Umehluko phakathi kwe-hydroxypropyl isitashi ne-Hydroxypropyl methyl cellulose

I-Hydroxypropyl isitashi ne-hydroxypropyl methyl cellulose (HPMC) womabili ama-polysaccharide aguquliwe asetshenziswa ezimbonini ezahlukahlukene, okuhlanganisa ukudla, imithi, izimonyo, kanye nokwakha. Ngenkathi babelana ngokufana okuthile, banomehluko ohlukile ngokuya ngesakhiwo samakhemikhali, izakhiwo, kanye nokusetshenziswa. Nawu umehluko omkhulu phakathi kwesitashi se-hydroxypropyl ne-HPMC:

Isakhiwo Sekhemikhali:

1. Isitashi seHydroxypropyl:
   • I-Hydroxypropyl isitashi isitashi esishintshiwe esitholakala ngokwethula amaqembu e-hydroxypropyl ku-molecule yesitashi.
   • Isitashi siyi-polysaccharide eyakhiwe amayunithi e-glucose axhunywe ndawonye ngamabhondi e-glycosidic. I-Hydroxypropylation ihilela ukufakwa esikhundleni kwamaqembu e-hydroxyl (-OH) ku-molecule yesitashi namaqembu e-hydroxypropyl (-CH2CHOHCH3).
2. I-Hydroxypropyl Methyl Cellulose (HPMC):
   • I-HPMC iyi-ether ye-cellulose eguquliwe etholwe ngokwethula kokubili i-hydroxypropyl namaqembu e-methyl ku-molecule ye-cellulose.
   • I-Cellulose iyi-polysaccharide eyakhiwe amayunithi e-glucose axhunywe ndawonye ngamabhondi e-β(1→4) e-glycosidic. I-Hydroxypropylation yethula amaqembu e-hydroxypropyl (-CH2CHOHCH3), kuyilapho i-methylation yethula amaqembu e-methyl (-CH3) kumgogodla we-cellulose.

Izakhiwo:

1. Ukunyibilika:
   • Isitashi se-Hydroxypropyl ngokuvamile siyancibilika emanzini ashisayo kodwa singabonisa ukuncibilika okulinganiselwe emanzini abandayo.
   • I-HPMC iyancibilika emanzini abandayo nashisayo, yakha izixazululo ezicacile, ezine-viscous. Ukunyibilika kwe-HPMC kuncike ezingeni lokushintsha (DS) kanye nesisindo samangqamuzana se-polymer.
2. I-Viscosity:
   • Isitashi se-Hydroxypropyl singabonisa izici ezithuthukisa i-viscosity, kodwa i-viscosity yaso ngokuvamile iphansi uma iqhathaniswa ne-HPMC.
   • I-HPMC yaziwa ngezakhiwo zayo ezinhle kakhulu zokujiya kanye ne-viscosity-modifying. I-viscosity yezixazululo ze-HPMC ingalungiswa ngokushintshanisa ukugxila kwe-polymer, i-DS, nesisindo samangqamuzana.

Izicelo:

1. Ukudla Nemithi:
   • I-Hydroxypropyl isitashi ivamise ukusetshenziswa njenge-thickener, stabilizer, kanye ne-gelling ejenti emikhiqizweni yokudla efana nesobho, amasoso, nama-dessert. Ingase futhi isetshenziswe ekwakhiweni kwemithi.
   • I-HPMC isetshenziswa kakhulu ekudleni, kwezemithi, nasezimonyoni njenge-thickener, emulsifier, stabilizer, ifilimu yangaphambili, kanye ne-ejenti ekhishwayo elawulwayo. Ivame ukutholakala emikhiqizweni efana namaphilisi, amafutha okugcoba, okhilimu, nezinto zokunakekela komuntu siqu.
2. Izinto Zokwakha Nezokwakha:
   • I-HPMC isetshenziswa kakhulu embonini yezokwakha njengesithasiselo emikhiqizweni esekwe usimende njengezinamatheliso zamathayili, amadaka, ama-renders, namaplasta. Ihlinzeka ngokugcinwa kwamanzi, ukusebenza, ukunamathela, nokusebenza okuthuthukisiwe kulezi zinhlelo zokusebenza.

Isiphetho:

Nakuba kokubili isitashi se-hydroxypropyl kanye ne-HPMC kuyi-polysaccharides eguquliwe esebenza ngendlela efanayo, anezakhiwo zamakhemikhali ezihlukile, izakhiwo, kanye nezicelo. Isitashi se-Hydroxypropyl sisetshenziswa ngokuyinhloko ekudleni nasezinhlelweni zemithi, kuyilapho i-HPMC ithola ukusetshenziswa okubanzi ekudleni, emithini yemithi, kwizimonyo, nasezintweni zokwakha. Ukukhetha phakathi kwesitashi se-hydroxypropyl ne-HPMC kuncike ezidingweni ezithile zohlelo oluhlosiwe.