Nei HEMC iri sarudzo iri nani pane HPMC?

Hypromellose (HPMC) uye hydroxyethylmethylcellulose (HEMC) maviri anoshandiswa zvakanyanya seruseru kubva kune maapplication mumaindasitiri emishonga, chikafu uye cosmetic. Kunyangwe HPMC neHEMC vachigovana zvakawanda zvakafanana, zvinosiyana mune dzimwe nzira, zvichiita kuti imwe ive yepamusoro kune imwe kune mamwe maapplication.

HEMC imodified cellulose ether inowanikwa nekuita methyl cellulose ine ethylene oxide uye ethyl chloride, uyezve kutsiva ethyl yehydroxyl. Naizvozvo, HEMC ine dhigirii repamusoro rekutsiva (DS) pane HPMC. DS inoreva avhareji yenhamba yezvinotsiva paglucose unit, iyo inokanganisa chimiro chemuviri nemakemikari epolymer. Kazhinji, DS yepamusoro inoguma nekunyungudika kuri nani muzvinonyungudutsa zveorganic, kukurumidza kunyungudika mitengo, uye kuwedzera hunhu hwekunwa mvura. Iyo DS yeHEMC inowanzova 1.7-2.0, nepo DS yeHPMC kazhinji iri pakati pe1.2 ne1.5.

Mukana wakasiyana weHEMC pamusoro peHPMC isimba rayo rekuchengetedza mvura, zvichiita kuti ive yakanaka kune anonamira maumbirwo, zvekuvaka uye zvimwe zvigadzirwa zvinoda kuchengetedza mvura zvakanaka. HEMC zvakare inoshingirira kurwisa hutachiona kupfuura HPMC uye ine hupenyu hurefu hwesherufu. Iyo yakawedzera hydrophobicity yeHEMC uye kuvapo kwemapoka ethyl mumusana wayo inoita kuti ive yakanakisa emulsifier uye inogona kuvandudza kugadzikana kwenguva refu kweemulsions.

Imwe bhenefiti yekushandisa HEMC kuenderana kwayo nemamwe akawanda makemikari, ayo anobatsira mukusiyana kwayo mukushandisa kwakasiyana. Mukuwedzera, HEMC ine maitiro akanaka ekugadzira firimu, izvo zvinoita kuti zvive zvakakosha pakugadzirwa kwekuputira uye mabhanhire mukugadzirwa kwemapiritsi, mapiritsi uye granules.

Nekune rimwe divi, HPMC ine zvirinani kupisa gelling zvivakwa, izvo zvinoita kuti ive sarudzo yakanaka kune inononoka-kuburitsa mishonga yekugadzira iyo inoda tembiricha-inonzwa gels. HPMC zvakare ine zvirinani kunyungudika kwemvura uye isinganyanyi kuumba coagglomerates, izvo zvisinganyunguriki aggregates emapolymer mune mhinduro.

Mukupedzisa, ese HEMC uye HPMC akakosha selulosi anobva kune anopa akasiyana mabhenefiti zvichienderana nekushandisa. HEMC ine nani kuchengetedza mvura, emulsification, uye kuenderana nemamwe makemikari, nepo HPMC ine yakanakisa thermogelling zvivakwa uye kunyungudika kwemvura. Naizvozvo, sarudzo pakati peHEMC neHPMC inoenderana nechikumbiro chaunoda, maitiro ekugadzira uye ekupedzisira chigadzirwa zvinodiwa.