Umehluko phakathi kwe-HPMC ne-HEC

IHydroxypropyl methylcellulose, eyaziwa nangokuthi i-hypromellose ne-cellulose hydroxypropyl methyl ether, yenziwe nge-cellulose kakotini ecwenge kakhulu futhi i-etherified ngokukhethekile ngaphansi kwezimo ze-alkali.

umehluko:

izici ezahlukene

I-Hydroxypropyl methylcellulose: impushana emhlophe noma emhlophe efana nefiber noma ama-granules, ezinhlobo ezihlukahlukene ezingezona i-ionic engxube ye-cellulose, lo mkhiqizo uyi-semi-synthetic, i-polymer ye-viscoelastic engasebenzi.

I-Hydroxyethyl cellulose iyifayibha emhlophe noma ephuzi, engenaphunga, engenabuthi noma impushana eqinile, impahla eluhlaza eyinhloko i-alkali cellulose kanye ne-ethylene oxide etherification, okuyi-non-ionic soluble cellulose ether.

Ukusetshenziswa kuhlukile

Embonini kapende, i-hydroxypropyl methylcellulose inokuncibilika okuhle emanzini noma kumakhemikhali aphilayo njenge-thickener, dispersant and stabilizer. I-Polyvinyl chloride isetshenziswa njengesikhiphi sikapende sokumiswa kwe-polymerization ukuze kulungiswe i-polyvinyl chloride, esetshenziswa kakhulu esikhumbeni, emikhiqizweni yamaphepha, ekulondolozweni kwezithelo nemifino, izindwangu nezinye izimboni.

I-Hydroxypropyl methylcellulose: cishe ayincibiliki ku-ethanol ngokuphelele, i-ether, i-acetone; I-soluble in transparent or turbid colloidal solution emanzini abandayo, asetshenziswa kakhulu ekubanjeni, oyinki, kumafayibha, ukudaya, ukwenza iphepha, izimonyo, izibulala-zinambuzane, amaminerali Ukucutshungulwa komkhiqizo, ukutholwa kukawoyela kanye nezimboni zemithi.

ukuncibilika okuhlukile

I-Hydroxypropyl methylcellulose: cishe ayincibiliki ku-ethanol ngokuphelele, i-ether, i-acetone; inyibilika kusixazululo se-colloidal esicacile noma esiguqubele kancane emanzini abandayo.

I-Hydroxyethyl cellulose (HEC): Ingalungisa izixazululo kububanzi obuhlukahlukene be-viscosity, futhi inezici ezinhle zokuncibilikisa usawoti kuma-electrolyte.