Dab tsi yog sodium carboxymethyl cellulose?

Sodium Carboxymethyl cellulose (CMC) yog ib qho ntau yam thiab dav siv sib txuas nrog ntau cov kev lag luam thoob plaws ntau yam kev lag luam.

Taw qhia rau Sodium Carboxymethyl Cellulose (CMC)
Sodium Carboxymethyl cellulose, feem ntau luv luv li CMC, yog qhov ua rau ntawm cellulose, ib qho ntawm cov muaj txiaj ntsig zoo tshaj plaws hauv ntiaj teb. Cellulose, tsim los ntawm cov chav dej qab zib rov ua tiav los ntawm cov phab ntsa ntawm cov ntoo ntawm cov nroj tsuag ntawm tes, muab kev txhawb nqa ntawm cov txheej txheem. Nws yog txuas dua tshiab, thiab tsis muaj tshuaj lom, ua rau nws txaus siab cov khoom siv raw rau ntau qhov kev siv khoom.

Cov qauv thiab cov khoom
CMC yog synthesized los ntawm kev hloov cellulose los ntawm kev siv tshuaj tiv thaiv kab mob, cov pab pawg hydroxyl tau hloov nrog cov pawg carboxymethyl (-ch2-npoh). Qhov no hloov chaw uas cuam tshuam cov dej solubility thiab txhim kho rheological cov yam ntxwv rau cellulose, ua rau nws haum rau ntau cov ntawv thov.

Cov degree ntawm kev hloov pauv (DS) yog hais txog qhov nruab nrab carboxymethyl pawg nyob rau hauv lub cellulose chav tsev thiab cuam tshuam cov khoom ntawm CMC. Cov DS cov nuj nqis ntau dua ua rau cov dej solubility nce ntxiv thiab viscosity.

CMC feem ntau muaj xws li cov hmoov dawb paug kom dawb, nrog sib txawv ntawm cov me me nyob ntawm nws daim ntawv thov. Nws yog tsis muaj ntxhiab, tsis muaj tshuaj, thiab tsis muaj tshuaj lom, ua rau nws muaj kev nyab xeeb rau kev siv hauv cov zaub mov thiab cov khoom lag luam. CMC yog ruaj khov nyob rau hauv ntau ntau ntawm pH cov kev mob thiab cov khoom pov thawj zoo nkauj ua yeeb yaj kiab cov khoom.

Cov Qauv Ntau Lawm
Kev tsim cov CMC koom nrog ntau kauj ruam:
Kev npaj ntawm cellulose: cellulose ib txwm muaj los ntawm ntoo pulp, cov paj rwb nyom, lossis lwm cov nroj tsuag cov fibers. Lub cellulose yog huv thiab tawg rau hauv cov fibers me me kom nce nws cov kev cuam tshuam.

ETherification tiv thaiv: Cov celluled cellulose fibulose tau kho nrog sodium hydroxide (Naoh) kom qhib cov pab pawg hydroxyl. Tom qab, monochloroacetic acid (lossis nws cov ntsev ntsev) ntxiv rau cov tshuaj tiv thaiv cov tshuaj tiv thaiv carboxymethyl rau hauv lub cellulose.

Kev nruab nrab thiab ntxuav: tom qab cov tshuaj tiv thaiv kab ntsig, cov khoom lag luam tshwm sim yog neutralized nrog ib qho acid los hloov nws mus rau hauv cov ntsev ntsev. CMC yog tom qab ntawd ntxuav kom tshem tawm impurities thiab cov khoom lag luam.

Kom qhuav thiab milling: lub huv si: Lub lim dej Coll Ed

Siv thiab Kev Siv
Sodium Carboxymethyl cellulose pom dav dav dav ntawm kev lag luam:
Kev lag luam khoom noj khoom haus: CMC tau dav siv ua cov thickener, stabilizer, thiab noo noo khoom siv mis nyuj xws li cov khoom noj, cov khoom noj, thiab hnav khaub ncaws. Nws txhim kho kev ntxhib los mos, tiv thaiv synergesis, thiab txhim kho cov ncauj ua rau cov khoom noj.

Kws Tshuaj Kho Mob: Hauv kev lag luam kev lag luam, CMC yog siv los ua cov ntawv sau ua qauv, viscosity hloov pauv hauv kev ncua, thiab roj nplua nyeem hauv ophthalmic kev daws teeb meem. Nws ua kom muaj kev faib tawm cov tshuaj thiab muab tso tawm.

Cov khoom lag luam ntawm tus kheej: CMC tau sib xyaw rau cov khoom lag luam ntawm cov khoom siv tshuaj txhuam hniav xws li cov tshuaj txhuam hniav, thiab tawv nqaij tawv, pleev xim rau tus neeg sawv cev.

Kev lag luam ntawv: hauv papermaking, cmc tau ntxiv rau purp formulations kom txhim kho daim ntawv lub zog, thiab ua kom muaj nuj nqis rau cov fillers thiab dyes. Nws tseem yuav txhim kho cov dej ntws thiab txo cov hmoov av thaum lub sijhawm tsim ntawv.

Textile kev lag luam: CMC yog siv rau hauv textile luam ntawv thiab ntxaub cov txheej txheem raws li cov tuab thiab muaj zwm rau cov xim av. Nws pab txhawb cov xim Underform thiab txhim kho qhov tseeb ntawm cov qauv luam tawm.

Roj thiab roj kev lag luam: CMC tau ua haujlwm hauv cov kua dej drilling raws li cov viscosifier thiab kua roj reducer. Nws pab tswj hwm borehole stability, ncua cov khib nyiab, thiab tswj cov kua rheology thaum lub sijhawm khiav haujlwm.

Kev lag luam tsim kev tsim kho: hauv kev tsim kho cov khoom siv xws li tshuaj cug, grouts, thiab gypsum, thiab gypsum, thiab gypsum, thiab gypsum, thiab kev txhim kho kev ua haujlwm ntawm tus neeg saib xyuas, txhim kho kev ua haujlwm thiab cov khoom ua haujlwm.

Tshuaj ntxuav thiab ntxuav khoom: CMC ntxiv rau cov tshuaj ntxuav, ntxuav, thiab cov khoom ntxhua khaub ncaws, thiab cov neeg sawv cev ua kom ruaj khov. Nws txhim kho cov viscosity ntawm cov kua formulations thiab txhim kho lawv cov kev ua tau zoo tag nrho.

Kev txiav txim kev nyab xeeb
Sodium Carboxymethyl cellulose feem ntau yog pom tias muaj kev nyab xeeb (gras) rau kev siv cov zaub mov thiab tshuaj noj (FDA) thiab European). Txawm li cas los xij, nws yog qhov tseem ceeb kom ua raws li kev ua raws cai raws li cov qauv kev coj ua thiab kev siv kev siv los tiv thaiv cov kev tsis zoo.

Thaum CMC suav hais tias tsis muaj pa yeeb, ntau dhau ntawm cov hmoov av tej zaum yuav ua rau muaj kev npau taws thiab txoj kev ua pa. Cov khoom tsim nyog tuav thiab cov khoom tiv thaiv tus kheej (PPE) yuav tsum ua haujlwm thaum tsim thiab tuav cov txheej txheem.

Cuam tshuam ib puag ncig
CMC yog muab tau los ntawm cov khoom siv txuas ntxiv dua tshiab, feem ntau cog-basulose, ua rau nws muaj cov biodegradable. Nws undergoes enzymatic degradation los ntawm cellulases, thaum kawg tsoo mus rau hauv cov pa roj carbon dioxide, dej, thiab biomass.

Txawm li cas los xij, cov txheej txheem ntau lawm ntawm CMC koom nrog cov kev cuam tshuam siv hluav taws xob thiab cov kauj ruam muaj zog, uas tuaj yeem pab txhawb kev siv hluav taws xob ib puag ncig, thiab tsev cog khoom siv nyiaj txiag. Kev siv zog los kho cov txheej txheem ntau lawm, ua kom muaj zog zog ntau lawm, thiab txo cov khib nyiab tuaj yeem txo cov kev txhawj xeeb ib puag ncig.

Sodium Carboxymethyl cellulose (CMC) yog ntau yam kev sib txuas nrog cov kev thov ntau yam thoob plaws cov khoom noj, cov ntaub ntawv, ntaub pua chaw, thiab lwm yam kev lag luam. Nws cov khoom tshwj xeeb ua cov dej-soluble polymer ua rau nws tsis tseem ceeb hauv ntau cov qauv, qhov chaw nws ua haujlwm ua cov tuab, cdinder, thiab viscosity concifiv.