I-Hydroxypropyl isitashi(HPS) kanyeI-Hydroxypropyl methyl cellulose(HPMC) ama-polysaccharides amabili asetshenziswa kakhulu ezimbonini ezahlukahlukene, kufaka phakathi imithi, ukudla, kanye nokwakha. Ngaphandle kokufana kwazo, i-HPS ne-HPMC inomehluko ohlukile ezimpahleni zazo zomzimba namakhemikhali, kanye nezindima zazo zokusebenza. Kulesi sihloko, sizohlola umehluko phakathi kwe-HPS ne-HPMC ngokuya ngesakhiwo samakhemikhali, izakhiwo, kanye nokusetshenziswa kwayo.

Isakhiwo Samakhemikhali

I-HPS iwumphumela wesitashi otholakala ngokushintsha amakhemikhali isitashi semvelo ngamaqembu e-hydroxypropyl. Amaqembu e-hydroxypropyl anamathiselwe emaqenjini e-hydroxyl ku-molecule yesitashi, okuholela ekubeni isitashi esishintshiwe esinokuncibilika okuthuthukisiwe nokuzinza. I-HPMC, ngakolunye uhlangothi, iphuma ku-cellulose etholakala ngokushintsha amakhemikhali i-cellulose ngamaqembu e-hydroxypropyl kanye ne-methyl. Amaqembu e-hydroxypropyl anamathiselwe emaqenjini e-hydroxyl ku-molecule ye-cellulose, kuyilapho amaqembu e-methyl enamathele kumayunithi e-anhydroglucose.

Izakhiwo

I-HPS ne-HPMC zinezici zomzimba nezekhemikhali ezihlukile ezizenza zifanelekele izinhlelo zokusebenza ezahlukene. Izici ze-HPS zifaka:

1. Ukunyibilika: I-HPS iyancibilika emanzini futhi ingakha izixazululo ezicacile ekugxilweni okuphansi.
2. I-Viscosity: I-HPS ine-viscosity ephansi uma iqhathaniswa ne-HPMC namanye ama-polysaccharides.
3. Ukuzinza: I-HPS izinzile emazingeni okushisa ahlukahlukene kanye namazinga e-pH futhi imelana nama-enzyme nezinye izinto ezilimazayo.
4. I-Gelation: I-HPS ingakha amajeli aguquguqukayo ngokwe-thermal ekugxilweni okuphezulu, okuyenza ifanelekele ukudla okuhlukahlukene kanye nezicelo zemithi.

Izici ze-HPMC zihlanganisa:

1. Ukunyibilika: I-HPMC iyancibilika emanzini futhi yenza izixazululo ezicacile ezindaweni eziphansi.
2. I-Viscosity: I-HPMC ine-viscosity ephezulu futhi ingakha izixazululo ze-viscous ngisho nasezintweni eziphansi.
3. Ukuzinza: I-HPMC izinzile ebangeni elibanzi lamazinga okushisa namazinga e-pH futhi imelana nama-enzyme nezinye izinto ezilimazayo.
4. Ikhono lokwenza ifilimu: I-HPMC ingakha amafilimu azacile, aguquguqukayo awusizo ezinhlelweni ezehlukene zemithi nezimonyo.

Izinhlelo zokusebenza

I-HPS ne-HPMC zinezinhlelo zokusebenza ezihlukile ngenxa yezakhiwo zazo ezihlukile. Izinhlelo zokusebenza ze-HPS zihlanganisa:

1. Ukudla: I-HPS isetshenziswa njengokuqinisa nokuqiniswa emikhiqizweni ehlukahlukene yokudla, njengamasoso, amasobho, nezinto zokugqoka.
2. Ezemithi: I-HPS isetshenziswa njengesihlanganisi kanye nesibulala-magciwane kumaphilisi namaphilisi kanye nanjengemoto yokulethwa kwezidakamizwa.
3. Ukwakhiwa: I-HPS isetshenziswa njenge-thickener ne-binder emikhiqizweni esekwe usimende, njengodaka nokhonkolo.

Izicelo ze-HPMC zifaka:

1. Ukudla: I-HPMC isetshenziswa njenge-thickener ne-stabilizer emikhiqizweni ehlukahlukene yokudla, njengo-ayisikhilimu, iyogathi, nezimpahla ezibhakiwe.
2. Ezemithi: I-HPMC isetshenziswa njenge-binder, disintegrant, kanye ne-ejenti eyenza ifilimu kumaphilisi namaphilisi kanye nanjengemoto yokulethwa kwezidakamizwa.
3. Ukunakekelwa Komuntu Siqu: I-HPMC isetshenziswa emikhiqizweni ehlukahlukene yokunakekela umuntu, njengezigcobo, ama-shampoos, nezimonyo, njengento ejiya futhi eqinisayo.
4. Ukwakhiwa: I-HPMC isetshenziswa njenge-thiener kanye ne-binder emikhiqizweni esekwe usimende, njengodaka nokhonkolo, nanjenge-ejenti yokunameka yezinto zokwakha.

Isiphetho

Sengiphetha, i-HPS ne-HPMC zingama-polysaccharides amabili asetshenziswa kabanzi ezinhlelweni ezihlukene zezimboni. I-HPS iwukuphuma kwesitashi okune-viscosity ephansi uma kuqhathaniswa, ekwazi ukubuyiselwa emuva ngokushisa, futhi izinzile emazingeni okushisa ahlukahlukene kanye namazinga e-pH. I-HPMC, ngakolunye uhlangothi, iwukuphuma kwe-cellulose ene-viscosity ephezulu, ingenza amafilimu amancane, aguquguqukayo, futhi futhi izinzile emazingeni okushisa ahlukahlukene kanye namazinga e-pH. Umehluko phakathi kwalezi zinhlanganisela ezimbili uzenza zifanelekele ukusetshenziswa okuhlukene ezimbonini ezihlukahlukene, kuhlanganise nokudla, imithi, ukunakekelwa komuntu siqu, kanye nokwakhiwa.