izindaba

I-PolyvinylpyrrolidoneIsakhiwo samakhemikhali (PVP) siqukethe indandatho ye-pyrrolidone, enikeza ukuncibilika kwamanzi okuhle kakhulu, ikhono lokwenza ifilimu, ukunamathela, kanye nokuhambisana kwezinto eziphilayo.

I-“K25″ ku-PVP K25 imelela izinga layo lesisindo sama-molecule, lapho “inani le-K” liyisibonakaliso esibalulekile sesisindo sama-molecule se-PVP. Inani le-K eliphakeme lihambisana nesisindo sama-molecule esiphezulu kanye ne-viscosity. I-K25 iwela ebangeni lesisindo sama-molecule esimaphakathi nesiphansi, ikhombisa ukuncibilika okuvelele ezincibilikisini ezifana namanzi, i-ethanol, kanye ne-acetone.

Izicelo Eziyinhloko ze-PVP K25

Ngenxa yesisindo sayo sama-molecule esilinganiselwe, izakhiwo zokunamathela, kanye nokuncibilika,I-PVP K25isetshenziswa kabanzi emithini yemithi, izimonyo, kanye nasemasimini ezimboni:

Insimu Yezokwelapha

I-Tablet Binder: Incibilikiswe emanzini noma e-ethanol, isiza ukuthi izimpushana zemithi zihlangane zibe ama-granule, zithuthukise ukuqina kwethebhulethi kanye nokuqhekeka kwayo.

I-Solubilizer kanye ne-Dispersant: Ithuthukisa ukuncibilika kwemithi engancibiliki kahle ngokwenza ama-complex, ngaleyo ndlela yandise ukutholakala kwe-bioavailability.

Ifilimu Yangaphambili: Isetshenziswa ekwakhiweni okulawulwayo noma kuma-patches e-transdermal ukulawula ukukhishwa kwemithi.

Izimonyo Nokunakekelwa Komuntu Siqu

Ukunakekelwa Kwesikhumba Nokunakekelwa Kwezinwele: Kusebenza njengesithambisi, isiqinisi, noma ukwakheka kwefilimu, kuthuthukisa ukuthungwa komkhiqizo futhi kuqinisekise ukusatshalaliswa ngokulinganayo kwezithako ezisebenzayo.

Imikhiqizo Yokwenza Isitayela (isb., amajeli ezinwele, ama-mascara): Inikeza ukubamba okuqinile futhi kulula ukuyisusa ngenxa yezakhiwo zayo zokwakha ifilimu kanye nokuncibilika emanzini.

Izicelo Zezimboni

Izembozo kanye noyinki: Isebenza njengesihlanzisi kanye nesiqinisi, iqinisa imibala futhi ithuthukise ukunamathela kwezembozo.

Imboni Yezindwangu: Isetshenziselwa ukwelashwa kwendwangu ukuthuthukisa ukuguquguquka nokusebenza okungalingani.

Izinto Ze-elekthronikhi: Zisebenza njenge-binder noma i-dispersant ekukhiqizeni ibhethri noma izingxenye, ziqinisekisa ukumbozwa kwe-electrode okufanayo.

Ukusebenza kahle kwe-PVP K25 kuyamangalisa

Njengento yokunamathisela yemithi yakudala, inzuzo eyinhloko ye-PVP K25 itholakala "ebhalansini" phakathi kwamandla ayo okunamathela kanye nokuthambekela kwesisombululo:

Ukunamathela okuphezulu, okuqinisekisa ubuqotho bethebhulethi: Ingahlanganisa ngempumelelo izimpushana zemithi kanye nezinto ezisizayo (njengezigcwalisi, izinhlayiya eziqhekekile), yakha izinhlayiya eziqinile ngokwesakhiwo. Ukuqina kwamathebhulethi acindezelwe kuyahlangabezana nezindinganiso futhi awathambekeli ekuqhekekeni, okunciphisa izinkinga ezifana namathebhulethi aqhekekile nakhululekile ngesikhathi senqubo yokukhiqiza. Ifaneleka kakhulu kumathebhulethi anezidingo zamandla okunamathela (njengamathebhulethi emithi anesilinganiso esiphezulu kanye namathebhulethi empushana enzima ukwakheka).

I-viscosity yesisombululo esiphansi, kulula ukuyincibilikisa nokuyiphatha Uma kuqhathaniswa namamodeli aphezulu e-PVP (njenge-PVP K30, i-PVP K90), i-K25 inesisindo esiphansi sama-molecule. Isixazululo sayo samanzi noma isixazululo se-organic (njenge-ethanol) sine-viscosity ephansi, sincibilika ngokushesha, futhi cishe akunakwenzeka ukuthi sakhe “izigaxa” ngesikhathi se-granulation, okwenza kube lula ukuxubana okufanayo. Ngesikhathi esifanayo, kunciphisa ubunzima bokusebenza kwemishini (njenge-granulators, i-tablet presses) futhi kuthuthukisa ukusebenza kahle kokukhiqiza.

Iphephe kangakanani i-PVP K25

I-PVP K25iyisithako semithi esinokuphepha okuqinisekisiwe ngokugcwele, esihlangabezana nezindinganiso ze-pharmacopoeia zamazwe amaningi emhlabeni jikelele. Idatha enobuthi isekela ubuthi bayo obuphansi, ukungaqongelelani, kanye nokungacasuli. Ukuziphatha kwayo kwe-metabolic emzimbeni kucacile futhi akuphazamisi. Kuhlanganiswe neminyaka eminingi yesipiliyoni sokusetshenziswa kwemitholampilo, kungacatshangwa ukuthi ngemithamo yemithi evamile, ukuphepha kwayo kuphakeme kakhulu, okwenza kube ukukhetha kwesithako esithembekile emkhakheni wemithi.

Kufanele kuqashelwe ukuthi ukuphepha kwezinto ezisizayo kudinga ukuhlolwa ngokuphelele kuhlanganiswe nefomula iyonke yomuthi othize (njengezinye izinto ezisizayo, izithako ezisebenzayo zomuthi). Ukuphepha komuthi owodwa akumeleli ukuphepha okuphelele komuthi. Ekugcineni, ukusetshenziswa kufanele kulandele imiyalelo ebhalwe kulebula yomuthi.

Sekukonke,I-PVP K25iyi-polymer enesisindo sama-molecule esiphakathi nendawo enezinto zokunamathela eziguquguqukayo kanye nezakhiwo zokwakha ifilimu. Idlala indima ebalulekile kwezokwelapha, izimonyo, kanye nokusetshenziswa kwezimboni, ikakhulukazi njenge-binder, i-solubilizer, kanye ne-dispersant ezinqubweni zokwakheka, okwenza kube yinto ebalulekile yokusiza emikhiqizweni yabathengi neyezimboni.