I-Hydroxypropylmethylcellellellellellellulose (HPMC) i-polymer esetshenziswa ngamanzi esetshenziswa kabanzi kwizimboni ezahlukahlukene ezinjengomuthi, ukudla, izimonyo kanye nokwakha. I-HPMC yaziwa ngezakhiwo zayo zokugcina amanzi ezinhle kakhulu, okwenza kube yisithako esifanele kuzicelo eziningi. Kulesi sihloko, sihlola izici ezithinta ukugcinwa kwamanzi kwe-HPMC nokuthi ungakwenza kanjani lokhu ukukhulisa ukusebenza kwawo.
1. Isisindo molecular
Isisindo se-molecular se-HPMC sidlala indima ebalulekile ezindaweni zayo zokugcina amanzi. Isisindo se-molecular, ubukhulu bomthamo wokugcina amanzi. Lokhu kungenxa yokuthi i-HPMC ephezulu ye-molecular HPMC inokubonakala okuphezulu, okukuvumela ukuthi kwakhiwe ifilimu elibanzi ebusweni be-substrate, ngaleyo ndlela kunciphise ukulahleka kwamanzi. Ngakho-ke, ngezicelo lapho ukugcinwa kwamanzi kubalulekile, kunconywa i-HPMC ephezulu ye-molecular HPMC.
2. Izinga lokufaka esikhundleni
Izinga lokufaka esikhundleni (DS) lisho inani le-hydroxypropyl kanye namaqembu we-methyl ku-molecule ye-HPMC. Okuphezulu kwe-DS, kukhulisa umthamo omkhulu wokugcina amanzi. Lokhu kungenxa yokuthi amaqembu we-hydroxypropyl no-methyl akhuphula i-solubity ye-HPMC emanzini futhi athuthukise amandla awo okwenza ukuvumelana kwe-gel-efana ne-geel Ngakho-ke, ngezicelo lapho ukugcinwa kwamanzi kuyinto ebucayi, i-HPMC ene-degree ephezulu yokufaka esikhundleni sanconywa.
3. Ukushisa kanye nomswakama
Izinga lokushisa kanye nomswakama yizici ezibalulekile ezithinta ukugcinwa kwamanzi kwe-HPMC. Ukushisa okuphezulu kanye nomswakama ophansi kuzodala ukuthi amanzi efilimu le-HPMC avele ngokushesha, okuholela ekugcinweni kwamanzi okumpofu. Ngakho-ke, kunconywa ukugcina i-HPMC endaweni epholile neyomile ukuze kugcinwe izakhiwo zayo zokugcina amanzi.
4 Inani le-PH
I-PH ye-substrate nayo idlala indima ebalulekile ekugcinweni kwamanzi kwe-HPMC. I-HPMC isebenza kahle kakhulu ngokungathathi hlangothi ezindaweni ezinama-acidic kancane. Lapho i-PH ye-matrix iphakeme, i-solubity ye-HPMC ingahle incishiswe futhi umphumela wokugcina amanzi uzoncishiswa. Ngakho-ke, kunconywa ukuvivinya i-PH ye-substrate bese uyilungisa ebangeni elifanele lokugcinwa kwamanzi kahle.
5. Ukugxila
Ukuhlushwa kwe-HPMC kuthinta nezakhiwo zayo zokugcina amanzi. Ngokuvamile, okuphezulu kwe-HPMC, kungcono ukugcinwa kwamanzi. Kodwa-ke, ngokugxila okuphezulu kakhulu, ukubonakala kwe-HPMC kungaba phezulu kakhulu, okwenza kube nzima ukufaka isicelo nokusabalala ngokulinganayo ku-substrate. Ngakho-ke, kunconywa ukuvivinya ukufinyeleleka okuhle kwe-HPMC ngesicelo ngasinye esithile ukuze kufinyelelwe ukugcinwa kwamanzi okuhle kakhulu.
Ekuphetheni, i-HPMC isiphenduke into ebalulekile ngenxa yezakhiwo zayo zokugcina amanzi ezinhle kakhulu futhi idlala indima ebalulekile ezimbonini ezahlukahlukene. Izici ezithinta ukugcinwa kwayo kwamanzi, njengesisindo samangqamuzana, izinga lokufaka esikhundleni, izinga lokushisa kanye nomswakama, i-ph nokuhlushwa, kungenziwa kahle ukukhulisa ukusebenza kwayo. Ngokuqonda lezi zinto, singaqinisekisa ukuthi ama-HPMC afinyelela amandla abo aphelele, okwenza ukudalwa kwemikhiqizo eyenzelwe izakhiwo zazo zokugcina amanzi.
Isikhathi sePosi: Jul-04-2023