Umahluko phakathi kwe-HEC kunye ne-HPMC

I-HEC (i-Hydroxyethyl Cellulose) kunye ne-HPMC (i-Hydroxypropyl Methylcellulose) zombini zisetyenziswa ngokubanzi kushishino lwepeyinti njengama-thickeners kunye ne-rheology modifiers. Ngelixa babelana ngezinto ezifanayo, kukho umahluko ophambili kwiipropathi zabo kunye nezicelo.

Omnye umahluko omkhulu phakathi kwe-HEC kunye ne-HPMC ilele kubume bemichiza yabo. I-HEC ithathwe kwi-cellulose ngokongezwa kwamaqela e-ethylene oxide, ngelixa i-HPMC idityaniswe kwi-cellulose ngokongezwa kwepropylene oxide kunye namaqela e-methyl. Olu lwahluko lwesakhiwo lubangela ukungafani ekusebenzeni kwabo kwiindlela zepeyinti.

Ngokumalunga nesicelo, i-HEC iyaziwa ngokugqwesileyo kokugcinwa kwamanzi kunye neempawu zokuqina, okwenza ukuba ilungele ukusetyenziswa kwiipeyinti ezisekelwe emanzini. Inceda ukuphucula i-viscosity kunye nokuzinza kwepeyinti, okuvumela ukusetyenziswa okungcono kunye nokugubungela. Kwelinye icala, i-HPMC ibonelela ngezakhono ezifanayo zokujiya kunye nokugcina amanzi, kodwa ikwabonelela ngokuphucuka kokumelana ne-sag kunye nexesha elingcono lokuvula kwimixube yepeyinti. Oku kwenza kube yinto ekhethiweyo yokusetyenziswa kwiingubo eziphezulu zokusebenza kunye nepeyinti ye-latex.

Omnye umahluko obalulekileyo phakathi kwe-HEC kunye ne-HPMC kukuhambelana kwazo nezinye izongezo zepeyinti. I-HEC inomdla ngakumbi kwi-pH kunye ne-electrolytes, enokunciphisa ukuhambelana kwayo kunye nezongezo ezithile kunye nokuqulunqwa. Ngokwahlukileyo, i-HPMC ibonisa ukuhambelana okungcono kunye noluhlu olubanzi lwezongezo, iyenza ibe lukhetho oluguquguqukayo kwiinkqubo ezahlukeneyo zepeyinti.

Ngaphaya koko, i-HPMC yaziwa ngeempawu zayo zokwenza ifilim, ezinokuthi zibe negalelo ekomeleleni kukonke kunye nokusebenza kwefilimu yepeyinti. Oku kuyenza ibe sisithako esibalulekileyo kwiipeyinti zangaphandle kunye neengubo apho ukumelana nemozulu kunye nokukhuselwa kwexesha elide kubalulekile.

Ukuqukumbela, ngelixa zombini i-HEC kunye ne-HPMC zibonelela ngokuqina kunye neenzuzo ze-rheological ekubunjweni kwepeyinti, ukungafani kwazo kwisakhiwo sekhemikhali, ukusebenza, kunye nokuhambelana kubenza bafaneleke kwiintlobo ezahlukeneyo zepeyinti kunye neengubo. Ukuqonda le yantlukwano kubalulekile kubaqulunqi ukuba bakhethe esona songezo sifanelekileyo ukufezekisa iimpawu zepeyinti ezifunwayo kunye nokusebenza.