Dissolving hydroxypropylages (HPMC) hauv dej yog ib qho kev coj ua hauv ntau qhov kev lag luam, suav nrog cov tshuaj, cov khoom noj, tshuaj pleev ib ce, thiab kev tsim kho. HPMC yog lub cellulose derivative uas ua cov pob tshab, tsis muaj kob, thiab cov tshuaj pleev xim thaum sib xyaw nrog dej. Qhov kev daws teeb meem kev daws teeb meem zoo li thickening, khi, zaj duab xis-sib sau, thiab txhawb nqa cov khoom xyaw nquag. Cov txheej txheem kev sib cais ntawm HPMC hauv dej koom nrog cov kauj ruam tshwj xeeb kom ntseeg tau tias kom muaj kev cais kom zoo thiab kev sib dhos.
Taw qhia rau HPMC:
HydroxyPropyyl methylcellose (HPMC) yog cov tsis-ionic cellulose ether tau los ntawm ntuj ntawm lub ntsej muag polymer cellulose. Nws yog synthesized los ntawm kev kho cellulose nrog cov tshuaj pleev cov epylene oxide thiab methyl chloride. HPMC tau siv dav hauv ntau yam kev lag luam vim nws cov yeeb yaj kiab zoo tshaj plaws, thickening, ruaj khov, thiab dej-cia khoom. Thawj cov ntawv thov ntawm HPMC suav nrog:
Kws Tshuaj: Siv los ua cov phau ntawv, zaj duab xis yav tas los, tus neeg sawv cev tawm hauv cov ntsiav tshuaj, tsiav tshuaj, tshuaj pleev, thiab ncua.
Kev lag luam khoom noj: siv raws li cov tuab ua cov thicker, emulsifier, thiab noo noo khaws cov khoom noj hauv cov khoom noj, mis nyuj, thiab cov khoom ci.
Kev Tsim Kho: Ua raws li cov khoom siv dej ua ke, cov nplaum thiab cov ntaub tuab hauv cov khoom siv caas-based, gypsum-based plasters, thiab pobzeb cov nplaum.
Cov tshuaj pleev ib ce: Ua haujlwm raws li cov tuab yaj duab, zaj duab xis yav tas los, thiab emulsion stabilizer nyob rau hauv lotions, cream, ntaub thaiv, thiab cov khoom tu tus kheej.
Cov txheej txheem ntawm HPMC hauv dej:
Dissolving HPMC hauv dej cuam tshuam nrog ntau kauj ruam tseem ceeb kom ua tiav cov khaub ncaws tsis zoo thiab ruaj khov:
Xaiv cov qib HPMC: Xaiv cov qib HPMC tsim nyog HPMC raws li qhov xav tau, loj me, thiab hloov qib. Cov qib sib txawv muaj sib txawv ntawm cov kab viscosity thiab cov yam ntxwv solubility.
Kev npaj cov dej: Siv dej huv lossis ua kom dej distilled los npaj cov tshuaj. Cov dej ua tau zoo tuaj yeem cuam tshuam ntau qhov cuam tshuam txog kev sib cais thiab cov khoom ntawm cov tshuaj kawg. Zam kev siv dej nyuaj lossis dej uas muaj impurities uas tuaj yeem cuam tshuam nrog kev sib cais.
Qhov hnyav thiab kev ntsuas: Qhov hnyav: Qhov hnyav uas yuav tsum muaj ntau ntawm HPMC siv cov digital tshuav nyiaj li cas. Cov kev pom zoo rau HPMC nyob rau hauv cov dej sib txawv raws li cov ntawv thov. Feem ntau, cov kev pom zoo los ntawm 0.1% rau 5% w / w yog ib qho rau cov ntawv thov feem ntau.
Hydration theem: sprinkle qhov ntsuas HPMC maj mam thiab tusyees mus rau saum npoo ntawm cov dej thaum nplawm tsis tu ncua. Zam tsis txhob muaj HPMC hauv pawg loj kom tiv thaiv tau cov lumps lossis agglomerates. Cia HPMC mus rau hydrate thiab disperse maj mam nyob hauv dej.
Kev sib xyaw ua ke thiab kev ntxhov siab: siv cov khoom sib xyaw zoo xws li tov khoom sib xyaw, lossis cov khoom sib nqus los pab txhawb kev sib cais ntawm HPMC hais hauv dej. Ua tib zoo agitation kom tiv thaiv kom tsis txhob ua npuas dej ntau dhau los yog huab cua entrapment.
Kev tswj qhov kub thiab txias: saib xyuas thiab tswj qhov ntsuas kub thaum lub sijhawm cov txheej txheem sib cais. Feem ntau, chav kub (20-25 ° C) yog txaus rau Dissolt HPMC. Txawm li cas los xij, rau kev sib cais sai dua lossis cov qauv tshwj xeeb, nce qhov ntsuas kub. Zam txhob overheating, raws li nws tuaj yeem txwv cov polymer thiab cuam tshuam cov kev daws teeb meem.
Lub sijhawm ua tiav: kev ua tiav ntawm HPMC tuaj yeem siv sijhawm ntau teev, nyob ntawm cov qhab nia, particle loj, thiab kev siv ntxhov siab. Txuas ntxiv nplawm kom txog thaum daws tau pom meej, pob tshab, thiab pub dawb los ntawm pom lossis agglomerates.
PH tsiv kev (yog tias tsim nyog): hauv qee qhov kev hloov kho, pH kev hloov kho yuav tsim nyog los ua kom zoo rau kev ruaj khov thiab kev ua haujlwm ntawm HPMC tov. Siv cov neeg sawv cev tsim nyog los yog kho cov hom kua qaub lossis hauv paus ua ib qho cai tshwj xeeb.
Kev txiav txim siab (yog tias yuav tsum tau): Tom qab ua tiav kev daws teeb meem HPMC los ntawm kev nplua mesh sab cib lossis lim ntawv kom tshem tawm cov ntawv tsis muaj dab tsi los yog impurities. Cov kauj ruam no ua kom pom tseeb thiab homogeneity ntawm kev daws teeb meem.
Cia thiab ruaj khov: Khaws lub npaj HPMC tov hauv, airtight ntim deb ntawm kev tshav ntuj thiab huab cua sov. Cov kev daws teeb meem khaws cia ruaj ruaj nyob ruaj khov rau ncua sijhawm tsis muaj kev hloov pauv tseem ceeb hauv viscosity lossis lwm yam khoom.
Yam cuam tshuam cuam tshuam rau kev tshem tawm ntawm HPMC:
Ntau yam muaj peev xwm cuam tshuam rau txheej txheem sib cais thiab cov khoom ntawm HPMC daws:
Particle loj thiab qib me me: Finely hmoov cov qib ntawm HPMC yaj tau ntau dua li kev yooj yim dua li ntxhib thiab hwv huas hip ntawm kinetics.
Qhov kub thiab txias: Ntau dua sim ua kom nrawm nrawm ntawm HPMC tab sis kuj tseem yuav ua rau viscosity ploj lossis kev poob qis ntawm cov xwm txheej huab.
Kev kub ntxhov ceev: kom muaj kev ntxhov siab ua kom muaj kev sib cais ntawm HPMC hais thiab txhawb nqa ceev ceev zuj zus. Kev txhawj xeeb ntau dhau yuav qhia cov pa npuas lossis ua npuas dej rau hauv kev daws teeb meem.
Cov dej ua tau zoo: qhov zoo ntawm cov dej siv rau kev ua kom muaj kev sib cais cuam tshuam rau kev pom meej, kev ruaj khov, thiab viscosity ntawm HPMC tov. Lim lossis dej distilled yog nyiam kom txo qis impurities thiab ons uas tuaj yeem cuam tshuam nrog kev sib cais.
PH: Lub Ph Pha ntawm txoj kev daws yuav cuam tshuam rau solubility thiab kev ruaj ntseg ntawm HPMC. Kho cov pH nyob rau hauv cov qib siab ntau rau qib tshwj xeeb ntawm HPMC tuaj yeem txhim kho kev sib cais thiab kev ua tau zoo.
Lub zog: muaj cov ntsev siab los yog ions hauv cov kev daws teeb meem yuav cuam tshuam nrog HPMC rov qab los yog ua rau kev taug kev. Siv cov dej uas muaj deionized lossis kho cov ntsev kom zoo raws li xav tau.
Shear rog: high-shear sib xyaw lossis kev ua haujlwm yuav cuam tshuam rau cov khoom siv rheological thiab kev ua tau zoo ntawm HPMC daws, tshwj xeeb hauv kev siv cov ntawv thov.
Kev daws teeb meem:
Yog tias koj ntsib teeb meem hauv HPMC lossis cov teeb meem kev paub nrog qhov zoo ntawm kev daws, xav txog cov lus qhia daws teeb meem hauv qab no:
Kev Txom Nyem Ua kom dhau los: txhim kho kev sib xyaw los yog siv cov khoom sib xyaw tshwj xeeb los txhawb cov kev faib tawm zoo dua thiab cov lus ntawm HPMC.
Kho tus ntsuas kub: Txhim kho qhov ntsuas kub kom zoo nyob rau hauv cov kev pom zoo kom pab txhawb qhov tsis muaj kev sib cuam tshuam polymer ruaj khov.
Qhov loj me me txo cov qhab nia: Siv cov qhab nia zoo ntawm HPMC lossis ua haujlwm txo qis kev txiav txim siab xws li milling lossis micronization los txhim kho kinetics.
PH Hloov Kho: Tshawb xyuas cov kev daws teeb meem thiab hloov kho raws li qhov tsim nyog los tswj cov kev ua tau zoo rau HPMC solubility thiab ruaj khov.
Cov dej ua tau zoo: Ua kom cov dej huv thiab cov dej zoo siv rau kev sib cais los ntawm kev siv cov kev lim kom haum lossis kev ua kom huv.
Kev Kuaj Xyuas Kev Sib Tw: Ua kev sib raug zoo sib xws nrog lwm cov khoom xyaw tsim los txheeb xyuas cov kev sib txuas lus lossis tsis muaj kev cuam tshuam uas yuav cuam tshuam rau kev xaus kev sib tham.
Tham cov tuam txhab tsim kev lag luam: Xa mus rau cov chaw tsim khoom pom zoo thiab cov qauv qhia tshwj xeeb ntawm HPMC hais txog cov lus qhia tshwj xeeb, thiab cov lus qhia daws teeb meem.
Dissolving hydroxypropylencellulose (HPMC) hauv dej yog ib cov txheej txheem tseem ceeb hauv ntau cov txheej txheem, suav nrog cov tshuaj, kev tsim khoom, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce. Los ntawm kev ua raws cov txheej txheem pom zoo thiab xav txog qhov tseem ceeb thiab dej tsis zoo, koj tuaj yeem ua tiav HPMC daws teeb meem nrog cov khoom siv hluav taws xob uas xav tau. Tsis tas li ntawd, cov tswv yim txhim kho thiab kev ua kom zoo dua tuaj yeem pab kov yeej cov kev cov kev sib tw thiab ua kom qhov kev ua tiav ntawm HPMC rau ntau yam kev siv. Nkag siab txog txheej txheem kev xaus thiab nws
Lub Sijhawm Post: Mar-09-2024