Zvakawanda sei zvaunoziva nezve Hydroxypropyl methyl cellulose?

Hydroxypropyl methylcellulose (HPMC) is a cellulose ether inotorwa kubva kune yakasikwa cellulose. Iyo yakagadzirwa, inonyungudika mumvura, isiri-ionic polymer iyo inowanzoshandiswa mumaindasitiri akasiyana sekuvaka, mishonga, chikafu, zvizorwa, uye machira.

HPMC inogadzirwa nemakemikari ekugadzirisa cellulose ine propylene oxide uye methyl chloride kuunza hydroxypropyl uye methyl mapoka mu cellulose molecule. Iyo dhigirii yekutsiva (DS) yeHPMC inoreva huwandu hwehydroxypropyl uye methyl mapoka paanhydroglucose unit (AGU) ye cellulose.

HPMC ine zvivakwa zvakati wandei zvinoita kuti ive yakakosha mumashandisirwo akasiyana siyana. Inonyungudika mumvura, inoumba mhinduro yakajeka, uye ine kunaka kwekushisa kwekushisa. Iyo zvakare yakagadzikana pasi peyakajairwa mamiriro ekushisa uye pH uye haina kuora nyore nyore. HPMC is hygroscopic, zvinoreva kuti inogona kutora uye kuchengetedza unyoro. Haisi-chepfu, isingatsamwisi, uye isiri-allergenic, iyo inoita kuti ive yakachengeteka kushandiswa mune zvakawanda zvekushandisa.

Muindasitiri yekuvaka, HPMC inoshandiswa seyakakora, bhainda, uye inochengeta mvura muzvigadzirwa-simende, zvinonamira mataira, plasters, uye zvimwe zvekuvakisa. Muindasitiri yemishonga, HPMC inoshandiswa sebhainda, disintegrant, uye firimu-yekare mumapiritsi uye capsule maumbirwo. Muindasitiri yechikafu, HPMC inoshandiswa seyakakora, emulsifier, uye stabilizer muzvigadzirwa zvakasiyana. Muzvizoro, HPMC inoshandiswa seyakakora, firimu-yaimbova, uye emulsifier mumakirimu, lotions, uye mamwe magadzirirwo.

Pakazere, HPMC inogoneka uye inobatsira polima ine huwandu hwakasiyana hwekushandisa mumaindasitiri akasiyana nekuda kweiyo yakasarudzika zvivakwa.