Methylcellulose (MC)yog qhov sib txuas los ntawm cellulose thiab yog siv dav hauv cov zaub mov, tshuaj, tshuaj pleev ib ce thiab lwm yam kev lag luam. Nws yog cov dej-soluble cellulose derivative nrog qee cov tuab tuab, loj hlob, emulsification, raug ncua thiab lwm yam khoom.
Tshuaj lom neeg cov khoom siv thiab cov txheej txheem ntau lawm ntawm methylcellulose
Methylcellulose tau txais los ntawm kev rov ua cellulose cellulose (cov qauv hluav taws xob tseem ceeb hauv cov nroj tsuag) nrog methyl chloride, methanol, thiab lwm yam). Los ntawm methylation cov tshuaj tiv thaiv, cov pab pawg hydroxyl) (-h) ntawm cellulose yog hloov los ntawm lub methyl pab pawg (-ch3) los tsim methylcellulose. Cov qauv ntawm methylcellulose zoo ib yam li ntawm cov cellulose qub, tab sis vim nws cov kev hloov pauv qauv, nws tuaj yeem yaj nyob rau hauv dej los ua cov tshuaj uas tsis muaj kuab.
Cov solubility, viscosity thiab gelling cov khoom ntawm methylcellulose muaj feem cuam tshuam nrog cov khoom siv methylation thiab hnyav. Raws li cov kev xav tau txawv, methylcellulose tuaj yeem ua rau cov kev daws teeb meem ntawm cov chaw viscosities sib txawv, yog li nws muaj ntau cov kev siv hauv kev lag luam ntau yam.
Lub ntsiab siv ntawm methylcellulose
Kev Lag Luam Khoom Noj
Hauv kev lag luam khoom noj khoom haus, yog methylcellulose yog siv los ua cov tuab, stabilizer, emulsifier thiab gelling tus neeg sawv cev. Piv txwv li, hauv cov zaub mov tsis muaj roj lossis roj-tsis muaj roj, methylcellulose tuaj yeem mimic saj ntawm cov rog thiab muab ib qho kev ntxhib. Feem ntau nws siv los npaj cov khoom noj-rau-noj, cov zaub mov khov, khoom qab zib, dej haus, thiab noj khaub ncaws nyias. Tsis tas li ntawd, methylcellulose kuj feem ntau siv nyob rau hauv cov neeg tsis noj nqaij lossis nroj tsuag-ua kom hloov chaw ua kev ntxiv los pab txhim kho cov saj thiab kev ua qauv.
Kws Siv Khoom Siv
Hauv kev lag luam kws tshuaj, metylcellulose feem ntau siv los ua kev zam kev zam rau kev ua yeeb yam, tshwj xeeb yog tswj kev tso cai tso tshuaj rau cov tshuaj. Nws tuaj yeem tso cov tshuaj maj mam muab tso rau hauv lub cev, yog li methylcellulose feem ntau siv los ua tus nqa khoom hauv qee cov tshuaj tso tawm. Ntxiv rau, methylcellulose kuj yog siv los npaj cov kua muag tsis zoo los pab kho cov teeb meem qhov muag xws li lub qhov muag qhuav.
Tshuaj pleev ib ce thiab cov khoom siv saib xyuas tus kheej
Methylcellulose yog siv los ua cov tuab, stabilizer, thiab siv tau nyob rau hauv cov tshuaj pleev ib ce, thiab feem ntau siv hauv cov khoom xws li muaj cov tshuaj pleev, cream, thiab tshuaj zawv plaub hau. Nws tuaj yeem nce viscosity thiab ruaj khov ntawm cov khoom, ua rau cov khoom lag luam smoother thaum siv.
Kev Siv Khoom Siv
Methylcellulose tseem dav siv hauv cov ntaub ntawv hauv tsev, tshwj xeeb tshaj yog hauv cov xis mas, thiab cov nplaum thiab cov ntaub ntawv ua kom tuab thiab emulsifier. Nws tuaj yeem txhim kho cov nplaum, fluidity, thiab kev ua haujlwm ntawm cov khoom.
Kev Nyab Xeeb ntawm Methylcellulose
Methylcellulose yog cov tshuaj lom neeg uas tau siv dav dav tau txiav txim siab muaj kev nyab xeeb. Lub Koom Haum Ntiaj Teb Kev Noj Qab Haus Huv (Leej twg) thiab Asmeskas Cov Khoom Noj thiab Tshuaj Siv Tshuaj (FDA) ob qho tib si xav txog qhov kev pheej hmoo ntxiv. Methylcellulose tsis tau zom nyob rau hauv lub cev thiab ua dej-soluble kev noj zaub mov fiber ntau, nws tuaj yeem ua ncaj qha los ntawm cov hnyuv. Yog li ntawd, methylcellulose muaj tsawg toxicity thiab tsis pom tseeb rau tib neeg lub cev.
Cuam tshuam rau tib neeg lub cev
Methylcellulose feem ntau tsis nqus hauv lub cev. Nws tuaj yeem pab txhawb kev mob plab hnyuv sab hauv thiab pab txo cov teeb meem cem quav. Raws li kev noj zaub mov fiber ntau, nws muaj txoj haujlwm ntawm cov dej noo thiab kev tiv thaiv cov hnyuv, thiab tuaj yeem tswj cov ntshav qab zib. Txawm li cas los xij, cov kev nkag ntawm methylcellulose tuaj yeem ua rau muaj kev tsis xis nyob, xws li Corulence lossis raws plab. Yog li ntawd, nws yog ib qho tseem ceeb heev uas yuav tsum siv cov nyiaj me me ntawm methylcellose thaum siv nws ua ib qho ntxiv.
Qhov cuam tshuam ntawm kev ua xua
Txawm hais tias methylcellulose nws tus kheej tsis yog ib qho kev ua xua, qee tus neeg nkag siab yuav muaj cov phom sij tsis zoo los rau cov methylcellulose. Tshwj xeeb tshaj yog nyob rau qee cov tshuaj pleev ib ce, yog tias cov khoom muaj lwm cov khoom xyaw ua tsis muaj zog, nws yuav ua rau muaj kev fab tshuaj tiv thaiv tawv nqaij. Yog li ntawd, nws yog qhov zoo tshaj plaws los ua kev sim ua haujlwm hauv zos ua ntej siv.
Kev tshawb fawb txog kev siv sijhawm ntev
Tam sim no, kev tshawb fawb txog lub sijhawm ntev yuav tsis pom tias nws yuav ua rau muaj mob loj. Coob tus ntawm cov kev tshawb fawb tau qhia tias methylcellulose, thaum siv ib qho kev noj haus fiber ntau ntxiv, muaj qee yam cuam tshuam zoo ntawm kev txhim kho kev cem quav thiab kev txhawb txoj hnyuv.
Raws li cov zaub mov muaj kev nyab xeeb thiab cov tshuaj ntxiv, methylcellulose tau siv dav hauv ntau lub cev, thiab thaum noj cov txiaj ntsig kev noj qab haus huv, xws li kev txhim kho kev noj qab haus huv thiab kev hloov pauv kev quav ntsej muag. Txawm li cas los xij, kev ua kom muaj zog ntau yuav ua rau qee qhov tsis xis nyob, yog li nws yuav tsum siv hauv kev sim. Feem ntau, methylcellulose yog qhov muaj kev nyab xeeb, siv tau zoo thiab siv tau siv.
Lub Sijhawm Post: Kaum-12-2024