesh thiab 100 mesh, thiab finer fineness, feem ntau hais lus, feem ntau hais lus, zoo dua qub.
3.Transcartance
TsoHydroxyPropylropy Cellulose (HPMC)mus rau hauv dej los ua ib tug pob tshab colloid, thiab xyuas nws cov kev hloov pauv pom. Lub siab dua lub teeb kev hloov pauv, qhov zoo dua, qhia tias muaj tsawg insoluble cov tshuaj hauv nws. Lub permeability ntawm cov neeg ntsug ntawm cov reactors feem ntau yog qhov zoo, thaum lub kab rov tav reactors yog qhov phem dua.
4.Propport
Qhov loj dua cov kev nqus tshwj xeeb, qhov hnyav dua qhov zoo dua. Qhov tshwj xeeb yog qhov loj, feem ntau vim tias cov ntsiab lus ntawm hydroxypropyl group hauv nws yog siab, thiab cov ntsiab lus ntawm hydroxyproproutyl yog qhov siab, cov dej khaws cia zoo dua.
Lub Sijhawm Post: Apr-25-2024