HydroxyPropyyl methylcellose (HPMC) yog cov tshuaj uas tsis muaj tshuaj lom neeg siv tshuaj lom neeg nrog cov tshuaj kho mob siab uas yog cov khoom siv roj raw. Nws muaj cov dej ua kom zoo, thickening, zaj duab xis-ua, adhesion, emulsification, yuag.
1. Solubility thiab Dej Solubility
HPMC muaj cov dej ua dej zoo heev thiab tuaj yeem tshem tawm sai heev hauv dej txias los tsim ib qho kev daws teeb meem lossis me ntsis turbid colloidal tov. Nws solubility yog cuam tshuam los ntawm qib kev hloov pauv thiab hnyav hnyav. Hom HPMC sib txawv yuav muaj cov nqi sib txawv ntawm cov dej. Ib qho ntxiv, HPMC kuj tseem tuaj yeem yaj nyob rau qee cov kuab tshuaj organic, xws li ethanol, dej thiab organic kuab tshuaj sib xyaw.
2. Thermal gelation
HPMC muaj cov khoom cua thermal gelation muaj zog, uas yog, nws cov aqueous kev daws yuav dhau los ua cov gel xeev ntawm ib qho kub thiab txias, thiab nws tuaj yeem yaj dua tom qab txias. HPMC nrog cov viscosities sib txawv thiab cov degree hloov tau muaj cov gelation sib txawv, feem ntau ntawm 50-90 ° C. Cov xeeb ceem no ua rau HPMC muaj cov ntawv thov tseem ceeb hauv cov tuam txhab kws kos duab kos duab, xws li cov ntsiav tshuaj uas muaj cov tshuaj-tso tawm), thiab lwm yam.
3. Viscosity thiab thickening
Lub viscos ntawm HPMC yog ib qho ntawm nws lub cev tseem ceeb lub cev, uas nyob ntawm nws cov molecular hnyav thiab kev xav tau. Nws cov tshuaj aqueous muaj cov viscosity ntau dua ntawm qhov qis dua, yog li nws tuaj yeem siv los ua cov tuab. Hauv cov ntaub ntawv hauv tsev (xws li cug thiab putting hmoov), cov nyhuv tuab thiab kho cov rhuaology, yuag thiab kev tsim kho cov khoom siv.
4. Cov kev ua si saum npoo
Vim tias HPMC lwg me me muaj cov pab pawg hydroxypropyl thiab methoxy pab pawg, uas tuaj yeem ua lub luag haujlwm ntawm emulsification, dispersion thiab ruaj khov. Yog li ntawd, HPMC tuaj yeem siv rau hauv cov txheej txheem emulsion, tshuaj pleev ib ce thiab cov zaub mov muaj kev lag luam los pab kom cov khoom tsis muaj zog.
5. Dej ceev ceev
HPMC muaj cov dej ua haujlwm zoo heev thiab tuaj yeem txo cov dej evaporation. Tshwj xeeb, ntxiv hpmc rau cov ntaub ntawv sau ua vaj tsev (xws li cementum thiab txo lub zog ntawm cov dej tsis zoo, thiab txhim kho kev tsim kho kom zoo, thiab txhim kho kev tsim kho.
6. Zaj duab xis-ua cov cuab yeej
HPMC tuaj yeem sau hloov pauv tau thiab pob tshab cov yeeb yaj kiab, uas tseem ceeb heev hauv cov txheej txheem tshuaj (xws li cov khoom siv ntsiav tshuaj) thiab cov khoom lag luam. Nws cov duab ua yeeb yaj kiab ua rau nws tus neeg tiv thaiv kev tiv thaiv zoo los txhim kho cov dej tsis kam thiab tshuab lub zog ntawm cov khoom siv.
7. Tshuaj Ntsuam Xyuas Kev Ruaj Ntseg
HPMC muaj cov tshuaj ruaj khov, acid thiab alkali tsis kam, thiab tsis yooj yim cuam tshuam los ntawm cov kab mob me. Nyob rau hauv lub photy ntawm 3-11, nws cov kev ua tau zoo yog qhov ruaj khov thiab tsis yooj yim rau kev thuam, yog li nws tuaj yeem siv ntau txoj kev ib puag ncig.
8. Kev nyab xeeb thiab biocompatibility
HPMC yog tsis muaj tshuaj lom, tsis muaj kev cuam tshuam, thiab muaj cov biocompatibilibility, thiab muaj qhov zoo siv rau hauv cov zaub mov thiab tshuaj lag luam. Hauv cov chaw muag tshuaj, nws tuaj yeem siv ua kev cog lus, binder thiab nyiaj txiag-tso cov khoom, thiab yog suav tias yog kev zam lub chaw muag tshuaj zoo. Nyob rau hauv kev lag luam khoom noj khoom haus, HPMC kuj tseem siv tau los ua cov thickener thiab emulsifier stabilizer, xws li mis nyuj khov, ci khoom, thiab lwm yam.
9. Tsis kam mus rau enzymolysis
HPMC cov khoom pov thawj zoo tsis kam mus rau enzymolysis nyob rau qee thaj chaw thiab tsis yooj yim decomposed los ntawm cov enzymes. Yog li ntawd, nws muaj qhov zoo hauv qee qhov kev thov tshwj xeeb ntawm cov chaw muag tshuaj (xws li cov tshuaj uas tau tso tawm).
10. Daim Ntawv Thov
Vim nws cov khoom siv lub cev thiab tshuaj lom neeg zoo, HPMC tau dav siv nyob rau hauv ntau qhov kev lag luam:
Kev tsim kho kev tsim kho: Raws li cov tuab thiab dej-khaws cov neeg sawv cev rau cov cug kab cug los txhim kho kev ua haujlwm; Hauv Gypsum cov khoom lag luam, hmoov txhuas, thiab txheej ci, nws plays lub luag haujlwm hauv kev txhim kho rhineology thiab adhesion.
Kws Tshuaj Kho Mob: Siv ua tshuaj siv tshuaj, xws li cov tshuaj pleev ntsiav tshuaj, cov ntsiav tshuaj-tso tawm, thiab cov khoom xyaw tseem ceeb ntawm cov ntsiav tshuaj.
Kev lag luam khoom noj khoom haus: siv los ua cov tuab, emulsifier, stabilizer, thiab cov khoom siv txheej khoom noj kom txhim kho lub saj thiab ruaj khov ntawm cov zaub mov.
Cosmetics industry: used in skin care products, shampoo, toothpaste and other products as a thickener, emulsifier and stabilizer.
Txheej txheem kev lag luam Ink: Txhim kho zaj duab xis-ua cov khoom ntawm cov txheej txheem thiab txhim kho rheology thiab adhesion.
11. Chaw cia khoom thiab kev siv ceev faj
HPMC yog hygroscopic thiab yuav tsum tau muab cia rau hauv qhov chaw txias, qhuav, qhov chaw muaj cua kom deb ntawm lub hnub ci ncaj qha. Thaum siv, tus qauv tsim nyog thiab viscosity yuav tsum tau xaiv raws li kev thov sib txawv kom ua tiav qhov zoo tshaj plaws.
HydroxyPropyyl methylulose (HPMC) yog siv dav hauv ntau qhov kev lag luam vim nws cov tshuaj lom neeg thiab tshuaj lom neeg, ua kom dej, ua yeeb yaj kiab. Nws cov tsis muaj tshuaj lom, tsis muaj mob thiab zoo biocompatibility ua rau nws tshwj xeeb yog qhov tseem ceeb hauv cov zaub mov thiab cov chaw muag khoom. Hauv kev tsim kho ntawm kev tsim kho, cov xim pleev xim, tshuaj pleev ib ce, thiab lwm yam. Yog li ntawd, HPMC yog cov khoom siv polymer tseem ceeb nrog cov kev thov kev cia siab.
Lub Sijhawm Post: Feb-14-2025