I-Hydroxypropylmethylcellellellellulose (HPMC) iyisengezo esibalulekile kudaka, esidlala indima ebalulekile ekuthuthukiseni ukusebenza ngodaka. Njengokungabi nalo okunobuthi, okungaguquki kanye nokungcoliswa kwemvelo okunobungane kwemvelo, i-HPMC ishaye kancane kancane yathatha izithasiselo zendabuko ezinjengeStarch Ether neLignin Ether embonini yezokwakha. Lo mbhalo uzoxoxa ngeqhaza elibalulekile le-HPMC ngodaka kusuka ezicini ezintathu zokugcinwa kwamanzi, ukuzokwenza kanye nokuhlangana kwezinhlekelele.
I-HPMC ingathuthukisa ngempumelelo ukugcinwa kwamanzi ngodaka ngodaka. Ukugcinwa kwamanzi kodaka kubhekiselwa emandleni odaka ukuze kugcinwe okuqukethwe kwawo kwamanzi ngesikhathi sokwakha. Ukugcinwa kwamanzi kodaka kuhlobene nokusebenza kuka usimende kanye nezithasiselo ezisetshenziswa ngodaka. Uma udaka elahlekelwa amanzi amaningi, kuzodala ukuthi udaka lome, oluzonciphisa kakhulu ukusebenziseka kwalo nokunamathelisa, futhi kubangele ngisho nezinkinga ezinjengemifantu emkhiqizweni ophelile.
I-HPMC iqukethe ama-hydroxypropyl kanye namaqembu we-methyl futhi i-hydrophilic kakhulu. Kungakha ungqimba lwefilimu elingaphezulu ebusweni bezinhlayiya zodaka ukuvimba ukuhwamuka kwamanzi futhi kuthuthukise ngempumelelo ukugcinwa kwamanzi ngodaka lwamanzi. Ngasikhathi sinye, i-HPMC nayo ingahlanganisa nama-molecule amanzi ngama-hydrogen bond, okwenza kube nzima ngokwengeziwe ama-molecule amanzi ukuze ahlukanise nezinhlayiya zodaka. Ngakho-ke, i-HPMC inomthelela omkhulu ekuthuthukiseni ukugcinwa kwamanzi ngodaka.
I-HPMC ingathuthukisa nokusebenza kodaka. Ukusebenza kodaka kubhekisele kalula lapho kufakwa khona ngodaka futhi kubunjwe ngesikhathi sokwakha. Ukwenza kangcono ukusebenziseka kodaka, kuba lula ukuthi abasebenzi bezokwakha balawule ukwakheka nokuvumelana kodaka ngesikhathi sokwakha. Ukusebenza okuhle kodaka kunganciphisa futhi inani lamaphakethe omoya kumkhiqizo osuqediwe, okwenza isakhiwo sibe mkhulu ngokwengeziwe futhi siqine.
I-HPMC ingathuthukisa ngempumelelo ukusebenziseka kodaka ngokunciphisa ukubonwa kodaka. Isisindo se-molecular se-HPMC siphakeme kakhulu, futhi kulula ukwakha ama-hydrogen bond ngama-molecule amanzi, okuholela ekubonakaleni okuphezulu. Kodwa-ke, i-HPMC ingaboshelwa ibe izinhlayiya ezincane ngaphansi kwesenzo se-shear Force, kunciphisa ukubonana kodaka. Ngakho-ke, lapho abasebenzi bezokwakha baphatha udaka, izinhlayiya ze-HPMC zizodilizwa, okwenza uketshezi oluningi futhi lube lula ukwakha khona. Ngaphezu kwalokho, amaqembu e-hpdrophilic ku-HPMC angakha futhi ifilimu elingaphezulu ebusweni bezinhlayiya zodaka, anciphise ukungezwani phakathi kwezinhlayiya zodaka, futhi athuthukise ukusebenziseka kodaka.
I-HPMC ingathuthukisa ukunamathela kodaka. Ukunamathenjwa kodaka kubhekisele emandleni alo okulandela ngokuqinile ebusweni be-substrate. Ukunamathela okuhle kungakha ukuxhumana okuqinile nokwethembekile phakathi kodaka kanye ne-substrate, kuqinisekisa ukuqina komkhiqizo ophelile. Ngaphezu kwalokho, ukunamathela okuhle kungenza futhi ingaphezulu lomkhiqizo oqediwe bushelelezi futhi buhle ngokwengeziwe.
I-HPMC ingathuthukisa ukunamathela kodaka ngezindlela eziningana. Okokuqala, i-HPMC ingakha ifilimu engaphezulu ebusweni be-substrate ngemuva kokwakhiwa kodaka, okunganciphisa ngempumelelo ukungezwani okuphezulu kwe-substrate futhi kwenze kube lula ngodaka ukuze unamathele ku-substrate. Okwesibili, izinhlayiya ze-HPMC nazo zingenza isakhiwo senethiwekhi ebusweni be-substrate, khulisa indawo yokuxhumana phakathi kodaka kanye ne-substrate, futhi uthuthukise ukunamathela kodaka. Ngaphezu kwalokho, amaqembu we-hpdrophilic ku-HPMC angahlanganiswa nama-molecule wamanzi, angakhulisa ngempumelelo isilinganiso sesilinganiso samanzi sodaka ngodaka futhi athuthukise futhi amandla okubumbana kodaka.
Ukusetshenziswa kwe-HPMC kuDinar kunezindlela eziningi ezifana nokugcinwa kwamanzi, ukuzokwenza kanye nokunamathelisa okuthuthukile. Lezi zinzuzo azigcini nje ngokuzuzisa abasebenzi zokwakha, kepha futhi zinomthelela omuhle kwikhwalithi ephelele yomkhiqizo ophelile. Ngokuthuthukiswa kwesayensi nezobuchwepheshe, kukholelwa ukuthi i-HPMC izodlala indima ebaluleke kakhulu embonini yezokwakha futhi inikeze ngezinto zokwakha ezisebenzayo nezimpumelelo embonini yezokwakha.
Isikhathi sePosi: Sep-01-2023