Carboxymethyl cellulose (CMC) yog qhov tseem ceeb dej-soluble polymer compound uas yog siv siv tshuaj, tshuaj, textiles thiab lwm daim teb. Hauv kev lag luam khoom noj khoom haus, ib qho tseem ceeb tshaj plaws ntawm CMC yog cov tuab tuab. Thickeners yog chav kawm ntawm cov quav ntxiv uas ua rau viscosity ntawm cov kua yam tsis muaj kua yam tsis muaj lwm yam khoom ntawm cov kua.
1. Cov qauv tshuaj lom neeg thiab cov qauv kev ua haujlwm tuab ntawm carboxymethyl cellulose
Carboxymethylcellose yog ib qho kev tsim kho ntawm cellulose tsim los ntawm kev hloov ib feem ntawm cov pab pawg hydroxyl (-H) ntawm cov pab pawg ntawm Carboxymethyl (-ch2Cooh). Nws cov txheej txheem theem pib yog qhov rov ua dua cov saw ntawm β-d-kua ntshav. Cov lus qhia ntawm Carboxymethyl pab pawg muab CMC Hydrophilicity, muab nws zoo solubility thiab thickening muaj peev xwm nyob rau hauv dej. Nws cov ua haujlwm tuab yog tsuas yog raws cov ntsiab lus hauv qab no:
Kev nyhuv o: CMC yuav o tuaj tom qab nqus dej lwg me, yog li cov roj molecules tau ntes hauv nws cov qauv, nce viscosity ntawm lub system.
Cov nyhuv tsub nqi: cov pab pawg carboxyl hauv CMC yuav yog ib feem ionized hauv dej los tsim cov nqi tsis zoo. Cov pab pawg no yuav ua rau Electrostatic repulsion hauv dej, ua rau cov molecular chains mus nthuav tawm thiab tsim kev daws teeb meem nrog cov viscosity siab.
Saw ntev thiab cov saw ntev: cov saw ntev thiab cov tshuaj nce ntawm cmc molecules yuav cuam tshuam nws cov nyhuv tuab. Feem ntau hais lus, siab dua cov molecular hnyav, ntau dua cov viscosity ntawm kev daws teeb meem; Nyob rau tib lub sijhawm, qhov siab dua ntawm cov kev daws teeb meem, lub viscosity ntawm lub system kuj nce ntxiv.
Molecular cross-txuas: Thaum CMC yog yaj hauv dej, vim yog cov qauv dej sib txuas tau txwv qee qhov kev daws teeb meem, yog li qhia a thickening nyhuv.
2. Daim ntawv thov ntawm Carboxymethyl cellulose hauv kev lag luam khoom noj khoom haus
Hauv kev lag luam khoom noj khoom haus, Carboxymethylcellulose tau siv dav ua lub thickener. Cov hauv qab no yog qee cov ntawv teev npe ntawm cov xwm txheej:
Kev haus cov khoom noj thiab cov khoom noj siv mis: hauv cov kua txiv thiab cov dej haus cov txiv hmab txiv ntoo, cmc tuaj yeem nce viscosity ntawm cov dej haus, txhim kho cov saj thiab txuas lub txee lub neej. Tshwj xeeb tshaj yog nyob rau hauv cov khoom lag luam roj tsawg thiab cov roj tsis muaj roj, cmc tuaj yeem hloov cov mis nyuj thiab txhim kho cov qauv thiab ruaj khov ntawm cov khoom.
Cov kua nplaum thiab cov khoom ua kom zoo: hauv zaub xam lav, lws suav sauce, zam kev sib txawv thiab ncua kev ua kom zoo thiab ua kom cov khoom ruaj khov, thiab ua kom cov khoom ruaj khov.
Mis nyuj khov thiab txias txias: ntxiv cmc rau mis nyuj khov thiab txias thiab ntau dua, tiv thaiv kev tsim cov muaju hauv thiab txhim kho cov saj.
Mov ci thiab cov khoom ci: hauv cov khoom ci xws li qhob cij thiab khoom qab zib, CMC yog siv lub ncuav ci ntsa iab, ua rau lub rooj noj mov softer, thiab txuas lub txee lub neej.
3. Lwm cov ntawv thov thickening ntawm carboxymethyl cellulose
Ntxiv rau cov zaub mov noj, carboxymethylcelleculose feem ntau siv los ua cov tuab tuab hauv cov tshuaj, tshuaj pleev ib ce, tshuaj lom zem txhua hnub thiab lwm yam kev lag luam txhua hnub thiab lwm yam kev lag luam. Piv txwv li:
Kws Kev Lag Luam: Hauv Tshuaj, CMC feem ntau siv los ua cov tshuaj ntxuav cov tshuaj tsw qab, kom cov tshuaj, kom cov tshuaj muaj kev sib txuam zoo dua thiab tuaj yeem txhim kho qhov ruaj khov ntawm cov tshuaj.
Tshuaj pleev ib ce thiab niaj hnub niaj hnub xws li tshuaj txhuam hniav, zawv plaub hau, thiab lwm yam.
4. Kev nyab xeeb ntawm Carboxymethyl cellulose
Kev nyab xeeb ntawm Carboxymethylcelleculose tau lees paub los ntawm ntau cov kev tshawb fawb. Txij li thaum CMC yog muab tau los ntawm cov xov tooj ntawm ntuj thiab tsis zom thiab nqus hauv lub cev, feem ntau nws tsis muaj qhov tsis zoo rau tib neeg kev noj qab haus huv. Ob lub ntiaj teb kev noj qab haus huv (tus neeg) Ntawm daim ntaub tsim nyog, cmc tsis tsim cov tshuaj lom neeg lom thiab muaj qee yam lubrication thiab laxative teebmeem ntawm cov hnyuv. Txawm li cas los xij, kev ua kom muaj ntau dhau yuav ua rau cov txheej txheem tsis xis nyob, yog li cov qauv tshuaj noj yuav tsum tau ua kom nruj me ntsis rau hauv cov zaub mov khoom noj.
5. Qhov zoo thiab qhov tsis zoo ntawm Carboxymelylcellose
Carboxymetylcellulose muaj nws cov txiaj ntsig thiab cov kev txwv raws li cov tuab tuab:
Cov txiaj ntsig: CMC muaj cov dej ua kom zoo, thermal stability thiab tshuaj stability, yog acid thiab alkali resistant, thiab tsis yooj yim degraded. Qhov no tso cai rau nws siv ntau yam kev ua haujlwm ib puag ncig.
Qhov tsis zoo: CMC yuav dhau los ua lub dav dav heev ntawm cov kev muaj siab thiab tsis haum rau txhua cov khoom. CMC yuav thuam nyob rau hauv ib puag ncig acidic, ua rau muaj kev txo qis ntawm nws cov nyhuv thickening. Kev ceev faj yuav tsum tau thaum siv nws hauv cov nqaij acidic lossis cov zaub mov.
Raws li qhov tuab tuab tuab, carboxymethylcelleculose tau siv dav hauv cov zaub mov, tshuaj, tshuaj pleev ib ce thiab lwm thaj chaw ua haujlwm solubility, thickening thiab ruaj khov. Nws cov nyhuv zoo tshaj plaws thiab kev nyab xeeb ua rau nws siv cov khoom ntxiv uas muaj txiaj ntsig hauv kev lag luam niaj hnub. Txawm li cas los xij, kev siv CMC kuj xav tau kev tshawb fawb tau tswj raws li cov kev xav tau tshwj xeeb thiab cov nqi kho mob kom ntseeg tau tias qhov kev ua tau zoo thiab kev nyab xeeb noj.
Lub sijhawm Post: NOV-04-2024