HydroxyPropyyl methylcellulose (HPMC)yog dej-soluble polymer dav siv nyob rau hauv cov ntaub ntawv hauv tsev, kws tshuaj, khoom noj thiab tshuaj lom neeg. HPMC muaj cov dej ua kom zoo, ua kom cov dej ua kom zoo, ua yeeb yaj kiab ua yeeb yaj kiab thiab yog ib qho tshwj xeeb hauv cov khoom noj thiab cov khoom siv gypsum. Txheej txheem sib cais ntawm Kimacell® Tus neeg muaj kev cuam tshuam los ntawm ntau yam kev tsim kho yog qhov kev tsim kho thiab qhov kawg ntawm culture, putty thiab lwm yam khoom. Yog li ntawd, kawm cov hydration ncua cov yam ntxwv ntawm HPMC yog qhov tseem ceeb tseem ceeb rau kev txhim kho cov khoom siv.
1. HPMC Hydration Mechanism
Kev sib cais ntawm HPMC hauv dej koom nrog plaub theem: ntub ntub, particle dispersion, o thiab o thiab xaus. Thaum cov pa HPMC raug nyob ncaj qha rau dej, txheej txheej saum npoo av yuav ua cov dej gel, uas yog li qhia txog kev ua kom dej qeeb qeeb. Txhawm rau txhim kho kev ua haujlwm, qee cov khoom lag luam HPMC tshwj xeeb, xws li kev kho kom zoo thiab txhim kho lub sijhawm qhib thiab kev ua haujlwm thaum lub sijhawm kev tsim kho.
Qhov tseem ceeb rau kev ncua hydration ncua suav nrog:
Kev faib tawm loj me me me faib: Tshaj tawm ntau dua qeeb dua li cov khoom me me, thiab cov hydration ncua sijhawm ntev dua.
Cov kev kho deg: Qee HPMCS yog hla-txuas lossis hydrophobically coated, uas tuaj yeem ncua hydration.
Kev daws qhov kub: muaj qhov kub nyob ntxiv tuaj yeem nrawm dua ntawm HPMC, tab sis nws kuj tseem cuam tshuam rau cov hydration ncua cov yam ntxwv ncua nyob rau hauv ib qho ntau.
Cov txheej txheem: electrolytes, pH nqi thiab lwm tus nqi thiab lwm yam ntxiv yuav cuam tshuam rau kev sib cais thiab kev ncua sijhawm ntawm HPMC.
2. Kev tsim qauv thiab cov hau kev
2.1 Kev Tshawb Fawb
HPMC kuaj (viscosities txawv, hom kev kho mob sib txawv)
Dej distilled
Dirring Ntaus
Viscometer (xws li hloov vis exctereter)
Laser colfle loj kws tshuaj ntsuam
2.2 Kev sim ua ntu zus
Kev txiav txim siab ntawm kev siv dej qeeb qeeb
Nyob rau hauv kub tsis tu ncua (25 ℃), ib qho me me ntawm Kimacell® tau maj mam xaim los ua thiab lub sijhawm uas yuav tsum tau ua kom tiav los ua kom tiav.
Viscosity Hloov Ntsuas
Qhov kev daws viscosity tau ntsuas txhua 5 feeb siv lub volcupeter sib hloov los sau tas li nws cov lus HPMC.
Kev Kuaj Solubility
Cov qauv tau ua rau ntawm cov ntsiab lus sib txawv, thiab cov khoom tsis muaj kev sib cais los ntawm lub taub lim los txiav txim siab cov solubility dhau sijhawm.
Kev tsom xam me me
Ib lub laser coltle me me analyzer tau siv los ntsuas qhov kev hloov pauv HPMC thaum lub sijhawm ua haujlwm ntawm cov dej num ntawm cov dej qeeb.
3. Kuaj cov txiaj ntsig thiab tshuaj ntsuam xyuas
Cov txiaj ntsig kev sim siab qhia tau tias HPMC nrog cov qauv viscosity sib txawv thiab cov txheej txheem kev sib txawv muaj cov hydration sib txawv ncua cov yam ntxwv. HPMC tsis muaj kev kho deg kom sai sai sai sai sai sai sai sai sai sai hauv dej, Thaum HPMC nrog tshwj xeeb kev kho mob muaj lub sijhawm hydration tshwj xeeb thiab ntau yam kev sib cais.
Cov nyhuv ntawm viscosity ntawm hydration ncua
Tsawg-viscosity HPMC cov lus muaj cov dej luv luv ncua sijhawm vim lawv qhov hnyav me me; High-viscosity HPMC muaj kev ncua sij hawm ntev dua vim nws cov qauv molecular ntev.
Cov nyhuv ntawm cov npoo kho ntawm hydration ncua
HPMC hais kom kho nrog Hydrophobic txheej tau txo cov wettability nyob rau hauv dej, thiab cov hydration ncua sij hawm tuaj yeem txuas ntxiv mus rau 10-30 feeb.
Cov nyhuv ntawm particle loj faib
Cov nplais zoo muaj lub sijhawm luv luv qeeb, thaum cov khoom loj muaj qhov tseem ceeb dua hydration ncua sij hawm vim hais tias tus cawv txheej ntawm lub npoo npoo av.
Kev xaiv muaj zog ntawmHPMCtuaj yeem ua kom nws daim ntawv thov hauv kev tsim kho thiab lwm yam kev lag luam, txhim kho kev tsim kho kev ua haujlwm thiab cov khoom siv ruaj khov. Txoj kev kawm no tuaj yeem muab kev tshawb fawb rau kev siv ua kom zoo ntawm HPMC thiab cov lus qhia kev hloov kho
Lub Sijhawm Post: Feb-21-2025