Yiziphi Izakhiwo Zamakhemikhali zeHypromellose?

IHydroxypropyl Methylcellulose (HPMC), eyaziwa nangokuthi iHypromellose, iyi-polymer yokwenziwa etholakala ku-cellulose. Izakhiwo zayo zamakhemikhali zihlanganisa:

1. Ukunyibilika: I-HPMC iyancibilika emanzini futhi yenza isixazululo esicacile uma ixutshwe namanzi. Ukunyibilika kwe-HPMC kuncike ngezinga layo lokushintshwa (DS) kanye nebanga le-viscosity.
2. I-Viscosity: I-HPMC itholakala kumabanga ahlukahlukene we-viscosity, kusukela kokuphansi kuya kokubonakala okuphezulu. I-viscosity ye-HPMC incike esisindweni sayo samangqamuzana, izinga lokushintshwa, nokugxila.
3. Ukuzinza: I-HPMC izinzile ngaphansi kwezimo ezijwayelekile zezinga lokushisa ne-pH. Iyakwazi ukumelana nokuwohloka kwamagciwane futhi ayiboli kalula.
4. Izakhiwo ezishisayo: I-HPMC inokusimama okuhle kokushisa futhi ingamelana namazinga okushisa afika ku-200°C ngaphandle kokubola.
5. Umsebenzi ongaphezulu: I-HPMC inomsebenzi ongaphezulu ngenxa yemvelo yayo ye-polar, okuyenza isebenziseke njengesisabalalisi nesifanisi ekusetshenzisweni okuhlukahlukene.
6. I-Hygroscopicity: I-HPMC iyi-hygroscopic, okusho ukuthi inomkhuba wokumunca umswakama endaweni. Lesi sakhiwo sikwenza kube usizo njenge-ejenti yokugcina amanzi ezinhlelweni ezahlukahlukene.
7. Ukusebenza kwamakhemikhali: I-HPMC ayisebenzi ngamakhemikhali futhi ayisebenzi namanye amakhemikhali. Kodwa-ke, ingakha izibopho ze-hydrogen namanye ama-molecule asezindaweni ezishisayo, okuyenza isebenziseke njenge-thickener, binder, kanye nefilimu-yangaphambili ekusetshenzisweni okuhlukahlukene.

Ngokufigqiwe,I-HPMCinezinto eziningi zamakhemikhali eziyenza ibe i-polymer eguquguqukayo futhi ewusizo ezimbonini ezahlukahlukene, kufaka phakathi ezemithi, ukudla, izimonyo, nezokwakha. I-solubility yayo, i-viscosity, ukuzinza, izakhiwo ezishisayo, umsebenzi ongaphezulu, i-hygroscopicity, kanye nokusebenza kabusha kwamakhemikhali kuyenza ifanelekele uhla olubanzi lwezinhlelo zokusebenza.