Hydroxypropyl methylcellulose (HPMC)yog ib qho tseem ceeb cellulose ether nrog ntau yam kev siv, feem ntau yog nyob rau hauv cov teb ntawm kev tsim kho, tshuaj, khoom noj, thiab lwm yam. Raws li ntau txoj kev ua tiav, HPMC tuaj yeem faib ua hom kho saum npoo thiab hom tsis kho.
1. Qhov sib txawv ntawm cov txheej txheem tsim khoom
HPMC tsis tau kho
HPMC uas tsis tau kho tsis tau txais kev kho tshwj xeeb rau saum npoo thaum lub sijhawm tsim khoom, yog li nws cov hydrophilicity thiab solubility tau khaws cia ncaj qha. Hom HPMC no swells sai thiab pib yaj tom qab kov dej, qhia txog kev nce ntxiv sai hauv viscosity.
HPMC kho qhov chaw
HPMC uas kho nto yuav muaj cov txheej txheem txheej ntxiv tom qab tsim khoom. Cov ntaub ntawv kho nto feem ntau yog acetic acid lossis lwm cov tshuaj tshwj xeeb. Los ntawm kev kho no, zaj duab xis hydrophobic yuav tsim rau ntawm qhov chaw ntawm HPMC cov khoom me me. Kev kho no ua rau nws cov txheej txheem yaj qeeb, thiab feem ntau nws yog qhov tsim nyog los ua kom cov yaj los ntawm kev sib xyaw ua ke.
2. Qhov sib txawv ntawm cov khoom yaj tau
Cov yam ntxwv ntawm kev yaj ntawm HPMC tsis tau kho
HPMC uas tsis tau kho yuav pib yaj tam sim ntawd tom qab kov dej, uas yog qhov tsim nyog rau cov xwm txheej uas muaj kev xav tau siab rau qhov ceev ntawm kev yaj. Txawm li cas los xij, vim tias kev yaj sai sai yog qhov yooj yim los ua cov agglomerates, qhov ceev ntawm kev pub mis thiab kev sib xyaw ua ke yuav tsum tau tswj hwm kom zoo dua.
Cov yam ntxwv ntawm kev yaj ntawm HPMC uas kho saum npoo av
Cov txheej txheej ntawm qhov chaw ntawm cov khoom HPMC uas tau kho saum npoo av siv sijhawm los yaj lossis rhuav tshem, yog li lub sijhawm yaj ntev dua, feem ntau yog ob peb feeb txog ntau dua kaum feeb. Tus qauv tsim no zam kev tsim cov agglomerates thiab tshwj xeeb tshaj yog rau cov xwm txheej uas xav tau kev sib xyaw sai lossis cov dej zoo thaum lub sijhawm ntxiv.
3. Qhov sib txawv ntawm cov yam ntxwv viscosity
HPMC uas kho saum npoo yuav tsis tso tawm cov viscosity tam sim ntawd ua ntej yaj, thaum HPMC uas tsis kho yuav ua rau cov viscosity ntawm lub kaw lus nce ntxiv sai sai. Yog li ntawd, thaum cov viscosity yuav tsum tau hloov kho maj mam lossis cov txheej txheem yuav tsum tau tswj hwm, hom kho saum npoo muaj ntau qhov zoo dua.
4. Qhov sib txawv ntawm cov xwm txheej siv tau
HPMC uas tsis tau kho saum npoo
Haum rau cov xwm txheej uas xav tau kev yaj sai thiab muaj txiaj ntsig tam sim ntawd, xws li cov tshuaj pleev xim capsule hauv kev lag luam tshuaj lossis cov khoom ua kom tuab sai hauv kev lag luam zaub mov.
Nws kuj ua tau zoo hauv qee qhov kev tshawb fawb hauv chaw kuaj mob lossis kev tsim khoom me me nrog kev tswj hwm nruj ntawm cov txheej txheem pub mis.
HPMC kho qhov chaw
Nws siv dav hauv kev lag luam kev tsim kho, piv txwv li, hauv cov tshuaj mortar qhuav, cov nplaum pobzeb, cov tshuaj pleev xim thiab lwm yam khoom. Nws yooj yim tawg thiab tsis tsim cov agglomerates, uas yog qhov tshwj xeeb tshaj yog rau cov xwm txheej kev tsim kho tshuab.
Nws kuj tseem siv rau hauv qee cov tshuaj uas xav tau kev tso tawm tas mus li lossis cov khoom noj khoom haus ntxiv uas tswj tus nqi yaj.
5. Qhov sib txawv ntawm tus nqi thiab qhov chaw cia khoom
Tus nqi tsim khoom ntawm HPMC uas kho saum npoo av siab dua li ntawm cov uas tsis kho, uas pom tau los ntawm qhov sib txawv ntawm tus nqi ua lag luam. Tsis tas li ntawd, hom uas kho saum npoo av muaj ib txheej tiv thaiv thiab muaj qhov yuav tsum tau qis dua rau qhov av noo thiab kub ntawm qhov chaw cia khoom, thaum hom uas tsis kho muaj qhov hygroscopic ntau dua thiab xav tau cov xwm txheej khaws cia nruj dua.
6. Lub hauv paus xaiv
Thaum xaiv HPMC, cov neeg siv yuav tsum xav txog cov ntsiab lus hauv qab no raws li cov kev xav tau tshwj xeeb:
Tus nqi ntawm kev yaj puas tseem ceeb?
Cov kev cai rau qhov viscosity growth rate.
Seb cov txheej txheem pub mis thiab sib tov puas yooj yim los tsim cov agglomerates.
Cov txheej txheem kev lag luam ntawm daim ntawv thov lub hom phiaj thiab cov kev cai ua tau zoo kawg ntawm cov khoom.
Kho qhov chaw thiab tsis kho qhov chawHPMCmuaj lawv tus kheej cov yam ntxwv. Qhov qub ua rau yooj yim siv thiab ruaj khov ua haujlwm los ntawm kev hloov pauv tus cwj pwm yaj, thiab nws tsim nyog rau kev tsim khoom lag luam loj; qhov tom kawg khaws cia tus nqi yaj siab thiab nws tsim nyog dua rau kev lag luam tshuaj zoo uas xav tau tus nqi yaj siab. Kev xaiv hom twg yuav tsum tau ua ke nrog qhov xwm txheej thov tshwj xeeb, cov txheej txheem thiab cov peev nyiaj.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-20-2024