Kws khaws cia
Hydroxypropylulose (HPMC) yog xim dawb lossis cov hmoov av dawb, cov dej khov, maj mam ua rau kom qhuav, peptization, thiab sib sau ua ib Cov tshuaj colloous colloidal, uas dhau los ua kev daws teeb meem thaum txias, thiab ua ib qho gel thaum ua kom sov. HPMC yog insoluble hauv ethanol, chloroform thiab ether. Nws yog soluble hauv cov kuab tshuaj sib xyaw ntawm cov methanol thiab methyl chloride. Nws tseem yog soluble hauv kev sib xyaw ua ke ntawm acetone, methyl chloride thiab isopropanol thiab qee lwm cov kuab tshuaj organic. Nws cov kua aqueous tuaj yeem zam ntsev (nws txoj kev daws teeb meem colloidal tsis tau rhuav tshem los ntawm ntsev), thiab cov ph ntawm 1% kev daws teeb meem yog 6-8. Cov mis nyuj molecular ntawm HPMC yog C8h15o8- (C10H18o6) -C815o, thiab cov txheeb ze cov roj av yog li 86,000.
HPMC muaj cov dej txi zoo heev hauv dej txias. Nws tuaj yeem yog yaj mus rau hauv kev daws teeb meem nrog me ntsis stirring hauv dej txias. On qhov tsis tooj, nws yog qhov tseem insoluble hauv dej kub saum 60 ℃ thiab tuaj yeem tsuas yog o. Nws yog cov tsis-ionic cellulose ether. Nws cov kev daws teeb meem tsis muaj kev them nqi ionic, tsis cuam tshuam nrog cov kav dej hlau lossis cov khoom siv ionic, thiab tsis cuam tshuam nrog lwm cov txheej txheem npaj ua haujlwm; Nws muaj cov khoom siv tsis haum, thiab nrog kev nce qib nyob rau hauv cov qauv molecular, nws yog qhov tsis tshua muaj kev ua xua thiab muaj zog dua; Nws tseem yog metabolically inert. Raws li lub chaw muag tshuaj saib xyuas, nws tsis yog metabolized lossis nqus tau. Yog li, nws tsis muab calories hauv cov tshuaj thiab khoom noj. Nws yog qhov qis dua calorie, ntsev-dawb, thiab tsis yog ntsev-dawb rau cov neeg mob ntshav qab zib. Kev ua yeeb tshuaj thiab cov khoom noj muaj cov khoom siv tshwj xeeb; Nws yog qhov ruaj khov rau cov kua qaub thiab alkalis, tab sis yog tias tus lej pH tshaj 2 ~ 11 thiab cuam tshuam los ntawm cov sijhawm sijhawm ntau dua lossis muaj lub viscos ntev yuav poob; Nws cov kua aqueous tuaj yeem muab cov haujlwm saum npoo av, uas qhia txog thaj av nruj thiab cuam tshuam cov nro; Nws muaj cov emulsification zoo nyob rau hauv ob-theem system, tuaj yeem siv los ua cov khoom siv khov kho thiab kev tiv thaiv kev tiv thaiv zoo; Nws cov kua aqueous muaj cov yeeb yaj kiab zoo tshaj plaws, nws yog cov ntsiav tshuaj thiab ntsiav tshuaj thiab cov khoom siv txheej zoo. Cov yeeb yaj kiab txheej tsim los ntawm nws muaj qhov zoo ntawm cov xim tsis muaj xim thiab tawv heev. Ntxiv cov glycerin kuj tseem tuaj yeem txhim kho nws cov plastonity.
Kev txhawj xeeb ® HPMC cov khoom tuaj yeem txhim kho los ntawm cov yam hauv qab no hauv cov khoom khaws cia:
· Ib tug me soluble hauv dej thiab volatilized los ntawm cov kuab tshuaj, HPMC ua pob tshab zaj duab xis nrog lub zog siab tensile lub zog.
· Ua kom tau txais lub hwj chim loj.
Hydrophilic matrix siv nrog HPMC hydrates los tsim cov txheej gel, tswj cov qauv tshuaj tso tawm.
| Pom zoo qib: | Thov TDS |
| HPMC 60xax5 | Nyem qhov no |
| HPMC 60ax15 | Nyem qhov no |