Qhov txawv ntawm HEC thiab MHEC yog dab tsi?

HEC thiab MHEC yog ob hom cellulose-raws li polymers cov ntaub ntawv uas yog siv nyob rau hauv ntau yam kev siv, xws li thickeners, stabilizers, thiab emulsifiers nyob rau hauv cov khoom noj khoom haus, nrog rau cov tshuaj thiab tshuaj pleev ib ce.Qhov sib txawv tseem ceeb ntawm ob yog HEC yog hydroxyethyl cellulose, thaum MHEC yog methyl hydroxyethyl cellulose.

HEC yog cov dej-soluble polymer uas tau los ntawm cellulose, ib txwm tshwm sim polysaccharide pom nyob rau hauv cov nroj tsuag.Nws yog tsim los ntawm ib tug linear saw ntawm qabzib molecules nrog ib pawg hydroxyethyl txuas mus rau qhov kawg ntawm txhua molecule.HEC cellulose yog siv los ua cov thickener, stabilizer, thiab emulsifier hauv cov khoom noj, nrog rau cov khoom siv tshuaj thiab tshuaj pleev ib ce.Nws kuj tseem siv rau hauv papermaking thiab luam ntawv, nrog rau kev tsim cov nplaum thiab coatings.

MHEC yog ib daim ntawv hloov kho ntawm HEC cellulose uas cov pab pawg hydroxyethyl hloov nrog methyl pawg.Qhov kev hloov kho no ua rau kom muaj hydrophobicity ntawm cov polymer, ua rau nws tiv taus cov dej-soluble tshuaj.MHEC yog siv nyob rau hauv ntau yam kev siv, nrog rau cov thickener, stabilizer, thiab emulsifier nyob rau hauv cov khoom noj khoom haus, raws li zoo raws li nyob rau hauv cov tshuaj thiab tshuaj pleev ib ce.Nws kuj tseem siv rau hauv papermaking thiab luam ntawv, nrog rau kev tsim cov nplaum thiab coatings.

Hauv cov ntsiab lus, qhov sib txawv tseem ceeb ntawm HEC cellulose thiab MHEC yog HEC yog hydroxyethyl cellulose, thaum MHEC yog methyl hydroxyethyl cellulose.Ob qho khoom siv yog siv ntau yam kev siv, suav nrog cov thickeners, stabilizers, thiab emulsifiers hauv cov khoom noj khoom haus, nrog rau cov khoom siv tshuaj thiab tshuaj pleev ib ce.