Umahluko phakathi kwe-CMC kunye ne-HEMC

I-Carboxymethylcellulose (CMC) kunye ne-Hydroxyethyl methylcellulose (HEMC) zimbini iintlobo ze-cellulose derivatives eziqhelekileyo ezisetyenziswa kumashishini ahlukeneyo, kubandakanywa ukutya kunye namashishini amayeza. Zombini i-CMC kunye ne-HEMC ziyi-polymers ezinyibilikayo zamanzi eziphuma kwi-cellulose, kodwa zineepropati ezahlukeneyo kwaye zisetyenziselwa izicelo ezahlukeneyo. Kwesi sincoko, siza kuphonononga umahluko phakathi kwe-CMC kunye ne-HEMC.

Ulwakhiwo lweMichiza
Ubume beekhemikhali ze-CMC kunye ne-HEMC ziyafana, njengoko zombini ziphuma kwi-cellulose. I-CMC yenziwe ngokuphendula i-cellulose kunye ne-chloroacetic acid ukuvelisa amaqela e-carboxymethyl, ngelixa i-HEMC yenziwa ngokuphendula i-cellulose nge-ethylene oxide kunye ne-methyl chloride ukuvelisa i-hydroxyethyl kunye namaqela e-methyl.

Ukunyibilika
Omnye umahluko omkhulu phakathi kwe-CMC kunye ne-HEMC kukunyibilika kwazo emanzini. I-CMC inyibilika kakhulu emanzini kwaye inokwenza isisombululo esicacileyo, esibonakalayo nakwindawo ezisezantsi. Ngokwahlukileyo, i-HEMC ayinyibiliki kancinci emanzini kune-CMC kwaye ngokuqhelekileyo idinga ukusetyenziswa kwe-solvent, njenge-ethanol okanye i-isopropyl alcohol, ukunyibilika ngokupheleleyo.

Viscosity
Omnye umahluko obalulekileyo phakathi kwe-CMC kunye ne-HEMC yi-viscosity yabo. I-CMC ine-viscous ephezulu kwaye inokwenza isisombululo esifana nejeli xa inyibilikiswa emanzini. Oku kwenza i-CMC ilungele ukusetyenziswa kwizicelo apho ukutyeba okanye i-gelling ifuneka, njengakwishishini lokutya lokwenza iisosi kunye nezinxibo. Ngokwahlukileyo, i-HEMC ine-viscosity ephantsi kune-CMC kwaye isetyenziswa ngokuqhelekileyo njenge-thickener okanye i-rheology modifier kwizicelo apho isisombululo esincinci sifunekayo.

pH Uzinzo
I-CMC izinzile ngokubanzi kuluhlu olubanzi lwamaxabiso e-pH kune-HEMC. I-CMC izinzile kuzo zombini iindawo ezineasidi kunye ne-alkaline, eyenza ilungele ukusetyenziswa kushishino lokutya, apho ixabiso le-pH linokwahluka ngokubanzi. Ngokwahlukileyo, i-HEMC izinzile ngakumbi kwi-acidic kancinane ukuya kwindawo engathathi hlangothi ye-pH kwaye inokwephula kumaxabiso aphezulu e-pH.

Uzinzo lobushushu
Zombini i-CMC kunye ne-HEMC zizinzile kuluhlu olubanzi lwamaqondo obushushu, kodwa kukho ukungafani ekuzinzeni kwabo kwe-thermal. I-CMC izinzile ngakumbi nge-thermal kune-HEMC kwaye inokugcina iimpawu zayo kumaqondo obushushu aphezulu. Oku kwenza i-CMC ilungele ukusetyenziswa kwizicelo apho amaqondo obushushu aphezulu abandakanyekayo, njengokuveliswa kwezinto ezibhakiweyo. I-HEMC, ngakolunye uhlangothi, inozinzo oluphantsi lwe-thermal kune-CMC kwaye inokuphuka kumaqondo aphezulu aphezulu.

Usetyenziso
Zombini i-CMC kunye ne-HEMC zisetyenziswa kwiintlobo ngeentlobo zezicelo kuwo wonke amashishini ahlukeneyo. I-CMC iqhele ukusetyenziswa njenge-thickener, i-stabilizer, kunye ne-emulsifier kushishino lokutya kwiimveliso ezinje nge-ayisikrimu, iisosi, kunye nezinxibo. Ikwasetyenziswa nakwishishini loxubo-mayeza njenge-binder, i-disintegrant, kunye ne-arhente yokumisa. I-HEMC idla ngokusetyenziswa njenge-thickener, binder, kunye ne-rheology modifier kushishino lolwakhiwo lweemveliso ezinje ngeepeyinti, iingubo kunye nezinto zokuncamathelisa. Ikwasetyenziswa kwishishini lamayeza njenge-binder, i-disintegrant, kunye ne-arhente yokukhululwa okuqhubekayo.