Puas yog Carboxymethyl cellulose lub thickener?

Carboxymethyl cellulose (CMC) yog ib qho tseem ceeb cov khoom siv polymer hloov tshiab, tshuaj, textile, roj drilling thiab lwm daim teb. Hauv kev lag luam khoom noj khoom haus, CMC tau siv dav hauv ntau cov khoom noj khoom haus vim nws cov zaub mov zoo heev, sib zog, kev ua yeeb yaj kiab, dej ua ke.

Cov Khoom Yooj Yim ntawm Carboxymethyl Cellulose
CMC yog anionic dej-soluble polymer compound tsim los ntawm kev hloov tshuaj lom neeg ntawm ntuj cellulose. Cov carboxylmethyl (-ch2Cooh) pawg ntawm nws cov molecular tuaj yeem muab nws zoo solubility hauv dej thiab cim lub cev thiab tshuaj lom neeg. CMC feem ntau muaj nyob rau hauv daim ntawv ntawm nws sodium spev, namely sodium carboxymethyl cellulose (uas tuaj yeem tsim lub kuab cellOlocous hauv dej.

Mechanism ntawm kev ua ntawm cmc ua cov tuab tuab
Nyob rau hauv kev ua zaub mov noj, cov haujlwm tseem ceeb ntawm cov tuab yog txhawm rau txhim kho cov zaub mov, kev ruaj khov thiab hloov kho cov theem ntawm cov khoom noj. Qhov laj thawj yog vim li cas cmc tuaj yeem ua lub luag haujlwm tuab yog vim nws tuaj yeem yaj tawm sai sai hauv dej siab. Thaum CMC yog yaj hauv dej, cov molecular chains nthuav dav thiab tso nrog txhua lwm yam los ua cov dej Molecules, yog li nce lub viscosity ntawm lub system.

Piv nrog rau lwm cov nyhuv thickeners, cov nyhuv tuab ntawm cov pawg, suav nrog cov kev daws teeb meem), ua rau lwm cov kev daws teeb meem, thiab lwm yam hauv cov zaub mov. Los ntawm kho cov kab no, cov nyhuv tuab ntawm cmc hauv cov zaub mov tuaj yeem tswj tau los hloov kho nws cov zaub mov sib txawv.

Daim ntawv thov CMC hauv cov khoom noj
Vim nws cov khoom siv thickening zoo, CMC tau siv dav hauv ntau yam khoom noj. Piv txwv li, hauv cov khoom lag luam xws li cov khoom lag luam khov, Jam, cov khoom noj siv mis, CMC tsis tuaj yeem tsuas yog nce cov tshuaj muaj dej khov, txhim kho cov qauv thiab saj ntawm cov khoom. Tsis tas li ntawd, CMC tseem tuaj yeem txhim kho cov dej tuav lub peev xwm ntawm cov khob noom cookie hauv cov khoom noj thiab txuas lub txee lub neej.

Hauv cov khoom noj siv mis thiab dej haus, cmc pab tswj cov emulsions thiab nag lossis daus, yog li ua kom muaj kev sib txawv thiab saj ntawm cov khoom. Hauv cov kua ntses thiab jam, kev siv CMC tuaj yeem txhim kho kev sib kis ntawm cov khoom lag luam, muab nws ua qauv zoo sib xws thiab du.

Kev Nyab Xeeb thiab Kev Cai ntawm CMC
Raws li cov zaub mov ntxiv, kev nyab xeeb ntawm cmc tau pom dav. Lub Koom Haum Kws Muaj Txuj Ci (Jecfa) ntawm Lub Koom Haum Ntiaj Teb Kev Noj Qab Haus Huv (Gas) tau hais tias yog "feem ntau lees paub tias yog" feem ntau lees paub tias muaj kev nyab xeeb rau tib neeg lub cev ntawm kev siv ib txwm muaj.

Hauv cov teb chaws sib txawv thiab cov cheeb tsam, kev siv CMC tseem raug rau kev txwv cov kev txwv. Piv txwv li, hauv Suav teb, "tus qauv rau kev siv cov khoom noj khoom haus khoom noj khoom haus" (GB 2760) cov khoom noj kom meej meej ntawm kev siv thiab ntau npaum li cas noj ntawm CMC. Feem ntau, tus nqi ntawm CMC siv yuav tsum tau tswj tsis pub dhau ntawm cov khoom noj kom paub meej txog kev nyab xeeb thiab ruaj khov ntawm cov zaub mov.

Raws li ib qho kev ua tuab ntau yam siv cov tuab, carboxymethyl cellulose nyob rau txoj hauj lwm tseem ceeb hauv kev lag luam khoom noj vim nws lub cev nqaij daim tawv thiab tshuaj lom neeg. Nws tsis tuaj yeem ua rau muaj kev cuam tshuam zoo ntawm cov zaub mov, tab sis kuj tseem txhim kho kev ntxhib los mos, saj thiab ruaj khov ntawm cov zaub mov. Ib qho ntxiv, raws li kev nyab xeeb cov zaub mov ntxiv, cmc tau siv dav hauv zaub mov ntau thoob plaws ntiaj teb. Nrog rau kev txhim kho kev lag luam khoom noj khoom haus, daim ntawv thov kev lag luam ntawm CMC yuav yog dav dav thiab nws yuav ua lub luag haujlwm zoo dua qub hauv kev txhim kho cov zaub mov zoo thiab lub neej sib txuas.