Umahluko phakathi kwe-HPMC kunye ne-HEC

I-Hydroxypropyl methylcellulose, ekwaziwa ngokuba yi-hypromellose kunye ne-cellulose hydroxypropyl methyl ether, yenziwe nge-cotton cellulose ecocekileyo kakhulu kwaye inyibilikiswa ngokukodwa phantsi kweemeko ze-alkaline.

umehluko:

iimpawu ezahlukeneyo

I-Hydroxypropyl methylcellulose: umgubo okanye iigranule ezifana nefayibha emhlophe okanye emhlophe, ezikwiintlobo ezahlukeneyo ezingezizo i-ionic kumxube we-cellulose, le mveliso yi-polymer ye-viscoelastic engasebenziyo, engasebenziyo.

I-Hydroxyethyl cellulose yifayibha emhlophe okanye etyheli, engenavumba, engenatyhefu okanye umgubo oqinileyo, izinto ezisetyenziswa kakhulu yi-alkali cellulose kunye ne-ethylene oxide etherification, eyi-non-ionic soluble cellulose ether.

Ukusetyenziswa kwahlukile

Kwishishini lokupenda, i-hydroxypropyl methylcellulose inokunyibilika kakuhle emanzini okanye kwizinyibilikisi zendalo njengesithambisi, isinyibilikisi kunye nesiqinisi. I-Polyvinyl chloride isetyenziswa njengesisusi sepeyinti sokudibanisa i-polymerization ukulungiselela i-polyvinyl chloride, esetyenziswa kakhulu kwisikhumba, kwiimveliso zephepha, ekugcinweni kweziqhamo nemifuno, kwimpahla yokunxiba kunye neminye imboni.

I-Hydroxypropyl methylcellulose: ayinyibiliki phantse kwi-ethanol epheleleyo, i-ether, i-acetone; iyanyibilika kwisisombululo se-colloidal esicacileyo okanye esirhabaxa emanzini abandayo, isetyenziswa kakhulu kwiingubo, kwii-inki, kwiifayibha, ekudayweni, ekwenzeni amaphepha, kwizinto zokuthambisa, kwizibulala-zinambuzane, kwiiminerali. Ukulungiswa kweemveliso, ekubuyiselweni kweoyile nakwimizi-mveliso yamayeza.

ukunyibilika okwahlukileyo

I-hydroxypropyl methylcellulose: ayinyibiliki phantse kwi-ethanol epheleleyo, i-ether, i-acetone; iyanyibilika kwisisombululo se-colloidal esicacileyo okanye esinamafu kancinci emanzini abandayo.

I-Hydroxyethyl cellulose (HEC): Ingalungisa izisombululo kwiindidi ezahlukeneyo ze-viscosity, kwaye ineempawu ezilungileyo zokunyibilikisa ityuwa kwii-electrolytes.