Cov khoom ntawm Sodium Carboxymethyl Cellulose

Sodium carboxymethyl cellulose (CMC) yog cov dej-soluble, anionic polymer uas yog muab los ntawm cellulose. Nws yog tsim los ntawm cov tshuaj tiv thaiv ntawm cellulose nrog chloroacetic acid thiab sodium hydroxide. CMC muaj ntau yam khoom uas ua rau nws muaj txiaj ntsig zoo rau ntau yam kev lag luam. Nov yog qee qhov tseem ceeb ntawm CMC:

1. Solubility: CMC yog soluble hauv dej, uas ua rau nws yooj yim los lis thiab siv ntau yam kev siv. Nws tuaj yeem yaj hauv qee cov kuab tshuaj organic, xws li ethanol thiab glycerol, nyob ntawm nws qhov kev hloov pauv.
2. Viscosity: CMC yog ib qho viscous polymer uas tuaj yeem tsim cov gels ntawm qhov siab. Lub viscosity ntawm CMC yog cuam tshuam los ntawm ntau yam, xws li qib kev hloov pauv, concentration, pH, kub, thiab electrolyte concentration.
3. Rheology: CMC nthuav tawm tus cwj pwm pseudoplastic, uas txhais tau hais tias nws cov viscosity txo qis nrog nce shear npaum li cas. Cov cuab yeej no muaj txiaj ntsig zoo hauv cov ntawv thov uas xav tau viscosity siab thaum ua tiav, tab sis tsis tshua muaj viscosity xav tau thaum thov.
4. Film-forming zog: CMC tuaj yeem tsim cov yeeb yaj kiab nyias, hloov tau yooj yim thaum qhuav. Cov yeeb yaj kiab no muaj cov khoom thaiv zoo thiab tuaj yeem siv los ua cov txheej txheem rau ntau yam kev siv.
5. Stability: CMC yog ruaj khov nyob rau ntau yam ntawm pH thiab kub tej yam kev mob. Nws kuj tseem tiv taus microbial degradation, uas ua rau nws tsim nyog siv rau hauv cov khoom noj thiab tshuaj siv.
6. Kev tuav dej: CMC muaj peev xwm nqus tau thiab khaws cov dej, uas ua rau nws muaj txiaj ntsig zoo hauv cov ntawv thov uas khaws cov dej tseem ceeb, xws li hauv cov khoom tu tus kheej, tshuaj, thiab khoom noj khoom haus.
7. Emulsion stabilization: CMC tuaj yeem siv los ua kom ruaj khov emulsions, uas yog ib qho tseem ceeb hauv kev tsim khoom ntawm ntau yam khoom, xws li xim, nplaum, thiab coatings.
8. Adhesion: CMC tuaj yeem txhim kho adhesion hauv ntau daim ntawv thov, xws li hauv txheej, xim, thiab nplaum.
9. Suspension Properties: CMC tuaj yeem txhim kho cov khoom raug tshem tawm ntawm ntau yam khoom, xws li hauv kev ncua ntawm pigments, minerals, thiab lwm yam hais.

Hauv kev xaus, Sodium Carboxymethyl Cellulose (CMC) yog ntau yam polymer uas nthuav tawm ntau yam khoom, suav nrog solubility, viscosity, rheology, stability, zaj duab xis-tsim zog, dej tuav, emulsion stabilization, adhesion, thiab ncua kev kawm ntawv. Cov khoom no ua rau CMC muaj txiaj ntsig zoo hauv ntau daim ntawv thov kev lag luam, xws li hauv cov khoom noj, tshuaj, khoom tu tus kheej, thiab tshuaj ntxuav tes, thiab lwm yam.