Textile -qib CMC

Sodium carboxymethyl cellulose yog tsim los ntawm reacting alkali cellulose nrog chloroacetic acid los yog nws cov ntsev ntsev. Cov tshuaj tiv thaiv etherification feem ntau tshwm sim ntawm thawj pawg hydroxyl ntawm 6th carbon atom, thiab qee qhov kev cuam tshuam kuj tshwm sim ntawm pawg hydroxyl ntawm 2nd thiab 3rd txoj haujlwm. Cov kev sim qhia tau hais tias thaum cov khoom lag luam nrog kev hloov pauv ntawm 0.91 tau txais, 48.6% ntawm pawg hydroxyl ntawm 6 txoj haujlwm tau txais cov tshuaj tiv thaiv, 24.8% ntawm pawg hydroxyl ntawm 2 txoj haujlwm tau txais cov tshuaj tiv thaiv, thiab tsuas yog 15.4% ntawm pawg hydroxyl ntawm 3rd txoj haujlwm tau txais cov tshuaj tiv thaiv.

CMC yog siv los ua cov txheej txheem luam ntawv ntawm kev hloov pauv qis ntawm sodium carboxymethyl cellulose, uas tuaj yeem siv rau ob -theem luam ntawv nrog txo cov dyes, thiab rau dispersing dyes ntawm polyester, tab sis tsis haum rau hlau complex dyes thiab cationic dyes, txwv tsis pub nws yuav coagulate. Sodium carboxymethyl cellulose nrog kev hloov pauv qib siab dua 1.5 tuaj yeem siv los hloov sodium alginate rau reactive dye printing. Thaum siv CMC nrog rau qib polymerization ntawm 2040 thiab kev hloov pauv qib ntawm 1.46 rau cov tshuaj pleev xim reactive, nws cov xim vividness, xim ceev, thiab xav tias yog tib yam li sodium alginate. Cov muab tshuaj ntawm sodium carboxymethyl cellulose muaj qhov sib xws, thiab piv nrog cov hmoov txhuv nplej siab, cov yeeb yaj kiab tsim tom qab ziab tau zoo dua toughness thiab yooj yim dua los ntxuav.

CMC yog siv los ua ib qho tshuaj reactive thaum qhov kev ruaj ntseg sib txawv raws li cov pH sib txawv los yog cov ntsev sib txawv. Cov pab pawg carboxyl tau txais ntau qib sib txawv ntawm ionization, thiab qhov kev ncab ntawm sodium carboxymethyl cellulose molecule kuj txawv, yog li cov viscosity ntawm paste kuj hloov, uas yog qhov tseem ceeb rau cov khoom muaj viscosity siab. Methyl cellulose yog ib yam khoom tau los ntawm etherification ntawm cellulose. Kev hloov pauv qib ntawm cov khoom lag luam yog 1.6 txog 2.0, nws yog soluble hauv dej txias, thiab nws cov khoom ruaj khov nyob rau hauv pH ntau ntawm 3 txog 12. Cua sov lossis ntxiv ntsev tuaj yeem ua rau methyl cellulose rau gel. Tshwj xeeb tshaj yog nyob rau hauv lub caij ntuj sov huab cua, lub pulp chav tsev yog kub, thiab CMC muab tshuaj txhuam ua thiab khaws cia rau ob peb teev yuav muaj ib tug tseem ceeb txo nyob rau hauv viscosity.