Kev xaiv ntawm cov kws kho mob cellulose hauv cov tshuaj ntxuav tes yuav tsum txiav txim siab ntau yam, suav nrog nws cov thickening kev ua tau zoo, hloov pauv, ruaj khov, biocompatibility thiab nqe.
1. Thickening kev ua tau zoo
Methylcellulose (MC)
Methylcellulose yog ib qho cellulose cellulose ether nrog cov nyhuv zoo heev thiab tuaj yeem muab viscosity uas xav tau ntawm qhov qis dua. Nws cov kev ua tau tuab tuab yog cuam tshuam qhov kub thiab txias thiab haum rau ntau yam ntawm cov tes ntxuav tes.
HydroxyPropyyl methylcellulose (HPMC)
HydroxyPropyyl methylulose tau zoo dua cov kev ua tau zoo dua li methylcelulose, tshwj xeeb tshaj yog nyob rau hauv cov kab ke nrog cov kev muaj siab ntawm surfactants. Tsis tas li ntawd, HPMC muaj cov muaj zog hloov kho kom kub thiab tuaj yeem tswj cov nyhuv tuab heev tshaj qhov ntau qhov kub.
Hydroxyethyl cellulose (HEC)
Hydroxyethyl cellulose muaj cov khoom siv thickening zoo heev thiab tshwj xeeb tshaj yog tsim nyog rau tes cov tshuaj ntxuav tes nrog cov kev xav tau. Nws cov nyhuv tuab yog qhov pom tseeb thiab muaj qhov zoo rau kev hloov pauv.
2. Transparency
Transparency yog qhov taw qhia tseem ceeb rau ntau cov tes ntxuav tes, tshwj xeeb tshaj yog cov neeg xav tau ntawm cov pob tshab lossis txhais tes ua lag luam ntawm cov lag luam. Thaum xaiv cov kws kho mob cellulose, nco ntsoov tias lawv tuaj yeem tsim cov tshuaj uas muaj kev sib xyaw ua ke hauv aqueous.
HPMC thiab HEC
HPMC thiab HEC EXCELES hauv pob tshab thiab tuaj yeem tsim cov kev daws teeb meem zoo heev hauv dej. Lawv tsim nyog rau tes cov tshuaj zoo uas yuav tsum tau muaj siab dua pob tshab thiab muab saib kom zoo thiab hnov zoo.
3. Kev ruaj khov
Tes cov tshuaj ntxuav tes feem ntau muaj ntau yam xyaw, suav nrog surfactants, tshuaj tsw qab, thiab lwm yam, uas yuav cuam tshuam rau kev nyab xeeb ntawm cellulose. Thaum xaiv cov kws kho mob cellulose, nco ntsoov tias lawv tuaj yeem nyob ruaj khov hauv cov qauv nyuaj.
HPMC
HPMC muaj kev ruaj khov zoo nyob rau hauv pH sib txawv ntawm p thiab qhov haum kub thiab haum rau ntau hom tshuaj ntxuav tes. Nws tseem ruaj khov nyob rau hauv cov kab ke nrog cov siab ntawm surfactants thiab elecolytes.
Tus pa
HEC muaj tshuaj lom neeg ruaj khov thiab yog haum rau txhais tes formulizing nrog cov siab ntawm electrolytes thiab surfactants. Nws yog qhov ruaj khov nyob rau hauv ob lub acidic thiab alkaline ib puag ncig thiab yog ib tug ntseeg tau cov tuab tuab.
4. Biocompatibility
Raws li cov khoom tu tus kheej, kev nyab xeeb thiab biocompatibility ntawm tes cov tshuaj xyaw tseem ceeb heev. Cov neeg hais txog cellulose feem ntau muaj cov biocompatibility zoo thiab tsis ua rau tawv nqaij ua xua lossis khaus.
HPMC thiab HEC
Ob tus HECC thiab HEC muaj zoo biocompatibility thiab tau siv dav hauv cov tshuaj pleev ib ce thiab chaw muag tshuaj. Lawv tsis txhob ua rau daim tawv nqaij thiab haum rau txhais tes cov tshuaj zoo rau cov neeg muaj cov tawv nqaij rhiab.
5. Nqe
Nqe kuj tseem yog qhov tseem ceeb tshaj plaws kom thiaj xav txog thaum xaiv cov kws muaj kev hais daws cellulose. Cov nqi ntawm ntau hom cellulose muaj neeg ua txawv heev, thiab lawv yuav tsum tau raug xaiv raws li cov kev xav tau tshwj xeeb thiab cov peev nyiaj.
MC
MC muaj tus nqi pheej yig thiab haum rau txhais cov tshuaj ntxuav tes nrog cov nqi siab tswj tau. Txawm hais tias nws qhov kev ua tau zoo tsis zoo li HPMC thiab HEC, nws tseem tuaj yeem ua tau raws li kev xav tau hauv ntau cov ntawv thov.
HPMC thiab HEC
HPMC thiab HEC muaj tus nqi siab dua, tab sis lawv cov kev ua tau zoo dua thiab haum rau kev ua kom huv ntawm tes cov tshuaj ntxuav tes. Yog tias cov peev nyiaj tso tawm, xaiv HPMC lossis HEC tuaj yeem txhim kho cov khoom lag luam zoo thiab cov neeg siv khoom.
Xaiv ib cellulose tsim nyog ether yuav tsum muaj kev txiav txim siab txog qhov tseeb xws li thickenency kev ua tau zoo, muaj kev ruaj khov, biocompatibility thiab nqe. Methylcellulose (MC) muaj tus nqi qis thiab haum rau cov qauv tsim yooj yim; HydroxyPropyyl methylulose (HPMC) thiab hydroxyethyl cellulose (HEC) muaj cov khoom ua haujlwm zoo dua thiab haum rau cov tshuaj ntxuav tes siab. Ethare tsim nyog ether raws li cov kev xav tau thiab kev siv nyiaj tuaj yeem txhim kho cov kev sib tw zoo thiab kev ua lag luam kev sib tw ntawm txhais tes.
Lub Sijhawm Post: Feb-17-2025