Kunzwisisa iyo HPMC Chemical Structure

HPMC, kana hydroxypropyl methylcellulose, is a cellulose-based polymer iyo inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana anosanganisira mishonga, zvizorwa, uye kugadzira chikafu.Kunzwisisa chimiro chemakemikari yeHPMC kwakakosha pakugadzirisa zvimiro zvayo uye kuita mumashandisirwo akasiyana.

Chimiro chemakemikari cheHPMC chinoumbwa nezvikamu zviviri zvakakosha: cellulose musana uye hydroxypropyl uye methyl substituents.

Cellulose ipolymer inowanzoitika inoumbwa neglucose monomers yakabatanidzwa pamwechete neglycosidic bonds.Iyo cellulose musana weHPMC inotorwa kubva pahuni pulp kana machira ekotoni, ayo anosangana nekemikari yekuchinja maitiro kuti abudise mvura-inonyungudika polima.

Iyo hydroxypropyl uye methyl substituents inowedzerwa kune cellulose musana kuti ivandudze solubility uye kuita kweHPMC.Mapoka eHydroxypropyl anowedzerwa nekuita propylene oxide nemusana we cellulose, nepo mapoka emethyl anowedzerwa nekuita methanol nemapoka ehydroxypropyl.

Iyo dhigirii yekutsiva (DS) yeHPMC inoreva huwandu hwehydroxypropyl uye methyl mapoka anowedzerwa kune cellulose musana.Iyo DS inogona kusiyana zvichienderana neiyo chaiyo application uye zvinodiwa zveHPMC.HPMC ine DS yepamusoro ichange iine solubility yakakura uye viscosity, nepo HPMC ine DS yakaderera ichave yakaderera solubility uye viscosity.

HPMC inowanzo shandiswa seyakakora, emulsifier, uye stabilizer mumhando dzakasiyana dzekushandisa nekuda kweiyo yakasarudzika midziyo.Iyo inonyungudika mumvura, isina muchetura, uye inoora, zvichiita kuti ive imwe nzira inoyevedza kune mamwe mapolymer ekugadzira.Pamusoro pezvo, iyo makemikari ekugadzirisa maitiro anoshandiswa kugadzira HPMC inobvumira kunyatso kudzora pamusoro pezvivakwa zvayo, zvichiita kuti ive inogoneka polymer kune akawanda akasiyana maapplication.

Muchidimbu, kunzwisisa chimiro chemakemikari eHPMC kwakakosha pakugadzirisa zvimiro zvayo uye kuita mumashandisirwo akasiyana.Iyo cellulose musana uye hydroxypropyl uye methyl substituents inoumba iyo yekutanga zvikamu zveHPMC, uye dhigirii rekutsiva rinogona kusiyana zvichienderana nechishandiso chaicho.HPMC yakasarudzika zvivakwa inoita kuti ive inochinja-chinja uye inoyevedza polymer kune akawanda akasiyana maindasitiri.