Umahluko phakathi kwe-CMC kunye ne-MHEC

I-Carboxymethylcellulose (CMC) kunye ne-Methyl hydroxyethyl cellulose (MHEC) zimbini iintlobo eziqhelekileyo ze-cellulose derivatives ezisetyenziswa ngokubanzi kumashishini ahlukeneyo. Babelana ngezinto ezifanayo kwisakhiwo sabo sekhemikhali kunye neempawu zomzimba, kodwa banakho ukungafani okuphambili okwenza ukuba bafanelekele izicelo ezahlukeneyo. Kwesi sincoko, siza kuphonononga umahluko phakathi kwe-CMC kunye ne-MHEC.

Ulwakhiwo lweMichiza
Zombini i-CMC kunye ne-MHEC ziphuma kwi-cellulose eziyi-polymers ezinyibilikayo emanzini. I-CMC ithathwe kwi-cellulose ngokuyiphendula nge-chloroacetic acid ukwazisa amaqela e-carboxymethyl, ngelixa i-MHEC ivela kwi-cellulose ngokuyiphendula nge-ethylene oxide kunye ne-methyl chloride ukwazisa amaqela e-methyl kunye ne-hydroxyethyl.

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

Viscosity
Zombini i-CMC kunye ne-MHEC zinokutyebisa izisombululo ezinamanzi kwaye zandise i-viscosity. Nangona kunjalo, i-CMC ine-viscosity ephezulu kune-MHEC, kwaye inokwenza i-gel-like consistency xa inyibilika emanzini. Oku kwenza i-CMC ilungele ukusetyenziswa kwizicelo apho ukutyeba okanye i-gelling ifuneka, njengakwishishini lokutya lokwenza iisosi kunye nezinxibo. I-MHEC, ngakolunye uhlangothi, ine-viscosity ephantsi kune-CMC kwaye isetyenziswa ngokuqhelekileyo njenge-thickener okanye i-rheology modifier kwizicelo apho isisombululo esincinci sifunekayo.

pH Uzinzo
I-CMC ngokuqhelekileyo izinzile ngaphezu koluhlu olubanzi lwamaxabiso e-pH kune-MHEC. I-CMC izinzile kuzo zombini iindawo ezineasidi kunye ne-alkaline, eyenza ilungele ukusetyenziswa kushishino lokutya, apho ixabiso le-pH linokwahluka ngokubanzi. Ngokwahlukileyo, i-MHEC izinzile ngakumbi kwi-acidic encinci ukuya kwiindawo ezingathathi hlangothi ze-pH kwaye iyakwazi ukuhlahlela kumaxabiso aphezulu e-pH.

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

Usetyenziso
Zombini i-CMC kunye ne-MHEC 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-MHEC isetyenziswa ngokuqhelekileyo njenge-thickener, i-binder, kunye ne-rheology modifier kwishishini lokwakha kwiimveliso ezifana neepeyinti, iingubo, kunye ne-adhesives. Ikwasetyenziswa kwishishini lamayeza njenge-binder, i-disintegrant, kunye ne-arhente yokukhululwa okuqhubekayo.

Ukuqukumbela, i-CMC kunye ne-MHEC zimbini ze-cellulose derivatives ezabelana ngokufana kwisakhiwo sazo sekhemikhali kunye neempawu ezibonakalayo kodwa zineentlukwano ezihlukeneyo kwi-solubility yazo, i-viscosity, ukuzinza kwe-pH, ukuzinza kweqondo lokushisa kunye nezicelo.