Yintoni umahluko phakathi kwe-HPMC kunye ne-HEMC?

I-HPMC (i-Hydroxypropyl Methylcellulose) kunye ne-HEMC (i-Hydroxyethyl Methylcellulose) zizo zombini izinto eziphuma kwi-cellulose ezisetyenziswa njengezinto ezityebisayo, izibophelelo, kunye nezithambiso kwiimveliso ezahlukeneyo. Zombini zithathwe kwi-cellulose, i-polysaccharide yendalo efumaneka kwizityalo.

Umahluko omkhulu phakathi kwe-HPMC kunye ne-HEMC luhlobo lwe-hydroxypropyl kunye namaqela e-hydroxyethyl afakwe kwi-molecule ye-cellulose. I-HPMC inamaqela e-hydroxypropyl ancanyathiselwe kwi-molecule ye-cellulose, ngelixa i-HEMC inamaqela e-hydroxyethyl eqhotyoshelweyo. Lo mahluko kuhlobo lwamaqela e-hydroxypropyl kunye ne-hydroxyethyl ichaphazela iipropati ze-derivatives ze-cellulose ezimbini.

I-HPMC inyibilika ngakumbi emanzini abandayo kune-HEMC, kwaye iyamelana notshintsho lobushushu. Ine-viscosity ephezulu kune-HEMC, kwaye iyamelana ne-asidi kunye ne-alkali. Ikwaxhathisa ngakumbi ukuthotywa kwe-microbial. HPMC isetyenziswa kwiimveliso ezahlukeneyo, kuquka ukutya, amayeza, kunye nezinto zokuthambisa.

I-HEMC ayinyibiliki kancinci emanzini abandayo kune-HPMC, kwaye ayinyangeki kangako kutshintsho lobushushu. Ine-viscosity esezantsi kune-HPMC, kwaye ayinyangeki kangako kwi-asidi kunye ne-alkali. Kananjalo ayinyangeki kangako ekuthotyweni kwe-microbial. I-HEMC isetyenziswa kwiimveliso ezahlukeneyo, kubandakanya ukutya, amayeza, kunye nezinto zokuthambisa.

Ngamafutshane, i-HPMC kunye ne-HEMC zimbini eziphuma kwi-cellulose ezisetyenziswa njengezinto ezityebileyo, izibophelelo, kunye nezifakeli-magama kwiimveliso ezahlukeneyo. Umahluko omkhulu phakathi kwezi zimbini luhlobo lwe-hydroxypropyl kunye namaqela e-hydroxyethyl afakwe kwi-molecule ye-cellulose. I-HPMC inamaqela e-hydroxypropyl ancanyathiselwe kwi-molecule ye-cellulose, ngelixa i-HEMC inamaqela e-hydroxyethyl eqhotyoshelweyo. Lo mahluko kuhlobo lwamaqela e-hydroxypropyl kunye ne-hydroxyethyl ichaphazela iipropati ze-derivatives ezimbini ze-cellulose.