Umehluko phakathi kwe-hydroxyethyl cellulose HEC ne-hydroxypropyl methyl cellulose HPMC

I-Hydroxyethyl cellulose (HEC) kanye ne-hydroxypropyl methyl cellulose (HPMC) yizingqimba ezimbili ezivame ukusetshenziswa kakhulu.Ziyizingxenye zokunamathisela okunwebekayo ezingasetshenziswa ukunikeza ukumelana, ukwandisa i-viscosity, noma ukunikeza i-ductility.Ukwakheka kwawo kwamakhemikhali kuyafana, kodwa kunomehluko osobala.

I-HEC iyi-analogue ye-ethylene-acetate ehlanganisa ikakhulukazi i-formaldehyde, i-methanol ne-sodium hydroxide.I-thixotropic kakhulu futhi ingasetshenziswa njengama-lubricant, ama-ejenti okwelapha okungaphezulu kanye nama-adhesives emishini kagesi neyezimboni.Ama-Hecs angasetshenziswa futhi njengama-thickeners, ama-dispersants nama-scale inhibitors.

I-HPMC enye i-analogue ye-ethylene-acetate, ehlanganisa ikakhulukazi i-methanol, i-sodium hydroxide, ne-carbonate.Ine-viscosity ephezulu, ukunwebeka nokunwebeka, ingasetshenziswa njengezinamatheliso, amapende, izinto zokuhlanza kanye nezithasiselo ze-inki.Ngaphezu kwalokho, ingasetshenziswa futhi ekulungiseleleni ikristalu futhi inozinzo lwesistimu ebushelelezi.
I-Hydroxyethyl cellulose HEC, njenge-surfactant engeyona i-ionic, inalezi zakhiwo ezilandelayo ngaphezu kokuqina, ukumiswa, ukunamathela, ukuntanta, ukwakheka kwefilimu, ukusabalalisa, ukugcinwa kwamanzi kanye nemiphumela ye-colloidal evikelayo:

I-1, i-hydroxyethyl cellulose HEC ingancibilika emanzini ashisayo noma abandayo, izinga lokushisa eliphezulu noma ukubilisa akunciphisi, ukuze ibe nezici eziningi ze-solubility kanye ne-viscosity, kanye nempahla yejeli engashisi;

I-2, i-hydroxyethyl cellulose HEC ngokwayo uhlobo olungezona i-ionic lungahlala nohlu olubanzi lwama-polymers ancibilikayo emanzini, ama-surfactants, ama-salts, iwuhlobo lwe-colloidal thickener equkethe isisombululo se-electrolyte ephezulu;

3, i-hydroxyethyl cellulose HEC umthamo wokugcina amanzi uphakeme kabili kune-methyl cellulose, enomthetho wokugeleza;

4. Ikhono lokuhlakazeka le-hydroxyethyl cellulose HEC liphansi uma liqhathaniswa ne-methyl cellulose eyaziwayo ne-hydroxypropyl methyl cellulose, kodwa ukuvikelwa kwekhono le-colloid kunamandla.

Inhloso: Ngokuvamile isetshenziswa njenge-ejenti yokuqina, i-ejenti evikelayo, i-adhesive, stabilizer kanye nokulungiselela upende we-latex, i-lacquer, uyinki.Izithasiselo ezisetshenziselwa ukugaya uwoyela, ama-gel, amafutha okugcoba, amafutha okugcoba, ama-eye clearers, ama-suppositories namaphilisi, abuye asetshenziswe njengamajeli e-hydrophilic, izinto zamathambo, ukulungiswa kwama-skeleton amalungiselelo okukhululwa okuqhubekayo, futhi angasetshenziswa njengeziqinisi ekudleni.