Sodium carboxymethyl cellulose

Sodium carboxymethyl cellulose (CMC-Na) yog carboxymethylated derivative ntawm cellulose thiab yog cov pos hniav ionic cellulose tseem ceeb tshaj plaws. Sodium carboxymethyl cellulose feem ntau yog anionic polymer compound npaj los ntawm reacting natural cellulose nrog caustic alkali thiab monochloroacetic acid, nrog ib tug molecular hnyav li ntawm ntau txhiab mus rau lab. CMC-Na yog dawb fibrous los yog granular hmoov, tsis muaj ntxhiab, tasteless, hygroscopic, yooj yim rau disperse nyob rau hauv dej los tsim ib tug pob tshab colloidal tov.

1. Cov ntaub ntawv yooj yim

Lub npe txawv teb chaws

Carboxymethylcellulose sodium

aka

Carboxymethyl ether cellulose sodium ntsev, lwm.

Qeb

compound

molecular formula

C8H16NaO8

CAS

9004-32-4

2. Lub cev thiab tshuaj muaj zog

CMC-Na luv luv, dawb mus rau daj daj hmoov, granular los yog fibrous tshuaj, muaj zog hygroscopicity, yooj yim soluble nyob rau hauv dej, thiab cov tshuaj yog siab viscosity kua thaum nws yog nruab nrab los yog alkaline. Stable rau cov tshuaj, lub teeb thiab kub. Txawm li cas los xij, cov cua sov yog txwv rau 80 ° C, thiab yog tias cua sov ntev dua 80 ° C, viscosity yuav txo qis thiab nws yuav tsis muaj dej nyob hauv dej. Nws tus txheeb ze ntom ntom yog 1.60, thiab tus txheeb ze ntawm flakes yog 1.59. Lub refractive index yog 1.515. Nws hloov xim av thaum rhuab mus rau 190-205 ° C, thiab carbonizes thaum rhuab mus rau 235-248 ° C. Nws solubility nyob rau hauv dej nyob ntawm qhov degree ntawm kev hloov. Insoluble hauv acid thiab cawv, tsis muaj nag lossis daus hauv cov ntsev. Nws tsis yooj yim rau ferment, muaj zog emulsifying lub zog rau roj thiab siv quav ciab, thiab tuaj yeem khaws cia rau lub sijhawm ntev.

3. Daim ntawv thov tseem ceeb

Siv dav hauv kev lag luam roj khawb av nkos kho tus neeg saib xyuas, cov tshuaj tua hluavtaws, cov tshuaj ntxuav tes organic, textile printing thiab dyeing sizing tus neeg saib xyuas, dej-soluble colloidal tackifier rau cov khoom siv tshuaj txhua hnub, tackifier thiab emulsifier rau kev lag luam tshuaj, thickener rau zaub mov kev lag luam Thickener, nplaum rau ceramic kev lag luam, kev lag luam paste, sizing tus neeg sawv cev rau kev lag luam ntawv, thiab lwm yam. Nws yog siv los ua flocculant hauv kev kho dej, feem ntau yog siv hauv cov dej khib nyiab sludge kho, uas tuaj yeem nce cov ntsiab lus ntawm lim ncuav mog qab zib.

Sodium carboxymethyl cellulose kuj yog ib hom thickener. Vim nws cov khoom ua haujlwm zoo, nws tau siv dav hauv kev lag luam khoom noj khoom haus, thiab nws kuj tau txhawb kev loj hlob sai thiab noj qab nyob zoo ntawm kev lag luam khoom noj rau qee yam. Piv txwv li, vim nws cov nyhuv thickening thiab emulsifying, nws tuaj yeem siv los tswj cov dej qab zib yogurt thiab ua kom cov viscosity ntawm yogurt system; vim nws muaj qee yam hydrophilicity thiab rehydration zog, nws tuaj yeem siv los txhim kho kev noj cov nplej zom xws li qhob cij thiab steamed qhob cij. zoo, ncua lub txee lub neej ntawm cov khoom pasta, thiab txhim kho saj; vim nws muaj cov nyhuv gel, nws yog qhov tsim nyog rau kev tsim cov gel zoo dua hauv cov zaub mov, yog li nws tuaj yeem siv los ua jelly thiab jam; Nws tseem tuaj yeem siv los ua cov yeeb yaj kiab uas siv tau Cov khoom siv sib xyaw nrog lwm cov thickeners thiab siv rau saum npoo ntawm qee cov khoom noj, uas tuaj yeem khaws cov zaub mov tshiab kom zoo tshaj plaws, thiab vim tias nws yog cov khoom siv tau, nws yuav tsis ua rau muaj kev phom sij. cuam ​​tshuam rau tib neeg kev noj qab haus huv. Yog li ntawd, zaub mov-qib CMC-Na, raws li cov khoom noj khoom haus zoo tshaj plaws, yog siv dav hauv kev tsim khoom noj hauv kev lag luam khoom noj.