Sodium carboxymethyl cellulose (CMC) is a versatile compound with a wide range of applications across various industries. Nws cov khoom tshwj xeeb ua rau nws muaj nuj nqis hauv cov haujlwm xws li zaub mov noj, chaw muag tshuaj, tshuaj pleev ib ce, thiab lwm yam.
1.introduction rau sodium carboxymethyl cellulose (cmc)
Sodium Carboxymethyl cellulose, feem ntau hu ua CMC, yog dej-soluble polymer muab tau los ntawm cellulose pom hauv tsob ntoo cell phab ntsa. Nws yog synthesized los ntawm kho cellulose nrog sodium hydroxide thiab monochloroacetic acid los yog nws cov ntsev ntsev. Qhov kev hloov kho no ntawm cov qauv cellulose, qhia cov pab pawg cellulose, pab pawg ntawm cov roj carubethyl (-ch2Cooh) los txhim kho nws cov dej solubility thiab lwm yam khoom xav tau.
2. Xaiv los ntawm cov sodium carboxymethyl cellulose
Dej solubility: CMC yog soluble heev hauv dej, sib sau cov kev daws teeb meem txawm tias muaj cov kev ua kom tsawg. Cov cuab yeej no ua rau nws haum rau ntau yam kev siv uas ua tuab, ruaj khov, lossis txoj kev siv tau los ntawm kev sib tw.
Viscosity tswj: cmc daws teeb meem pom pseudopastic tus cwj pwm, txhais tau hais tias lawv viscosity txo qis nyob rau hauv shear kev ntxhov siab. Cov cuab yeej no tso cai rau kev sib xyaw yooj yim thiab cov ntawv thov hauv ntau cov txheej txheem.
Zaj duab xis-tsim muaj peev xwm: CMC tuaj yeem tsim cov duab ntshiab, hloov tau yooj yim thaum cam khwb cia los ntawm kev daws. Cov yeeb yam no pom cov ntawv thov siv, ntim, thiab kws tshuaj.
Ionic them: CMC muaj cov pab pawg carboxylate, muab ion sib pauv peev xwm. Cov cuab yeej no pab tau cmc los cuam tshuam nrog lwm cov nyiaj them ua haujlwm, txhim kho nws cov haujlwm ua cov tuab dua, lossis emulsifier.
pH stability: cmc tseem ruaj khov tshaj li cov lus dav dav, los ntawm acidic rau alkaline cov mob, ua rau nws tsim nyog rau kev siv nyob rau hauv ntau hom.
3. Cov Ntawv Qhia ntawm Sodium Carboxymethyl cellulose
(1). Kev Lag Luam Khoom Noj
Thickening thiab ruaj khov: CMC feem ntau siv los ua tus neeg sawv cev tuab hauv cov khoom noj khoom haus xws li cov kua nplaum, thiab khoom siv mis nyuj. Nws txhim kho kev ntxhib los mos, viscosity, thiab ruaj khov.
Gluten hloov: Nyob rau hauv gluten-dawb ci, cmc muaj mimic cov khoom siv khi ntawm gluten, txhim kho ua khob noom cookie elasticity thiab kev ntxhib los mos.
Emulsification: CMC stabilizes emulsions in products like salad dressings and ice cream, preventing phase separation and improving mouthfeel.
(2). Kws Tshuaj Siv Thiab Kho Mob
Ntsiav tshuaj khi lus: CMC pabcuam ua cov phau ntawv sau ua qauv, pab txhawb kev sib txuas ntawm cov hmoov ua cov khoom noj ntau.
Tshuaj Nrog Yeeb Tshuaj: CMC yog siv hauv cov tshuaj ntawm cov tshuaj uas tau siv los tswj cov khoom xyaw ua haujlwm, txhim kho kev ua haujlwm tshuaj siv tshuaj thiab tus neeg mob.
Cov kev daws teeb meem ophathalmic: CMC yog ib qho khoom xyaw muaj cov khoom xyaw rau hauv lubricating qhov muag ncu thiab cov kua muag cuav, muab cov dej noo ntev los daws cov dryness thiab voos.
(3). Cov Khoom Siv Saib Xyuas Tus Kheej
Thickening thiab kev ncua: cmc thickens thiab stabilizes phim rau cov khoom siv saib xyuas tus kheej xws li cov tshuaj zawv plaub hau, muaj tshuaj txhuam hniav, thiab tshuaj txhuam hniav thiab txee lub neej.
Zaj duab xis tsim: CMC cov ntaub ntawv pob tshab cov yeeb yaj kiab hauv cov plaub hau styling thiab kev saib xyuas tawv nqaij, muab tuav thiab noo noo khaws cia.
4. Textile kev lag luam
Textile sizing: CMC yog siv rau hauv textile sizing ua rau txhim kho cov xov paj lub zog, pab txhawb kev xaws khaub ncaws, thiab txhim kho cov ntaub zoo.
Luam Ntawv thiab Dyeing: CMC ua raws li cov tuab tuab thiab rheology kho hauv textile printing luam tawm thiab ua kom cov xim tsis zoo nkauj thiab cov nplaum.
5. Ntawv thiab Ntim
Daim Ntawv Txheej: CMC yog thov raws li txheej lossis ntxiv hauv ntawv tsim los txhim kho cov khoom xws li du qab cov khoom lag luam xws li smoothness, luam tawm, thiab nyob rau hauv kev nqus.
Adhesive Cov Khoom: CMC tau siv hauv cov nplaum rau cov ntawv ntim khoom, muab kev sib txuas thiab noo noo tsis kam.
6. Cov roj thiab roj kev lag luam
Drilling kua: CMC ntxiv rau cov av nkos siv hauv cov roj thiab roj ua kom tsis txhob muaj viscosity, thiab tsis tiv thaiv cov kua dej, pab kom muaj kev ruaj khov nyob hauv qhov chaw ruaj khov thiab lubricore.
7. Lwm cov ntawv thov
Kev tsim kho: CMC yog siv hauv tshuaj khib thiab plaster cov qauv tsim los txhim kho kev ua haujlwm, adhesion, thiab dej khaws cia.
Ceramics: CMC ua raws li phau ntawv thiab yas yas hauv kev ua lag luam ceramic, txhim kho lub zog ntsuab thiab txo qhov tsis xws luag thaum lub taub hau thiab ziab.
Zus Tau Tej Cov Sodium Carboxymethyl Cellulose
Sodium Carboxymethyl cellulose yog tsim los ntawm ib tus txheej txheem ntau tshaj:
Cellulose sourcing: cellulose los ntawm ntoo pulp, cov duab paj rwb, lossis lwm cov khoom cog ntoo.
Alkalization: cellulose yog kho nrog sodium hydroxide (Naoh) kom nce nws cov kev siv hluav taws xob thiab qhov muaj peev xwm o.
Ethetification: cov kws cellule alkalized tau ua rau cov phooj ywg monochloroacetic acid (lossis nws cov ntsev ntsev) nyob rau hauv cov pab pawg carboxymethyl mus rau lub cellulose.
Kev ua kom huv thiab ziab: Lub txiaj ntsim sodium carboxymethyl cellulose yog purified kom tshem tawm impurities thiab cov khoom lag luam. Nws yog tom qab ntawd qhuav kom tau txais cov khoom kawg hauv cov hmoov hmoov los yog granular daim ntawv.
8.Txawm cov kev cuam tshuam thiab kev ruaj khov
Thaum sodium carboxymethyl cellulose feem ntau suav tias yog muaj kev nyab xeeb rau kev siv thiab cov kev txiav txim siab ib puag ncig cuam tshuam nrog nws cov kev tsim khoom thiab pov tseg:
Cov khoom siv raw so: Qhov kev cuam tshuam ib puag ncig ntawm cmc ntau lawm yog nyob ntawm qhov chaw ntawm cellulose. Cov kev coj ua kom ruaj khov rau cov kev ua hav zoov thiab kev siv cov chaw nyob ua liaj ua teb tuaj yeem txo cov hneev taw kev taug.
Kev Siv Zog: Kev tsim khoom ntawm CMC cuam tshuam nrog kev ua kom muaj zog xws li kev kho Alkali thiab etherification. Kev siv zog los ua kom zoo dua lub zog txuag thiab siv hluav taws xob txuas ntxiv tuaj yeem txo cov pa roj carbon monissions.
Kev tswj khib nyiab: muab pov tseg kom raug ntawm CMC nkim thiab cov khoom lag luam yog qhov tseem ceeb kom tiv thaiv ib puag ncig ib puag ncig. Kev ua dua tshiab thiab rov qab siv cov thawj kauj ruam tuaj yeem txo cov peev txheej me me thiab txhawb kev lag luam ncig kev lag luam.
Biodegradity: CMC yog biodegradable nyob rau hauv aerobic tej yam kev mob, lub ntsiab lus nws tuaj yeem tawg rau hauv kev tsis muaj teeb meem xws li dej, carbon dioxide, thiab biomass.
Sodium Carboxymethyl cellulose (CMC) yog cov polymer ntau yam nrog cov kev siv ntau thoob thoob plaws ntau yam kev lag luam. Nws cov khoom siv tshwj xeeb, suav nrog cov dej so, viscosity tswj, ua yeeb yaj kiab, saib xyuas tus kheej, textiles, thiab lwm yam haujlwm. Thaum CMC muaj cov txiaj ntsig ntau ntau hauv cov kev ua haujlwm thiab kev ua haujlwm tau zoo rau nws lub neej ib puag ncig, los ntawm cov khoom siv roos, los ntawm cov khoom siv raw los pov tseg. Raws li kev tshawb fawb thiab kev tsim kho tshiab txuas ntxiv mus ua ntej, sodium carboxymethyl cellulose tseem muaj txiaj ntsig ntawm ntau yam khoom lag luam, ua rau muaj txiaj ntsig zoo, zoo, thiab cov neeg tau txais txiaj ntsig zoo.
Lub Sijhawm Post: Mar-13-2024