Sodium carboxymethylcellulose (CMC) yog ntau yam thiab ntau yam polymer nrog ntau daim ntawv thov thoob plaws ntau yam kev lag luam. Cov tshuaj no yog muab los ntawm cellulose, ib tug natural polymer pom nyob rau hauv cov nroj tsuag cell phab ntsa. CMC yog tsim los ntawm chemically modifying cellulose los ntawm kev qhia carboxymethyl pawg rau hauv cellulose qaum. Cov txiaj ntsig sodium carboxymethylcellulose muaj cov khoom tshwj xeeb uas ua rau nws muaj txiaj ntsig hauv ntau daim ntawv thov.
Molecular Structure:
Cov qauv molecular ntawm sodium carboxymethylcellulose muaj cov pob txha cellulose nrog cov carboxymethyl pawg (-CH2-COO-Na) txuas nrog qee pawg hydroxyl ntawm cov piam thaj. Qhov kev hloov kho no qhia txog kev solubility thiab lwm yam khoom zoo rau cov cellulose polymer.
Solubility thiab kev daws teeb meem:
Ib qho ntawm cov khoom tseem ceeb ntawm CMC yog nws cov dej solubility. Sodium carboxymethyl cellulose yog yooj yim soluble nyob rau hauv dej thiab tsim ib tug pob tshab viscous kua. Solubility tuaj yeem hloov kho los ntawm kev hloov pauv qib (DS), uas yog qhov nruab nrab ntawm cov carboxymethyl pawg hauv ib chav tsev piam thaj hauv cov saw cellulose.
Rheological zog:
Cov cwj pwm rheological ntawm CMC cov kev daws teeb meem yog qhov tseem ceeb. Lub viscosity ntawm CMC cov kev daws teeb meem nce nrog nce concentration thiab xav tau nyob ntawm qhov kev hloov pauv. Qhov no ua rau CMC ua cov thickener zoo hauv ntau yam kev siv, suav nrog zaub mov, tshuaj thiab cov txheej txheem kev lag luam.
Ionic zog:
Lub xub ntiag ntawm sodium ions hauv pawg carboxymethyl muab CMC nws cov cim ionic. Qhov xwm txheej ionic no tso cai rau CMC cuam tshuam nrog lwm hom tsiaj hauv kev daws teeb meem, ua rau nws muaj txiaj ntsig zoo hauv cov ntawv thov uas xav tau kev khi lossis gel tsim.
pH rhiab heev:
Solubility thiab cov khoom ntawm CMC cuam tshuam los ntawm pH. CMC muaj qhov solubility siab tshaj plaws thiab nthuav tawm nws qhov kev ua tau zoo tshaj plaws nyob rau hauv me ntsis alkaline tej yam kev mob. Txawm li cas los xij, nws tseem nyob ruaj khov tshaj pH ntau yam, muab kev yooj yim rau kev siv sib txawv.
Film forming zog:
Sodium carboxymethylcellulose muaj peev xwm tsim cov yeeb yaj kiab, ua rau nws tsim nyog rau cov ntawv thov uas xav tau tsim cov yeeb yaj kiab nyias lossis txheej txheej. Cov cuab yeej no tuaj yeem siv los tsim cov yeeb yaj kiab uas siv tau, ntsiav tshuaj txheej, thiab lwm yam.
Stablize:
CMC ruaj khov nyob rau hauv ntau yam ntawm ib puag ncig, nrog rau kev hloov pauv kub thiab pH. Qhov kev ruaj ntseg no ua rau nws lub neej txee ntev thiab tsim nyog rau ntau yam kev siv.
Emulsion Stabilizer:
CMC ua raws li cov emulsifier zoo thiab pab kom ruaj khov emulsions hauv cov khoom noj thiab cov tshuaj pleev ib ce. Nws txhim kho kev ruaj ntseg ntawm cov roj-hauv-dej emulsions, pab txhim kho tag nrho cov khoom zoo thiab txee lub neej ntawm cov khoom.
Kev tuav dej:
Vim nws muaj peev xwm nqus dej, CMC yog siv los ua tus neeg saib xyuas dej hauv kev lag luam sib txawv. Cov cuab yeej no muaj txiaj ntsig zoo rau cov ntawv thov xws li textiles, qhov twg CMC pab tswj cov dej noo ntawm cov ntaub thaum muaj ntau yam txheej txheem.
Biodegradability:
Sodium carboxymethylcellulose yog suav tias yog biodegradable vim nws yog muab los ntawm cellulose, ib txwm tshwm sim polymer. Qhov no feature yog heev tus phooj ywg environmentally thiab yog nyob rau hauv txoj kab nrog kev loj hlob ntawm kev thov rau cov ntaub ntawv sustainable nyob rau hauv industries.
daim ntawv thov:
kev lag luam zaub mov:
CMC yog dav siv los ua cov thickener, stabilizer thiab texturizer hauv cov khoom noj.
Nws txhim kho cov viscosity thiab kev ntxhib los mos ntawm cov kua ntses, hnav khaub ncaws thiab cov khoom siv mis nyuj.
tshuaj:
CMC yog siv los ua cov ntawv khi hauv cov tshuaj ntsiav tshuaj.
Nws yog siv rau hauv cov tshuaj pleev ib ce los muab viscosity thiab txhim khu kev ruaj ntseg ntawm gels thiab cream.
textile:
CMC yog siv nyob rau hauv textile ua raws li tus neeg sawv cev sizing thiab thickening tus neeg saib xyuas rau luam pastes.
Nws txhim kho dye adhesion rau ntaub thiab txhim kho kev luam ntawv zoo.
Kev lag luam roj thiab roj:
CMC yog siv rau hauv cov dej drilling los tswj cov viscosity thiab tshem tawm cov khib nyiab.
Nws ua raws li cov dej poob reducer thiab txhim kho kev ruaj ntseg ntawm cov av nkos.
Kev lag luam ntawv:
CMC yog siv los ua tus neeg sawv cev txheej txheej los txhim kho lub zog thiab luam tawm ntawm daim ntawv.
Nws ua raws li kev tuav pov hwm pab hauv cov txheej txheem papermaking.
Cov khoom siv tu tus kheej:
CMC muaj nyob rau hauv ntau yam khoom siv tu tus kheej xws li tshuaj txhuam hniav thiab tshuaj zawv plaub hau ua cov thickener thiab stabilizer.
Nws txhawb nqa tag nrho kev ntxhib los mos thiab sib xws ntawm cov qauv tshuaj pleev ib ce.
Detergents thiab tshuaj ntxuav:
CMC yog siv los ua thickener thiab stabilizer nyob rau hauv cov kua detergents.
Nws txhim kho cov viscosity ntawm cov tshuaj ntxuav, txhim kho nws cov kev ua tau zoo.
Ceramics thiab Architecture:
CMC yog siv los ua cov ntawv khi thiab kho rheology hauv ceramics.
Nws yog siv rau hauv cov khoom siv hauv tsev los txhim kho cov dej tuav thiab kev tsim kho vaj tse.
Toxicity thiab kev nyab xeeb:
Carboxymethylcellulose feem ntau lees paub tias muaj kev nyab xeeb (GRAS) los ntawm cov koom haum tswj hwm rau kev siv khoom noj thiab tshuaj. Nws yog nontoxic thiab zoo zam, ntxiv txhawb nws txoj kev siv dav.
nyob rau hauv xaus:
Sodium carboxymethyl cellulose yog cov khoom siv polymer nrog ntau yam kev siv hauv ntau yam lag luam. Nws cov khoom tshwj xeeb, suav nrog dej solubility, tus cwj pwm rheological, ionic zog thiab muaj peev xwm ua yeeb yaj kiab, ua rau nws muaj txiaj ntsig zoo hauv cov khoom noj, tshuaj, textiles thiab ntau lwm yam khoom. Raws li kev lag luam txuas ntxiv mus nrhiav cov ntaub ntawv muaj txiaj ntsig zoo thiab muaj txiaj ntsig zoo, sodium carboxymethyl cellulose zoo li yuav nce qhov tseem ceeb, cementing nws txoj hauj lwm ua tus tseem ceeb hauv polymer chemistry thiab cov ntawv thov kev lag luam.
Post lub sij hawm: Jan-09-2024