Ukulungiswa kwe-Hydroxypropyl Methylcellulose

I-Hydroxypropyl Methylcellulose (HPMC)iyinhlanganisela ye-polymer encibilika emanzini etholakala ngokushintsha i-cellulose yemvelo ngamakhemikhali. Isetshenziswa kakhulu emikhakheni yemithi, ukudla, izimonyo, kanye nokwakha, futhi inezakhiwo ezinhle kakhulu njengokuqina, ukwakha ifilimu, ukuhlanganisa, kanye nokuzinza.

1. Isimiso sokulungiselela

I-Hydroxypropyl methylcellulose iyi-hydrophilic cellulose derivative, futhi ukuncibilika kwayo kuthinteka kakhulu yi-hydroxypropyl kanye ne-methyl substituents ku-molecule. Iqembu le-methyl landisa ukuncibilika kwamanzi, kuyilapho iqembu le-hydroxypropyl landisa izinga lokuncibilika kwamanzi. Ngokuvamile, i-AnxinCel®HPMC ingancibilika ngokushesha emanzini abandayo ukuze yakhe isixazululo se-colloidal esifanayo, kodwa incibilika kancane emanzini ashisayo, futhi izinto ezi-granular zivame ukuhlangana ngesikhathi sokuncibilika. Ngakho-ke, kufanele kuqashelwe ukulawula izinga lokushisa lokuncibilika kanye nenqubo yokuncibilika ngesikhathi sokulungiselela.

2. Ukulungiswa kwezinto ezingavuthiwe

Impuphu ye-HPMC: Khetha impuphu ye-HPMC ene-viscosities ehlukene kanye namazinga okushintshana ngokwezidingo zokusetshenziswa. Amamodeli avamile afaka i-viscosity ephansi (isisindo sama-molecule esiphansi) kanye ne-viscosity ephezulu (isisindo sama-molecule esiphezulu). Ukukhetha kufanele kusekelwe ezidingweni zefomula ethile.

Isinyibilikisi: Amanzi yisisombululo esivame ukusetshenziswa kakhulu, ikakhulukazi ekusetshenzisweni kwemithi nokudla. Ngokwezidingo zokuncibilikisa, ingxube yamanzi kanye nezinyibilikisi eziphilayo, njengesixazululo esixubile se-ethanol/water, nayo ingasetshenziswa.

3. Indlela yokulungiselela

Isisindo se-HPMC
Okokuqala, kala kahle impuphu ye-HPMC edingekayo ngokuya ngokuhlushwa kwesisombululo okufanele silungiselelwe. Ngokuvamile, ububanzi bokuhlushwa kwe-HPMC bungu-0.5% kuya ku-10%, kodwa ukuhlushwa okuthile kufanele kulungiswe ngokuya ngenhloso kanye nokuthambekela okudingekayo.

Ukuncibilika kokumanzisa ngaphambi kokumanzisa
Ukuze kuvinjelwe i-HPMC ukuthi ihlangane, kuvame ukusetshenziswa ukuncibilika ngaphambi kokumanzisa. Umsebenzi othize uwukuthi: fafaza i-HPMC powder esikaliwe ngokulinganayo engxenyeni ye-solvent, uvuselele kancane, bese wenza i-HPMC powder ixhumane nenani elincane le-solvent kuqala ukuze yakhe isimo esimanzi. Lokhu kungavimbela ngempumelelo i-HPMC powder ukuthi ihlangane futhi kukhuthaze ukuhlakazeka kwayo okufanayo.

Inqubo yokuqedwa
Faka kancane kancane isinyibilikisi esisele ku-HPMC powder emanzi bese uqhubeka nokuxuba. Njengoba i-HPMC inokuncibilika kahle kwamanzi, amanzi kanye ne-HPMC kuncibilika ngokushesha ekushiseni kwegumbi. Gwema ukusebenzisa amandla aphezulu kakhulu okusika lapho uxuba, ngoba ukuxuba okunamandla kuzokwenza amabhamuza akheke, okuthinta ukucaca kanye nokufana kwesixazululo. Ngokuvamile, isivinini sokuxuba kufanele sigcinwe ebangeni eliphansi ukuqinisekisa ukuncibilika okufanayo.

Ukulawula izinga lokushisa
Nakuba i-HPMC ingancibilikiswa emanzini abandayo, uma izinga lokuncibilika lihamba kancane, isixazululo singashiswa ngendlela efanele. Izinga lokushisa lokushisa kufanele lilawulwe phakathi kuka-40°C no-50°C ukuze kugwenywe amazinga okushisa aphezulu kakhulu abangela izinguquko esakhiweni sama-molecule noma izinguquko ezibukhali ekuqineni kwesisombululo. Ngesikhathi senqubo yokushisa, ukuxuba kufanele kuqhutshwe kuze kube yilapho i-HPMC incibilikiswa ngokuphelele.

Ukupholisa nokuhlunga
Ngemva kokuncibilika ngokuphelele, vumela isixazululo siphole ngokwemvelo sifinyelele ekushiseni kwegumbi. Ngesikhathi senqubo yokupholisa, kungavela inani elincane lamabhamuza noma ukungcola esixazululweni. Uma kudingeka, isihlungi singasetshenziswa ukusihlunga ukuze kususwe izinhlayiya eziqinile ezingaba khona futhi kuqinisekiswe ukucaca nokucaca kwesisombululo.

Ukulungiswa kokugcina kanye nesitoreji
Ngemva kokuba ikhambi selipholile, ukuhlushwa kwalo kungalungiswa ngokwezidingo zangempela. Uma ukuhlushwa kuphezulu kakhulu, kungafakwa isinyibilikisi ukuze sincibilikiswe; uma ukuhlushwa kuphansi kakhulu, kudingeka kufakwe impuphu eyengeziwe ye-HPMC. Ngemva kokuba ikhambi selilungisiwe, kufanele lisetshenziswe ngokushesha. Uma kudingeka ligcinwe isikhathi eside, kufanele ligcinwe esitsheni esivaliwe ukuze kugwenywe ukuhwamuka kwamanzi noma ukungcola kwekhambi.

4. Izinyathelo Zokuqapha

Ukulawulwa kwezinga lokushisa: Izinga lokushisa eliphezulu kufanele ligwenywe ngesikhathi sokuncibilika ukuze kugwenywe ukuthinta ukuncibilika nokusebenza kwe-AnxinCel®HPMC. Emazingeni okushisa aphezulu, i-HPMC ingase yonakale noma i-viscosity yayo ingase yehle, okuthinta umphumela wokusetshenziswa kwayo.

Indlela yokuxubha: Gwema ukunqunywa ngokweqile noma isivinini esikhulu sokuxubha ngesikhathi sokuxubha, ngoba ukuxubha okunamandla kungabangela ukwakheka kwamabhamuza futhi kuthinte ukucaca kwesisombululo.

Ukukhetha i-solvent: Amanzi yi-solvent evame ukusetshenziswa kakhulu, kodwa kwezinye izinhlelo ezikhethekile, isixazululo esixubile samanzi nezinye izinyibilikisi (ezifana notshwala, i-acetone, njll.) singakhethwa. Izilinganiso ezahlukene ze-solvent zizothinta izinga lokuncibilika kanye nokusebenza kwesisombululo.

Izimo zokugcina: Isixazululo se-HPMC esilungisiwe kufanele sigcinwe endaweni epholile neyomile ukuze kugwenywe ukuchayeka isikhathi eside ekushiseni okuphezulu noma elangeni eliqondile ukuze kuvinjelwe izinguquko ekhwalithini yesisombululo.

Ukungagayi: Uma impuphu ifakwa ku-solvent, uma impuphu ifakwa ngokushesha kakhulu noma ngokungalingani, kulula ukwakha amaqhubu, ngakho kufanele ingezwe kancane kancane.

5. Izinkambu zohlelo lokusebenza

I-Hydroxypropyl methylcellulose isetshenziswa kabanzi ezimbonini ezahlukahlukene ngenxa yokuncibilika kwayo emanzini okuhle kakhulu kanye nokuhambisana kwayo nezinto eziphilayo:

Imboni yezemithi: Njenge-filmformer, adhesive, thickener, ejenti yokukhulula izidakamizwa, njll., idlala indima ebalulekile enqubweni yokulungiselela izidakamizwa.

Imboni yokudla: Njengesithako sokujiya, i-emulsifier, i-stabilizer, ivame ukusetshenziswa ekucubungulweni kokudla, njenge-ayisikhilimu, izinongo, iziphuzo, njll.

Imboni yokwakha: Njengesithako sokujiya kwezimbozo zokwakha kanye nodaka, ingathuthukisa ukunamathela kanye nokugeleza kwengxube.

Izimonyo: Njengesithambisi, isiqinisi kanye nesithambisi sefilimu, isetshenziswa ezimonyweni ezifana nama-creams, ama-shampoo, kanye nemikhiqizo yokunakekelwa kwesikhumba ukuthuthukisa ikhwalithi yomkhiqizo kanye nolwazi lomsebenzisi.

Ukulungiswa kweI-HPMCkuyinqubo edinga ukunakwa kwemininingwane. Ngesikhathi senqubo yokulungiselela, izici ezifana nokushisa, indlela yokuxuba, kanye nokukhetha i-solvent kudingeka kulawulwe ukuqinisekisa ukuthi ingancibilika ngokuphelele futhi igcine ukusebenza okuhle. Ngendlela efanele yokulungiselela, i-AnxinCel®HPMC ingasetshenziswa kabanzi ezimbonini eziningi futhi idlale indima yayo ebalulekile.