Emkhakheni wezokwelapha, i-sodium carboxymethylcellulose (CMC) kanye ne-hydroxypropyl methylcellulose (HPMC) yizinto ezimbili ezisetshenziswa kakhulu kwezokwelapha ezinezakhiwo zamakhemikhali nemisebenzi ehlukene.
Isakhiwo samakhemikhali kanye nezakhiwo zawo
I-CMC iyi-cellulose derivative encibilika emanzini etholakala ngokuguqula ingxenye yamaqembu e-hydroxyl e-cellulose ibe amaqembu e-carboxymethyl. Ukuncibilika kwamanzi kanye ne-viscosity ye-CMC kuncike ezingeni layo lokushintsha kanye nesisindo sama-molecule, futhi ivame ukusebenza njenge-thickener enhle kanye ne-alamu yokumisa.
I-HPMC itholakala ngokufaka ingxenye yamaqembu e-hydroxyl e-cellulose esikhundleni samaqembu e-methyl kanye ne-hydroxypropyl. Uma kuqhathaniswa ne-CMC, i-HPMC inokuncibilika okubanzi, ingancibilika emanzini abandayo nashisayo, futhi ikhombisa ukuthamba okuzinzile ngamanani ahlukene e-pH. I-HPMC ivame ukusetshenziswa njenge-film former, adhesive, thickener kanye ne-release agent elawulwayo emithini yemithi.
Inkambu yohlelo lokusebenza
Amaphilisi
Ekukhiqizweni kwamaphilisi, i-CMC isetshenziswa kakhulu njengento ehlukanisayo kanye nenamathelayo. Njengento ehlukanisayo, i-CMC ingamunca amanzi futhi ivuvuke, ngaleyo ndlela ikhuthaze ukuwohloka kwamaphilisi futhi inyuse izinga lokukhululwa kwemithi. Njengento ehlanganisayo, i-CMC ingathuthukisa amandla okusebenza kwamaphilisi.
I-HPMC isetshenziswa kakhulu njenge-ejenti yokukhulula ifilimu elawulwayo kumaphilisi. Ifilimu eyakhiwe yi-HPMC inamandla amakhulu okusebenza kanye nokumelana nokuguguleka, okungavikela umuthi ethonyeni lendawo yangaphandle. Ngesikhathi esifanayo, izakhiwo zokwakha ifilimu ze-HPMC zingasetshenziswa futhi ukulawula izinga lokukhululwa komuthi. Ngokulungisa uhlobo kanye nomthamo we-HPMC, ukukhululwa okuqhubekayo noma umphumela wokukhululwa olawulwayo ungatholakala.
Ama-Capsule
Ekulungiseleleni ama-capsule, i-CMC ayisetshenziswa kakhulu, kuyilapho i-HPMC isetshenziswa kabanzi, ikakhulukazi ekukhiqizweni kwama-capsule emifino. Ama-capsule endabuko enziwe kakhulu nge-gelatin, kodwa ngenxa yenkinga yemithombo yezilwane, i-HPMC isibe yinto ehlukile efanelekile. I-capsule shell eyenziwe nge-HPMC ayigcini nje ngokuba nokuhambisana okuhle kwezinto eziphilayo, kodwa futhi ihlangabezana nezidingo zabantu abadla imifino.
Amalungiselelo oketshezi
Ngenxa yezakhiwo zayo ezinhle kakhulu zokujiya nokumiswa, i-CMC isetshenziswa kabanzi ekulungiseleleni uketshezi njengezixazululo zomlomo, amaconsi amehlo kanye nokulungiswa kwangaphandle. I-CMC ingandisa ukujiya kokulungiswa koketshezi, ngaleyo ndlela ithuthukise ukumiswa nokuqina kwemithi futhi ivimbele ukuchitheka kwemithi.
Ukusetshenziswa kwe-HPMC kumalungiselelo oketshezi kugxile kakhulu kuma-thickeners nama-emulsifiers. I-HPMC ingahlala izinzile ebangeni elibanzi le-pH futhi ingahambisana nemithi ehlukahlukene ngaphandle kokuthinta ukusebenza kahle kwemithi. Ngaphezu kwalokho, izakhiwo zokwakha ifilimu ze-HPMC zisetshenziswa nasekulungiseleleni okwenziwe ngesikhumba, njengomphumela wokuvikela ukwakha ifilimu emathonsini amehlo.
Amalungiselelo okukhululwa alawulwayo
Emalungiselelweni okukhululwa alawulwayo, ukusetshenziswa kwe-HPMC kugqame kakhulu. I-HPMC iyakwazi ukwakha inethiwekhi yejeli, futhi izinga lokukhululwa komuthi lingalawulwa ngokulungisa ukuhlushwa kanye nesakhiwo se-HPMC. Lesi sici sisetshenziswe kabanzi kumaphilisi okukhululwa okuqhubekayo ngomlomo kanye nezifakelo. Ngokuphambene nalokho, i-CMC ayisetshenziswa kakhulu emalungiselelweni okukhululwa alawulwayo, ikakhulukazi ngoba isakhiwo sejeli esakhayo asizinzile njenge-HPMC.
Ukuqina nokuhambisana
I-CMC ayinakho ukuzinza okuhle kumanani ahlukene e-pH futhi ithinteka kalula yizindawo ezisekelwe ku-acid. Ngaphezu kwalokho, i-CMC ayihambisani kahle nezithako ezithile zemithi, okungase kubangele ukuna kwemithi noma ukwehluleka kwayo.
I-HPMC ikhombisa ukuzinza okuhle ebangeni elibanzi le-pH, ayithinteki kalula yi-acid-base, futhi ihambisana kahle kakhulu. I-HPMC ingahambisana nezithako eziningi zemithi ngaphandle kokuthinta ukuzinza nokusebenza kahle komuthi.
Ukuphepha kanye nemithethonqubo
Kokubili i-CMC kanye ne-HPMC kubhekwa njengezinto eziphephile zokwengeza imithi futhi kuvunyelwe ukusetshenziswa ekulungiseleleni imithi yi-pharmacopoeias kanye nezinhlangano ezilawulayo emazweni ahlukahlukene. Kodwa-ke, ngesikhathi sokusetshenziswa, i-CMC ingabangela ukusabela okuthile kokungezwani komzimba noma ukungakhululeki kwesisu, kuyilapho i-HPMC ingavamile ukubangela ukusabela okubi.
I-CMC kanye ne-HPMC zinezinzuzo zazo ekusetshenzisweni kwemithi. I-CMC ithatha indawo ebalulekile ekulungiseleleni uketshezi ngenxa yezakhiwo zayo ezinhle kakhulu zokujiya kanye nokumiswa, kuyilapho i-HPMC isetshenziswe kabanzi kumaphilisi, ama-capsule kanye namalungiselelo okukhululwa okulawulwayo ngenxa yezakhiwo zayo ezinhle kakhulu zokwakha ifilimu kanye nokukhululwa okulawulwayo. Ukukhethwa kwamalungiselelo emithi kufanele kusekelwe ezicini ezithile zemithi kanye nezidingo zokulungiselela, kucatshangelwa ngokuphelele izinzuzo kanye nokungalungi kokubili, futhi kukhethwe isithako esifanelekile kakhulu.
Isikhathi sokuthunyelwe: Julayi-19-2024