I-HPMC, eyaziwa nangokuthi i-hydroxypropyl methylcellulose, iyi-polymer encibilika emanzini esetshenziswa kabanzi embonini yezimonyo, yezemithi kanye neyokudla. I-polymer itholakala ku-cellulose, into yemvelo etholakala ezitshalweni. I-HPMC iyi-thickener enhle kakhulu esetshenziswa kabanzi ukwandisa i-viscosity yezixazululo ezahlukahlukene. Amandla ayo okukhiqiza ama-gel e-thixotropic nawo enza kube ukukhetha okuthandwayo ezinhlotsheni eziningi.
Izakhiwo zokujiya ze-HPMC
Izakhiwo zokujiya ze-HPMC zaziwa kakhulu embonini. I-HPMC ingandisa ukujiya kwesisombululo ngokwakha inethiwekhi yejeli ebamba ama-molecule amanzi. Izinhlayiya ze-HPMC zakha inethiwekhi yejeli lapho zimanziswa emanzini futhi zidonselana ngezibopho ze-hydrogen. Inethiwekhi idala i-matrix enezinhlangothi ezintathu ekhulisa ukujiya kwesisombululo.
Enye yezinzuzo eziyinhloko zokusebenzisa i-HPMC njengesithambisi ukuthi ingaqinisa isixazululo ngaphandle kokuthinta ukucaca kwaso noma umbala waso. I-HPMC iyi-polymer engeyona i-ionic, okusho ukuthi ayinikezi noma yiliphi ishaja esixambisweni. Lokhu kuyenza ifaneleke ukusetshenziswa ekwakhiweni okucacile noma okusobala.
Enye inzuzo ye-HPMC ukuthi ingaqinisa izixazululo ngamanani aphansi. Lokhu kusho ukuthi kudingeka inani elincane le-HPMC ukuze kufezwe i-viscosity oyifunayo. Lokhu kungonga izindleko kubakhiqizi futhi kunikeze amakhasimende imikhiqizo engabizi kakhulu.
I-Thixotropy ye-HPMC
I-Thixotropy iyimpahla yezinto ezinciphisa ukujiya lapho zicindezelwa ukucheba nokubuyela ekujiya kwazo kwasekuqaleni lapho ukucindezeleka kususiwe. I-HPMC iyinto ye-thixotropic, okusho ukuthi isakazeka noma ithululeka kalula ngaphansi kokucindezeleka kokucheba. Kodwa-ke, uma ukucindezeleka sekususiwe, ibuyela ekunamatheleni futhi iqine futhi.
Izakhiwo ze-thixotropic ze-HPMC ziyenza ifaneleke kakhulu ezisetshenzisweni eziningi. Isibonelo, ivame ukusetshenziswa kupende, njengongqimba olujiyile ebusweni. Izakhiwo ze-thixotropic ze-HPMC ziqinisekisa ukuthi ungqimba luhlala phezu kobuso ngaphandle kokugoba noma ukusebenza. I-HPMC isetshenziswa futhi embonini yokudla njengesithako sokuxuba amasoso nama-dressing. Izakhiwo ze-thixotropic ze-HPMC ziqinisekisa ukuthi amasoso noma ama-dressing awaconsi ezipunini noma emapuletini, kodwa kunalokho ahlala eqinile futhi engaguquguquki.
I-HPMC iyi-polymer eguquguqukayo enezinhlelo zokusebenza eziningi ezimbonini ezahlukahlukene. Izici zayo zokujiya kanye nezakhiwo zayo ze-thixotropic zenza ifaneleke kakhulu ekubunjweni kwezimonyo, kwezemithi kanye nokudla. I-HPMC iyi-thickener enhle kakhulu, ekhulisa ukujiya kwesisombululo ngaphandle kokuthinta ukucaca noma umbala waso. Izici zayo ze-thixotropic ziqinisekisa ukuthi isisombululo asibi sikhulu kakhulu noma sibe sincane kakhulu, kuye ngokuthi sisetshenziswa kanjani. I-HPMC iyisithako esibalulekile emikhiqizweni eminingi, futhi izinzuzo zayo eziningi zenza kube ukukhetha okuthandwayo kwabakhiqizi namakhasimende.
Isikhathi sokuthunyelwe: Agasti-25-2023