Ko hydroxypropyl methylcellulose inobva kupi?

Hydroxypropyl methylcellulose (HPMC) i polymer yakagadzirwa kubva ku cellulose, inova inowanzoitika organic polymer inoumba sero madziro ezvirimwa. HPMC inogadzirwa nemakemikari ekugadzirisa cellulose kuburikidza nemaitiro anonzi etherification.

Mune etherification, cellulose inobatwa nemusanganiswa wepropylene oxide uye methyl chloride pasi pemamiriro ekudzora kuti ibudise hydroxypropyl cellulose (HPC). HPC inozogadziridzwa zvakare nekuibata ne methanol uye hydrochloric acid kugadzira HPMC.

Chigadzirwa cheHPMC chinonyungudika mumvura, isiri-ionic polima ine zvinhu zvakawanda zvinobatsira, sekuchengetedza mvura yakawanda, kugona kugadzira firimu, uye kukora nekudzikamisa zvivakwa. Zvivakwa izvi zvinoita kuti HPMC ive yekuwedzera inobatsira mune dzakasiyana siyana dzekushandisa, senge zvekuvaka, mishonga, uye zvigadzirwa zvekudya.

Nepo HPMC ichitorwa kubva ku cellulose, iri synthetic polymer iyo inogadzirwa kuburikidza neyakaoma makemikari maitiro.