CMC yog cov ntawv luv ntawm carboxymethyl cellulose. Nws yog ib yam khoom ntuj tsim los ntawm cellulose. Nws muaj ntau yam zoo uas cov roj hmab ntuj thiab cov nplej slurry tsis muaj. Nws yog soluble hauv dej thiab tuaj yeem ua kom cov viscosity ntawm kev daws. Nws muaj cov haujlwm ntawm thickening, dispersing, emulsifying, suspending, stabilizing thiab tiv thaiv colloid.
Cov tshuaj tiv thaiv tseem ceeb ntawm CMC yog cov tshuaj tiv thaiv alkalization ntawm cellulose thiab alkali rau alkali cellulose thiab etherification cov tshuaj tiv thaiv ntawm alkali cellulose thiab monochloroacetic acid.
Alkalization: [C6H7O2 (OH) 3] n plus nNaOH → [C6H7O2 (OH) 2ONa] n plus nH2O
Etherification: [C6H7O2 (OH) 2ONa] n plus nClCH2COONA → [C6H7O2 (OH) 2OCH2COONA] n plus nNaCl
Los ntawm cov tshuaj tiv thaiv saum toj no, kuv xav tias tus tswv yuav tsum nkag siab tias sodium carboxymethyl cellulose tsis tau qhia los ntawm carboxymethyl cellulose. Qhov tseeb, (sodium) alkali cellulose tau tsim nyob rau hauv cov txheej txheem ntawm alkalization, thiab tom qab ntawd nws yog synthesized los ntawm kev qhia carboxymethyl pawg.
Lawv yeej yog tib yam.
