Umehluko Phakathi kwe-CMC ne-MHEC

I-Carboxymethylcellulose (CMC) kanye ne-Methyl hydroxyethyl cellulose (MHEC) yizinhlobo ezimbili ezivamile zokuphuma kwe-cellulose ezisetshenziswa kabanzi ezimbonini ezihlukahlukene. Babelana ngokufana okuthile esakhiweni sabo samakhemikhali nasezimpahleni zomzimba, kodwa futhi banomehluko obalulekile obenza bafanelekele izinhlelo zokusebenza ezahlukene. Kulesi sihloko, sizohlola umehluko phakathi kwe-CMC ne-MHEC.

Isakhiwo Samakhemikhali
Kokubili i-CMC kanye ne-MHEC yizinto eziphuma ku-cellulose ezingama-polymers ancibilika emanzini. I-CMC itholakala ku-cellulose ngokuyiphendula nge-chloroacetic acid ukuze yethule amaqembu e-carboxymethyl, kuyilapho i-MHEC itholakala ku-cellulose ngokuyiphendula nge-ethylene oxide ne-methyl chloride ukwethula amaqembu e-methyl kanye ne-hydroxyethyl.

Ukuncibilika
Omunye umehluko omkhulu phakathi kwe-CMC ne-MHEC ukuncibilika kwawo emanzini. I-CMC incibilika kakhulu emanzini futhi ingakha isisombululo esicacile, esibonakalayo ngisho nasezindaweni eziphansi. Ngokuphambene, i-MHEC ayincibiliki kancane emanzini kune-CMC futhi ngokuvamile idinga ukusetshenziswa kwe-solvent, njenge-ethanol noma i-isopropyl alcohol, ukuze incibilike ngokuphelele.

I-Viscosity
Kokubili i-CMC ne-MHEC ingajiya izixazululo ezinamanzi futhi ikhulise i-viscosity. Kodwa-ke, i-CMC ine-viscosity ephakeme kune-MHEC, futhi ingakha ukufana okufana nejeli lapho incibilika emanzini. Lokhu kwenza i-CMC ilungele ukusetshenziswa ezinhlelweni lapho kudingeka khona ukujiya noma ukugaywa, njengasembonini yokudla yokwenza amasoso nezingubo zokugqoka. I-MHEC, ngakolunye uhlangothi, ine-viscosity ephansi kune-CMC futhi ngokuvamile isetshenziswa njenge-thickener noma i-rheology modifier ezinhlelweni lapho kudingeka khona isixazululo se-viscous esincane.

Ukuqina kwe-pH
I-CMC ngokuvamile izinzile ngaphezu kwebanga elibanzi lamanani e-pH kune-MHEC. I-CMC izinzile kuzo zombili izindawo ezine-acidic kanye ne-alkaline, okuyenza ilungele ukusetshenziswa embonini yokudla, lapho amanani e-pH angahluka kakhulu. Ngokuphambene, i-MHEC izinzile kakhulu ezindaweni ezine-acidic kancane ukuya endaweni engathathi hlangothi ye-pH futhi ingadiliza ngamavelu e-pH aphezulu.

Ukuqina Kwezinga Lokushisa
Kokubili i-CMC ne-MHEC zizinzile phezu kwebanga elibanzi lokushisa, kodwa kunomehluko ekuzinzeni kwazo okushisayo. I-CMC izinzile ngokwe-thermal kune-MHEC futhi ingagcina izakhiwo zayo kumazinga okushisa aphezulu. Lokhu kwenza i-CMC ilungele ukusetshenziswa ezinhlelweni lapho amazinga okushisa aphezulu ebandakanyeka, njengasekukhiqizweni kwezinto ezibhakwayo. I-MHEC, ngakolunye uhlangothi, inokuqina okushisayo okuphansi kune-CMC futhi ingadiliza emazingeni okushisa aphezulu.

Izinhlelo zokusebenza
Kokubili i-CMC ne-MHEC zisetshenziswa kwizicelo ezahlukahlukene kuzo zonke izimboni ezahlukahlukene. I-CMC ivamise ukusetshenziswa njenge-thickener, stabilizer, kanye ne-emulsifier embonini yokudla emikhiqizweni efana no-ayisikhilimu, amasoso, nezingubo zokugqoka. Ibuye isetshenziswe embonini yezemithi njenge-binder, disintegrant, kanye ne-ejenti yokumisa. I-MHEC ivamise ukusetshenziswa njenge-thickener, binder, kanye ne-rheology modifier embonini yezokwakha emikhiqizweni efana namapende, okokunamathela, nokunamathiswa. Iphinde isetshenziswe embonini yezemithi njenge-binder, i-disintegrant, kanye ne-ejenti yokukhishwa okuqhubekayo.

Sengiphetha, i-CMC ne-MHEC yizinto ezimbili eziphuma ku-cellulose ezabelana ngokufana okuthile esakhiweni sazo samakhemikhali nezakhiwo ezingokomzimba kodwa ezinomehluko ohlukile ekuncibilikeni kwazo, i-viscosity, ukuzinza kwe-pH, ukuzinza kwezinga lokushisa, kanye nezinhlelo zokusebenza.