HydroxyPropyyl Methylcellulose (HPMC)yog lub cellulose tseem ceeb ether nrog ntau cov ntawv thov, tshuaj, khoom noj, thiab lwm yam. Raws li cov hom sib txawv thiab tsis kho.
1. Qhov sib txawv hauv cov txheej txheem ntau lawm
Tsis kho hpmc
Kev tsis kho HPMC tsis yauv tshwj xeeb cov txheej txheem kev kho mob tshwj xeeb thaum muaj cov txheej txheem ntau lawm, yog li nws cov solubility yog tuav ncaj qha. Hom HPMC no sai sai thiab pib yaj tom qab kev sib cuag nrog dej, uas qhia kom muaj kev nce nrawm nrawm.
Deg-kho HPMC
Deg-kho HPMC yuav muaj cov txheej txheem txheej ntxiv ntxiv tom qab kev tsim khoom. Cov ntaub ntawv kho cov khoom ntawm cov khoom siv yog acetic acid lossis lwm cov lus teb tshwj xeeb. Los ntawm kev kho mob no, ib zaj duab xis hydrophobic yuav tsim nyob rau ntawm HPMC hais. Txoj kev kho mob no qeeb qeeb nws cov txheej txheem kev cais tawm, thiab feem ntau yuav tsum ua kom muaj kev sib cais los ntawm kev sib tsoo.
2. Qhov sib txawv ntawm cov khoom siv solubility
Kev sib cais ntawm cov yam ntxwv ntawm tsis kho HPMC
Kev tsis kho HPMC yuav pib yaj tam sim ntawd tom qab sib cuag nrog dej, uas haum rau cov xwm txheej, uas haum rau cov kev xav tau ntawm kev ua kom ceev. Txawm li cas los xij, txij li kev sib cais nrawm yog nquag los ua cov agglomerates, cov khoom noj kom ceev thiab nplawm yuav tsum tau tswj hwm kom zoo dua.
Kev sib cais ntawm cov npoo-kho HPMC
Cov txheej ntawm cov npoo ntawm HPMC hais siv sijhawm los yaj los rhuav tshem, yog li lub sijhawm sib cais ntev dua, feem ntau yog ntau feeb ntev dua li kaum feeb. Cov qauv tsim no zam cov kev tsim ntawm agglomerates thiab yog tsim tshwj xeeb rau scenes uas xav tau loj-ntsuas dej zoo thaum lub sijhawm ntxiv.
3. Qhov sib txawv hauv cov hom phiaj viscosity
Deg-kho HPMC yuav tsis tso tawm viscosity tam sim ntawd ua ntej kev sib nrauj, thaum tsis kho HPMC yuav sai sai ua kom cov viscosity ntawm lub system. Yog li ntawd, nyob rau hauv cov neeg muaj mob viscosity yuav tsum tau hloov kho lossis cov txheej txheem yuav tsum tau tswj hwm, cov khoom qub muaj ntau yam zoo dua.
4. Qhov sib txawv hauv cov xwm txheej siv tau
Unsurface-kho HPMC
Haum rau scenes uas yuav tsum tau ua kom nrawm dua thiab cov nyhuv tam sim ntawd, xws li cov tshuaj ntsiav tam sim, xws li cov tshuaj tiv thaiv kab mob hauv cov chaw ua haujlwm lossis cov thickeners sai sai hauv kev lag luam khoom noj.
Nws tseem ua tau zoo hauv qee qhov chaw kuaj kab ke lossis cov txheej txheem me me nrog kev tswj nruj ntawm kev noj ua ntu zus.
Deg-kho HPMC
Nws yog dav siv nyob rau hauv kev tsim kho kev tsim kho, piv txwv li cov tshuaj khib qhuav, pobzeb nplaum, txheej thiab lwm yam khoom. Nws yog ib qho yooj yim rau disperse thiab tsis ua polglomberates, uas yog tshwj xeeb rau kev siv tshuab kev tsim kho.
Nws tseem siv nyob rau hauv qee yam kev npaj ua tshuaj uas xav tau kev tso tawm lossis cov khoom noj khoom haus cov zaub mov uas tswj tau tus lej xaus.
5. Nqe thiab Cia Sib Txawv
Kev siv ntau lawm ntawm cov nplaim-kho hpmc yog siab dua li qhov uas tsis kho, uas tau cuam tshuam hauv qhov sib txawv hauv cov nqe lag luam. Tsis tas li ntawd, cov hom qauv qub muaj cov txheej tiv thaiv thiab muaj qhov qis dua rau cov khoom noo thiab kub thiab ntsuas kom muaj kev cia siab ntau.
6. Xaiv lub hauv paus
Thaum xaiv HPMC, cov neeg siv yuav tsum xav txog cov ntsiab lus hauv qab no raws li cov kev xav tau:
Puas yog qhov kev sib cais dhau los?
Yuav tsum muaj rau viscosity kev loj hlob tus nqi.
Txawm hais tias cov pub mis thiab kev sib xyaw yog qhov yooj yim ua kom muaj agglomerates.
Cov txheej txheem muaj ntawm cov ntawv thov phiaj thiab qhov yuav tsum tau ua tiav ntawm cov khoom.
Cov npoo-kho thiab cov npoo tsis zooHPMCmuaj lawv tus kheej cov yam ntxwv. Lub qub txhim kho qhov yooj yim ntawm kev siv thiab ua hauj lwm ruaj khov los ntawm kev hloov tus cwj pwm sib txawv, thiab haum rau kev tsim khoom loj; Lub tom kawg pab tau ib tug lej siab thiab yog tsim nyog rau kev lag luam tshuaj zoo uas yuav tsum muaj siab kawg cov kev lag luam. Qhov kev xaiv ntawm hom twg yuav tsum tau ua ke nrog cov xwm txheej kev thov tshwj xeeb, cov txheej txheem cov txheej txheem thiab nyiaj txiag.
Sijhawm Sijhawm: NOV-20-2024