Uthini umahluko phakathi kweHEC kunye neHEMC?

I-HEC (i-Hydroxyethyl Cellulose) kunye ne-HEMC (i-Hydroxyethyl Methyl Cellulose) zombini ii-polymers iikhompawundi ezivela kwi-cellulose, i-polysaccharide yendalo efumaneka kwizityalo. Zombini zisetyenziswa njengezinto ezityebileyo, izizinzi, kunye nezimiliseli kwiimveliso ezahlukeneyo, kubandakanya ipeyinti kunye neengubo, ukutya, amayeza, izinto zokuthambisa, kunye nokusetyenziswa kwemizi-mveliso.

Umahluko omkhulu phakathi kwe-HEC kunye ne-HEMC kwisakhiwo sabo sekhemikhali. I-HEC i-non-ionic cellulose derivative, ngelixa i-HEMC i-ionic cellulose derivative. I-HEC yenziwe liqela elilodwa le-hydroxyethyl elifakwe kwi-cellulose backbone, ngelixa i-HEMC yenziwe ngamaqela amabini e-hydroxyethyl afakwe kwi-cellulose backbone.

I-HEC yipolymer enyibilikayo emanzini esetyenziswa njenge-arhente etyebisayo kwiimveliso ezahlukeneyo, kubandakanya ipeyinti kunye neengubo, ukutya, amayeza, kunye nezinto zokuthambisa. Isetyenziselwa ukwandisa i-viscosity yemveliso, ukuphucula ukuzinza kwayo, kunye nokubonelela ngokucokisekileyo. Ikwasetyenziswa njenge-emulsifier ukunceda ukugcina izithako ekwahlukaneni.

I-HEMC ikwayipolymer enyibilikayo emanzini esetyenziswa njenge-agent etyebisayo. Isetyenziswa kwiimveliso ezahlukeneyo, kubandakanya ukwakhiwa, ukutya, amayeza, kunye nezinto zokuthambisa. Isetyenziselwa ukwandisa i-viscosity yemveliso, ukuphucula ukuzinza kwayo, kunye nokubonelela ngokucokisekileyo. Ikwasetyenziswa njenge-emulsifier ukunceda ukugcina izithako ekwahlukaneni.

I-HEC isetyenziswa ngokuqhelekileyo kwipeyinti kunye neemveliso zokugqoka, ngelixa i-HEMC isetyenziswa ngokuqhelekileyo kulwakhiwo kunye nezithambiso. I-HEC iphumelele ngakumbi ekwandiseni i-viscosity yemveliso kune-HEMC, kwaye iphinda izinzile kwiisombululo ze-acidic kunye ne-alkaline. I-HEMC iphumelele ngakumbi ekuboneleleni ukuthungwa okugudileyo kwimveliso kune-HEC, kwaye iphinda izinzile kumaqondo aphezulu.

Isishwankathelo, umahluko omkhulu phakathi kwe-HEC kunye ne-HEMC kwisakhiwo sabo samakhemikhali. I-HEC i-non-ionic cellulose derivative, ngelixa i-HEMC i-ionic cellulose derivative. I-HEC isetyenziswa kakhulu kwipeyinti kunye neengubo, kwiimveliso zokucoca, ngelixa i-HEMC isetyenziswa kakhulu kulwakhiwo nakwizithambiso. I-HEC iphumelele ngakumbi ekwandiseni i-viscosity yemveliso, ngelixa i-HEMC isebenza ngakumbi ekuboneleleni ukuthungwa okugudileyo.