Taw qhia rau Carboxymethyl Cellulose (CMC)
Carboxymethyl cellulose, feem ntau abbreviated li CMC, yog ib tug ntau yam derivative ntawm cellulose, ib txwm tshwm sim polymer pom nyob rau hauv lub cell phab ntsa ntawm cov nroj tsuag.Nws tau txais los ntawm kev hloov kho tshuaj ntawm cellulose, feem ntau yog los ntawm kev qhia txog carboxymethyl pawg (-CH2-COOH) mus rau hauv cov pob txha cellulose.
Structure thiab Properties
CMC khaws cov qauv hauv paus ntawm cellulose, uas yog cov kab sib txuas ntawm cov piam thaj molecules txuas los ntawm β (1 → 4) glycosidic bonds.Txawm li cas los xij, kev taw qhia ntawm pawg carboxymethyl muab ntau yam khoom tseem ceeb rau CMC:
Dej Solubility: Tsis zoo li haiv neeg cellulose, uas yog insoluble nyob rau hauv dej, CMC yog heev soluble nyob rau hauv dej kub thiab txias vim hydrophilic xwm ntawm carboxymethyl pawg.
Thickening Agent: CMC yog ib tug zoo thickening tus neeg saib xyuas, tsim viscous daws ntawm tsawg concentrations.Cov cuab yeej no ua rau nws muaj txiaj ntsig hauv ntau yam kev siv, suav nrog zaub mov, tshuaj, thiab cov khoom tu tus kheej.
Film-Forming Muaj peev xwm: CMC tuaj yeem tsim cov yeeb yaj kiab thaum tso tawm los ntawm kev daws teeb meem, ua rau nws muaj txiaj ntsig zoo hauv cov ntawv thov uas yuav tsum tau ua cov yeeb yaj kiab nyias nyias, xws li hauv cov coatings thiab cov nplaum.
Stability thiab Compatibility: CMC yog ruaj khov nyob rau hauv ib tug ntau yam ntawm pH thiab kub tej yam kev mob, ua rau nws sib xws nrog ntau yam khoom xyaw thiab haum rau ntau yam kev siv.
Daim ntawv thov
Ntau yam khoom ntawm CMC pom daim ntawv thov thoob plaws ntau qhov kev lag luam:
Kev lag luam khoom noj khoom haus: CMC yog dav siv los ua cov thickener, stabilizer, thiab emulsifier hauv cov khoom noj xws li kua ntses, hnav khaub ncaws, ice cream, thiab cov khoom ci.Nws txhim kho kev ntxhib los mos, qhov ncauj qhov ntswg, thiab txee ruaj khov.
Pharmaceuticals: Nyob rau hauv cov tshuaj formulations, CMC pab raws li ib tug binder, disintegrant, thiab tswj-tso tus neeg saib xyuas nyob rau hauv cov ntsiav tshuaj thiab tsiav tshuaj.Nws lub peev xwm los tsim cov gels ruaj khov kuj ua rau nws muaj txiaj ntsig zoo hauv cov tshuaj pleev ib ce xws li cream thiab tshuaj pleev.
Cov Khoom Siv Kho Tus Kheej: CMC yog cov khoom muaj nyob rau hauv cov khoom siv tu tus kheej xws li tshuaj txhuam hniav, tshuaj zawv plaub hau, thiab tshuaj pleev, qhov chaw uas nws ua haujlwm ua cov thickener, stabilizer, thiab noo noo retainer.
Kev Lag Luam Ntawv: Hauv papermaking, CMC yog siv los ua tus neeg saib xyuas qhov chaw los txhim kho daim ntawv lub zog, smoothness, thiab ink receptivity.Nws kuj ua raws li kev tuav cia, pab khi cov khoom zoo thiab cov fillers rau hauv daim ntawv.
Textiles: CMC yog ua hauj lwm hauv textile printing thiab dyeing txheej txheem raws li ib tug thickener thiab rheology modifier rau luam pastes thiab dye da dej.
Roj Drilling: Hauv kev lag luam roj drilling, CMC tau ntxiv rau cov dej drilling los muab kev tswj cov viscosity, txo cov kua dej poob, thiab lubrication ntawm cov khoom siv laum.
Kev siv dav dav ntawm carboxymethyl cellulose yog vim nws qhov tshwj xeeb ua ke ntawm cov khoom, uas ua rau nws daim ntawv thov hauv ntau hom.Nws biodegradability thiab non-toxicity ntxiv rau nws qhov kev thov raws li kev ruaj ntseg thiab ib puag ncig tus phooj ywg lwm txoj rau hluavtaws polymers hauv ntau daim ntawv thov.
carboxymethyl cellulose yog qhov tseeb cellulose ether nrog ntau yam kev siv vim nws cov dej solubility, thickening zog, stability, thiab compatibility nrog lwm yam tshuaj.Nws qhov tseem ceeb nthuav dav thoob plaws kev lag luam, ua rau nws muaj txiaj ntsig zoo hauv ntau yam khoom thiab cov txheej txheem.
Lub sij hawm xa tuaj: Plaub Hlis 18-2024