Sib tov hydroxypropyl methylcellose (HPMC) yuav tsum ua tib zoo saib xyuas kom ntseeg tau tias kev ua kom zoo thiab kev ua haujlwm ntawm polymer. HPMC yog ib qho ntau yam ntxiv siv nyob rau hauv cov tshuaj tshuaj paus, cov tshuaj pleev ib ce, cov khoom siv tsim kho, thiab ua cov khoom noj, tuab thiab ruaj khov. Thaum sib xyaw kom raug, hpmc tuaj yeem muab cov khoom siv xav tau xwm yeem, kev ntxhib los mos, thiab kev ua tau zoo hauv ntau yam kev siv.
Nkag siab HydroxyPropyyl Metthylcelulose (HPMC)
HydroxyPropyyl methylcellulose (HPMC) yog cov khoom siv hluavtaws tuaj ntawm cellulose. Nws yog soluble hauv dej tab sis insoluble hauv cov kuab tshuaj organic, ua rau nws zoo tagnrho rau cov aqueous. HPMC cov khoom, xws li viscosity, gelation, thiab zaj duab xis tsim muaj peev xwm xws li molecular hnyav, thiab qhov piv txwv ntawm hydroxypropyl rau methyl pawg.
Yam cuam tshuam nrog kev sib xyaw:
Qhov loj me me: HPMC muaj nyob rau hauv ntau lub particle qhov ntau thiab tsawg. Cov ntsiab lus tshaj tawm kom yooj yim dua cov ntxhib.
Qhov kub thiab txias: Ntau dua sim siab feem ntau ua nrawm dua qhov kev sib cais thiab kev tawg. Txawm li cas los xij, tshav kub ntau dhau yuav txo HPMC.
Shear tus Nqi: Cov hau kev sib xyaw uas muab cov shear txaus yog qhov tseem ceeb rau dispersing HPMC uniformly.
Ph thiab ionic lub zog: Ph thiab Eionic lub zog cuam tshuam HPMC's Solubility thiab hydration kinety. Kev kho tej zaum yuav tsim nyog nyob ntawm daim ntawv thov.
Kev sib xyaw cov txheej txheem kev npaj ntawm cov nruab nrab dispersion:
Pib los ntawm kev ntxiv qhov yuav tsum tau muaj ntawm cov dej uas muaj kev phom sij lossis dej distilled rau lub thawv kom huv. Zam kev siv dej nyuaj, raws li nws yuav cuam tshuam HPMC txoj kev ua tau zoo.
Yog tias tsim nyog, kho cov ph ntawm cov tshuaj uas siv cov kua qaub lossis hauv paus kom ua kom zoo HPMC Solubility.
Ntxiv HPMC:
Maj mam me ntsis hpmc rau hauv lub dispersion nruab nrab thaum nplawm tsis tu ncua los tiv thaiv clumping.
Hloov pauv, siv cov khaub noom siab loj lossis homogenizer rau kev sib cais sai dua thiab ntau dua.
Sib xyaw Duration:
Txuas ntxiv sib xyaw kom txog thaum HPMC yog tag nrho cov dispersed thiab hydrated. Tus txheej txheem no yuav siv sijhawm ob peb feeb txog rau teev, nyob ntawm qib HPMC thiab kev sib xyaw.
Tswj kub:
Tswj qhov kub sib xyaw ua ke nyob rau hauv cov kev pom zoo kom tiv thaiv kev ua kom muaj kev txwv thiab ua kom muaj dej kom zoo.
Kev sib xyaw tom qab sib xyaw:
Cia HPMC dispersion mus rau kev ruaj khov rau kev siv sijhawm txaus ua ntej siv, raws li qee yam khoom yuav txhim kho nrog kev laus.
Kev txiav txim siab rau cov ntawv thov sib txawv:
Kws Tshuaj:
Xyuas kom ntseeg tau tias muaj kev sib cais ua tiav kom ua tiav kev siv tshuaj thiab yeeb tshuaj tawm.
Xav txog compatibility nrog lwm yam kev cia siab thiab cov khoom xyaw nquag.
Cov tshuaj pleev ib ce:
Txhim kho viscosity thiab rheological cov khoom rau cov khoom xav tau khoom xws li kev sib tw thiab kev ruaj khov.
Kev sib xyaw lwm cov kev sib ntxiv xws li cov tshuaj tiv thaiv thiab cov tshuaj tua kab mob antioxidants raws li xav tau.
Cov Khoom Siv Siv:
Kev tswj viscosity kom ua tiav qhov kev ua haujlwm xav tau thiab sib xws hauv cov qauv xws li cov nplaum, thiab tsho tiv no.
Xav txog compatibility nrog lwm cov khoom xyaw thiab ib puag ncig.
Khoom Noj Khoom Noj:
Ua raws li cov qauv noj zaub mov thiab cov cai thiab cov cai.
Xyuas kom muaj kev faib ua kom tiav kom ua tiav kev ntxhib los mos, qhov ncauj, thiab kev ruaj khov hauv cov khoom xws li cov kua ntses, cov khoom hnav, thiab bakery.
Kev daws teeb meem:
Clumping lossis agglomeration: nce shear tus nqi lossis siv kev ntxhov siab ua kom tawg cov pawg.
Tsis txaus ua tawg: txuas ntxiv ua kom ntev lossis kho cov ntsuas kub thiab rhaub thiab xav tau.
Viscosity sib txawv: Tshawb xyuas HPMC qib thiab concentration; Kho cov qauv tsim yog tias tsim nyog.
Gelling lossis flocculation: tswj qhov kub thiab kub thiab sib tov ceev kom tiv thaiv kev ua ntej gelation lossis flocculation.
Sib tov hydroxypropyl methylcellose (HPMC) yuav tsum ua tib zoo xav txog ntau yam xws li qhov loj me, kub, thiab Ph. Los ntawm kev nkag siab txog cov txheej txheem sib xyaw ua ke, koj tuaj yeem ua tiav kev sib xyaw ua ke thiab HPMC rau kev ua tau zoo hauv chaw muag tshuaj, tshuaj pleev ib ce, thiab khoom siv khoom siv. Kev tshuaj xyuas thiab daws teeb meem li niaj zaus kom ua tau cov khoom lag luam zoo thiab ua tau zoo.
Lub Sijhawm Post: Mar-13-2024