HydroxyPropyyl methylcellulose (HPMC)yog cov dej tsis-ionic-soluble cellulose cellulose derivative, uas yog siv tshuaj hloov los ntawm ntuj cog cellulose. Nws cov qauv muaj methyl thiab hydroxypropropyl pawg, uas ua rau nws muaj cov dej solubility zoo, thickening, ruaj khov thiab zaj duab xis tsim cov khoom. Vim yog cov khoom tshwj xeeb no, HPMC tau dav siv nyob rau hauv ntau yam teb, ntawm nws daim ntawv thov hauv cov xab npum kuj tseem yog ib qho tseem ceeb heev.
1. Thickeners thiab viscosity regulators
Hauv cov tshuaj ntxuav, ib qho ntawm cov haujlwm tseem ceeb ntawm HPMC yog qhov tuab dua. Nws tuaj yeem ua kom cov viscosity ntawm cov tshuaj ntxuav, txhim kho lawv cov kev siv thiab kev ua tau zoo. Rau cov tshuaj ntxuav ua kua, tshwj xeeb tshaj yog cov tshuaj ntxuav kom tswj tau cov tshuaj ntxuav kom tswj tau cov tshuaj ntxuav kom huv, ua rau nws ruaj khov nyob rau thaum lub raj mis. Ib qho ntxiv, cov viscosity tsim nyog tseem pab txo cov xab npum thiab txhim kho nws cov khoom nplaum, yog li ua cov kev ntxhua khaub ncaws ntau dua.
2. Txhim kho qhov ruaj khov ntawm surfactants
Xab feem ntau muaj surfactants, thiab kev ua tau zoo ntawm cov surfactants tuaj yeem cuam tshuam los ntawm ib puag ncig cov ntsiab lus (xws li qhov kub thiab txias, pH, thiab lwm yam). Raws li cov tuab thiab xaws, HPMC tuaj yeem txhim kho kev ua haujlwm ntawm cov tshuaj tua kab mob los ntawm kev kho cov kab mob viscosity thiab txhim kho lub viscosity thiab kev ruaj khov ntawm surfactants. Nws pab txo cov nqi ua npuas dej dissipation thiab tswj cov txheej txheem xab npum ua npuas dej, tshwj xeeb tshaj yog thaum ua npuas ncauj yuav tsum muaj nyob ntev.
3. Txhim kho cov nyhuv tu
Cov nplaum ntawm HPMC tso cai rau cov khoom xyaw nquag ua cov xab npum kom zoo dua rau cov chaw lossis cov ntaub ua tiav, txhim kho cov nyhuv tu. Tshwj xeeb tshaj yog nyob rau hauv cov tshuaj ntxuav, HPMC pab txhim kho cov kev sib cais ntawm cov av hais nrog dej, tso cai rau lawv kom muab tshem tawm kom zoo dua. Tsis tas li ntawd, HPMC tseem tuaj yeem txhim kho kev ua kom huv los ntawm kev ua kom qeeb qeeb ntawm cov xab npum kom nws tseem nyob hauv kev sib cuag kom ntev dua.
4. Txhim kho cov tawv nqaij-phooj ywg ntawm cov xab npum
Raws li ib qho khoom siv tau muab cov khoom siv tau zoo, HPMC muaj cov khoom zoo biocompatibility thiab cov khoom me. Ntxiv HPMC rau xab npum tuaj yeem txhim kho kev mob me ntawm cov tawv nqaij sib chwv thiab txo cov tawv nqaij khaus. Tshwj xeeb tshaj yog rau cov khoom noj me me lossis tshuaj ntxuav cov tawv nqaij tsim rau cov tawv nqaij rhiab, ua kom cov xab npum kom haum rau kev siv hauv cov xwm txheej uas nws muaj kev sib cuag nrog cov tawv nqaij ntev.
5. MAJ CRASTION THIAB KEV TIV THAIV
HPMCmuaj kev lom zem ua yeeb yaj kiab. Hauv cov khoom siv xab npum, HPMC tuaj yeem ua ib zaj duab xis thaum lub sijhawm ntxuav kom muaj kev tiv thaiv ntxiv. Piv txwv li, hauv qee cov tshuaj ntxuav ntxhua khaub ncaws, hpmc zaj duab xis tuaj yeem pab tiv thaiv cov ntaub ntawm kev sib txhuam los ntawm kev sib txhuam ntau dhau los yog kev puas tsuaj, yog li txuas ntxiv rau lub neej.
6. Txhim kho qhov hnov ntawm xab npum
Vim nws cov thickening thiab emulsifying zog, HPMC tuaj yeem txhim kho qhov kev xav ntawm xab npum, ua rau lawv smoother thiab yooj yim dua thov. Piv txwv li, hauv cov tshuaj ntxuav kom huv siv los ua chav ua noj kom huv lossis cov chav dej, HPMC tso cai rau lub sijhawm ntev dua, tso cai rau kev tshem tawm ntawm cov av uas tsis muaj kev khiav tawm yooj yim.
7. Raws li tus neeg sawv cev tso tawm
Hauv qee cov khoom xab tshuaj ntxuav tshwj xeeb, HPMC kuj tseem siv tau ua tus neeg sawv cev-tso tawm. Vim tias HPMC yws qeeb, nws tuaj yeem ncua lub sijhawm tso tawm hauv cov khoom siv ua kom nquag plias tuaj yeem ua haujlwm ntev, yog li txhim kho cov txiaj ntsig ntxuav tau.
8. Kev tiv thaiv ib puag ncig thiab kev ruaj khov
Raws li cov duab polymer tau los ntawm cov nroj tsuag ntuj tsim, HPMC muaj qee qhov zoo hauv kev tiv thaiv ib puag ncig. Piv nrog qee cov roj av roj av hluav taws xob hluavtaws, HPMC zoo dua nyob rau hauv dej thiab yuav tsis ua rau ib puag ncig lub cev. Nrog kev nce qib ntawm ntsuab thiab ib puag ncig cov ntsiab lus, ntau cov khoom siv xab npum tau pib siv cov ntaub ntawv ntau thiab biodegradadable thiab biodegradable cov ntaub ntawv. HPMC tau dhau los ua kev xaiv zoo tshaj plaws vim tias nws zoo biodegradity.
Daim ntawv thov ntawmHydroxyPropyyl MethylcelluloseHauv cov tshuaj ntxuav tes yog qhov tseem ceeb ntawm ntau yam xws li thickening, txhim kho kev ua kom huv, zaj duab xis, txhim kho thiab kov cov kev tso tawm thiab txhawb nqa kev sib raug. Nws cov vagatility ua rau nws siv cov khoom noj niaj hnub ua kua, ntxuav cov tshuaj ntxuav tu cov tshuaj ntxuav kom huv, kev saib xyuas tawv nqaij thiab lwm yam khoom. Raws li cov neeg siv khoom 'xav tau rau ib puag ncig tus phooj ywg thiab kev ntxuav kom nce ntxiv, muaj kev txhawb nqa kom loj, muaj kev lag luam hauv cov kev lag luam yav tom ntej.
Lub Sijhawm Post: Dec-11-2024