Qhov txawv ntawm CMC thiab MC yog dab tsi?

CMC thiab MC yog ob qho tib si cellulose derivatives uas feem ntau siv los ua thickeners, binders, thiab stabilizers nyob rau hauv ntau yam kev siv, nrog rau cov zaub mov, tshuaj, thiab kev kho tus kheej industries. Txawm li cas los xij, muaj qee qhov sib txawv ntawm ob qho uas tsim nyog sau cia.

CMC, los yog Carboxymethyl Cellulose, yog cov dej-soluble polymer uas tau muab los ntawm cellulose. Nws yog tsim los ntawm reacting cellulose nrog sodium chloroacetate thiab hloov qee cov hydroxyl pawg ntawm cellulose rau hauv pawg carboxymethyl. CMC yog siv dav hauv cov khoom noj khoom haus, xws li cov khoom ci, cov khoom siv mis, thiab cov kua ntses, nrog rau cov khoom tu tus kheej thiab cov tshuaj.

MC, los yog Methyl Cellulose, kuj yog dej-soluble polymer uas tau los ntawm cellulose. Nws yog tsim los ntawm reacting cellulose nrog methyl chloride thiab hloov qee cov hydroxyl pawg ntawm cellulose rau hauv methyl ether pawg. MC yog siv los ua cov thickener, binder, thiab emulsifier hauv ntau daim ntawv thov, suav nrog hauv cov khoom noj khoom haus, xws li cov kua ntses, hnav khaub ncaws, thiab cov khoom qab zib khov, thiab hauv cov chaw muag tshuaj thiab cov khoom tu tus kheej.

Ib qho tseem ceeb sib txawv ntawm CMC thiab MC yog lawv cov yam ntxwv solubility. CMC yog yooj yim soluble nyob rau hauv dej tshaj MC, thiab nws muaj peev xwm tsim ib tug ntshiab, viscous tov ntawm tsawg concentrations. MC, ntawm qhov tod tes, feem ntau yuav tsum muaj ntau dua thiab / lossis cua sov kom yaj tag nrho hauv dej, thiab nws cov kev daws teeb meem tuaj yeem ua rau ntau dua opaque lossis pos huab.

Lwm qhov sib txawv yog lawv tus cwj pwm hauv pH sib txawv. CMC muaj kev ruaj khov nyob rau hauv acidic tej yam kev mob thiab muaj peev xwm zam tau ib tug dav pH ntau tshaj li MC, uas yuav zom thiab poob nws thickening zog nyob rau hauv acidic ib puag ncig.

Ob leeg CMC thiab MC yog ntau yam cellulose derivatives uas muaj ntau yam muaj txiaj ntsig zoo rau ntau yam kev siv. Qhov kev xaiv ntawm qhov twg los siv yuav nyob ntawm seb qhov kev xav tau tshwj xeeb ntawm daim ntawv thov thiab cov yam ntxwv xav tau kev ua haujlwm.