Ijeli ye-HPMC

I-Hydroxypropyl methylcellulose (HPMC) iwuhlobo lwe-cellulose ether esetshenziswa kwizinhlelo zokusebenza ezihlukene, okuhlanganisa njenge-ejenti egelezayo, i-thickener, emulsifier, stabilizer, ne-ejenti elengayo. Kuyi-polymer encibilika emanzini etholakala ku-cellulose, futhi ivamise ukusetshenziswa emikhiqizweni yokudla, emithini yemithi kanye neyezimonyo. I-HPMC iphinde isetshenziselwe ukwenza amajeli, okuyizinhlelo eziqinile kancane ezakhiwe uketshezi oluhlakazwe ku-matrix eqinile. Amajeli e-HPMC asetshenziswa ekusetshenzisweni okuhlukahlukene, okuhlanganisa ukulethwa kwezidakamizwa, izimonyo, nemikhiqizo yokudla.

Amajeli e-HPMC akhiwa lapho i-HPMC incibilika ku-solvent, njengamanzi. Njengoba ikhambi liphola, ama-molecule e-HPMC akha inethiwekhi evalela isincibilikisi, enze ijeli. Izici zejeli zincike ekugxilweni kwe-HPMC, uhlobo lwe-solvent, nezinga lokushisa. Amajeli akhiwe kusukela ku-HPMC ngokuvamile abonisa ngale futhi anokuhambisana okufana nojeli.

Amajeli e-HPMC angasetshenziswa ezinhlelweni ezahlukahlukene. Embonini yezemithi, amajeli e-HPMC asetshenziselwa ukuletha izidakamizwa emzimbeni. Ijeli ingakhiwa ukuze ikhulule umuthi isikhathi eside, okuvumela ukulethwa kwezidakamizwa okuqhubekayo. Amajeli e-HPMC nawo asetshenziswa kuzimonyo, njengamafutha okugcoba nokhilimu, ukuze anikeze ukuthungwa okubushelelezi, okunokhilimu. Emikhiqizweni yokudla, amajeli e-HPMC asetshenziswa njengeziqinisi neziqinisi.

Amajeli e-HPMC anezinzuzo ezimbalwa ngaphezu kwamanye ama-ejenti ajelling. Azinabo ubuthi, azicasuli futhi ziyabola. Futhi kulula ukuzisebenzisa futhi zingakhiwa ukuze zihlangabezane nezidingo ezithile. Amajeli e-HPMC nawo azinzile phezu kwebanga elibanzi lamazinga okushisa namazinga e-pH.

Naphezu kwalezi zinzuzo, kukhona ezinye izithiyo ekusebenziseni HPMC gels. Ayabiza kakhulu kunamanye ama-ejelling, futhi kungaba nzima ukuwancibilikisa kwezinye izincibilikisi. Ukwengeza, amajeli e-HPMC awanamandla njengamanye ama-ejeli, futhi angathambekela ku-syneresis (ukuhlukaniswa kwejeli ibe yisigaba esiwuketshezi nesiqinile).

Sekukonke, amajeli e-HPMC ayithuluzi eliwusizo lezinhlelo zokusebenza ezahlukahlukene. Azinabo ubuthi, azicunuli, futhi ziyabola, futhi zingakhiwa ukuze zihlangabezane nezidingo ezithile. Kodwa-ke, ayabiza kakhulu kunamanye ama-ejelling, futhi kungaba nzima ukuwancibilikisa kwezinye izincibilikisi. Ukwengeza, azinamandla njengamanye ama-gelling agents, futhi angakwazi ukuthambekela ku-syneresis.