I-HEMC Hydroxyethyl Methyl Cellulose

IHydroxyethyl methyl cellulose (HEMC) iyi-polymer encibilika emanzini evame ukusetshenziswa ezimbonini ezahlukahlukene, kufaka phakathi izimboni zemithi, zokudla, nezokwakha. I-HEMC itholakala ku-cellulose futhi iguqulwa ngokungezwa kokubili kwamaqembu e-methyl kanye ne-hydroxyethyl, okuyinikeza izakhiwo nezinzuzo eziyingqayizivele.

Embonini yezemithi, i-HEMC ivamise ukusetshenziswa njengesamukeli ekwakhiweni kwamathebulethi, ukwakheka kwezihloko, kanye namalungiselelo e-ophthalmic. I-HEMC yaziwa ngezakhiwo zayo ezinhle kakhulu zokwakha ifilimu nokujiya, okwenza kube ukukhetha okuhle kulezi zinhlelo zokusebenza.

Enye yezinzuzo eziyinhloko zokusebenzisa i-HEMC ekwakhekeni kwemithi yikhono layo lokuthuthukisa i-viscosity nokuzinza kokwakheka. I-HEMC inesisindo samangqamuzana aphezulu kanye nezinga eliphakeme lokushintshwa, elinikeza izakhiwo ezinhle kakhulu zokuqina. Ingase futhi yakhe ifilimu ezinzile futhi ehlala isikhathi eside ebusweni besikhumba noma iso, esiza ukugcina isithako semithi esebenzayo (API) sithintana nendawo ehlosiwe isikhathi eside. Ukwengeza, ifilimu inganikeza umgoqo wokuzivikela, ongasiza ekunciphiseni ukucasuka futhi uthuthukise ukunethezeka kwesiguli.

Enye inzuzo ye-HEMC yikhono layo lokuthuthukisa ukunyibilika nokutholakala kwe-bioavailability kwama-API angancibiliki kahle. I-HEMC ingenza ungqimba olufana nejeli ebusweni bethebhulethi noma ukwakheka kwesihloko, okungasiza ekwandiseni indawo etholakalayo yokuhlakazwa kanye nokuthuthukisa izinga nezinga lokukhululwa kwezidakamizwa. Lokhu kungaholela ekusebenzeni okuthuthukisiwe kanye nemiphumela yokwelapha.

I-HEMC yaziwa nangokuthi i-biocompatibility yayo nokuphepha. Kuyinto engenabuthi futhi engacasuli esetshenziswe kabanzi ekwakhiweni kwemithi iminyaka eminingi. Lokhu kukwenza kube ukukhetha okuhle ezinhlotsheni eziningi zemithi, okuhlanganisa nalezo ezizosetshenziswa izinhlobonhlobo zeziguli, okuhlanganisa lezo ezinesikhumba esibucayi noma ezinye izimo zempilo ezicashile.

Embonini yokudla, i-HEMC ivamise ukusetshenziswa njenge-ejenti yokuqina neyokuqinisa emikhiqizweni ehlukahlukene yokudla. Isetshenziselwa ukugqoka isaladi, amasoso, u-ayisikhilimu, nokunye ukudla ukuze kuthuthukiswe ukuthungwa, i-viscosity, nokuzinza. I-HEMC iphinde isetshenziswe embonini yezokwakha njenge-thickener kanye ne-binder emikhiqizweni esekwe usimende, njengezinamatheliso zamathayili, ama-grouts, nama-mortars.

Kafushane, i-HEMC iyi-polymer encibilika emanzini esetshenziswa kakhulu enezinhlelo eziningi ezimbonini zemithi, zokudla, nezokwakha. Izakhiwo zayo zokwakheka kwefilimu nokujiya, ikhono lokuthuthukisa ukunyibilika nokutholakala kwe-bioavailability, kanye ne-biocompatibility kuyenza ibe ukukhetha okuhle ezinhlelweni eziningi. Kodwa-ke, abaqulunqi kufanele bazi ngemikhawulo yayo futhi baqinisekise ukuthi ilufanelekela uhlelo oluthile ngaphambi kokuluhlanganisa ekwakhiweni.