Ibintu by'ingenzi bigira ingaruka ku kubika amazi kwa HPMC

Hydroxypropylmethylcellulose (HPMC), nk'umuti ukoreshwa cyane mu nganda zikora imiti, ukoreshwa cyane mu gusiga ibinini, mu buryo bugenzurwa n'izindi nzira zo gutanga imiti. Imwe mu miterere y'ingenzi ya HPMC ni ubushobozi bwayo bwo kubika amazi, ibyo bikaba bigira ingaruka ku mikorere yayo nk'umuti ufasha mu gufata imiti. Muri iyi nkuru, turasuzuma ibintu by'ingenzi bigira ingaruka ku kubika amazi kwa HPMC, harimo uburemere bwa molekile, ubwoko bw'impinduramatwara, ingano yayo, na pH.

uburemere bwa molekile

Uburemere bwa molekile ya HPMC bugira uruhare runini mu kugena ubushobozi bwayo bwo kubika amazi. Muri rusange, HPMC ifite uburemere bwinshi bwa molekile ikunda amazi kurusha HPMC ifite uburemere buke bwa molekile kandi ishobora kwinjiza amazi menshi. Ibi biterwa nuko HPMC zifite uburemere bwinshi bwa molekile zifite iminyururu miremire ishobora gukurura no gukora urusobe runini, bigatuma amazi ashobora kwinjiza. Ariko, ni ngombwa kumenya ko HPMC ifite uburemere bwinshi bwa molekile izatera ibibazo nko kuba amazi menshi no kugorana kuyatunganya.

ubundi

Ikindi kintu bigira ingaruka ku bushobozi bwo kubika amazi bwa HPMC ni ubwoko bw'isimburana. Muri rusange HPMC iza mu buryo bubiri: hydroxypropyl-substituted na methoxy-substituted. Ubwoko bwa hydroxypropyl-substituted bufite ubushobozi bwo kwinjiza amazi menshi kurusha ubwoko bwa methoxy-substituted. Ibi biterwa nuko itsinda rya hydroxypropyl riri muri molekile ya HPMC rikunda amazi kandi rikongera imbaraga za HPMC ku mazi. Mu buryo bunyuranye, ubwoko bwa methoxy-substituted ntibukunda amazi cyane bityo bukaba bufite ubushobozi buke bwo kubika amazi. Kubwibyo, ubundi bwoko bwa HPMC bugomba gutoranywa neza hashingiwe ku miterere yifuzwa y'umusaruro wa nyuma.

shyira imbaraga kuri

Ubucucike bwa HPMC bugira ingaruka ku bushobozi bwayo bwo kubika amazi. Iyo ubucucike buke, HPMC ntabwo ikora imiterere isa na gel, bityo ubushobozi bwayo bwo kubika amazi buba buke. Uko ubucucike bwa HPMC bwiyongeraga, molekile za polymer zatangiye kwivanga, zikora imiterere isa na gel. Uru rusobe rwa gel rufata amazi kandi rugafata, kandi ubushobozi bwa HPMC bwo kubika amazi buriyongera uko ubucucike bugenda bwiyongera. Ariko, ni ngombwa kumenya ko ubucucike bwinshi bwa HPMC buzatuma habaho ibibazo byo gukora nk'ubucucike no guhangana n'ibibazo byo gutunganya. Kubwibyo, ubucucike bwa HPMC bukoreshwa bugomba kunozwa kugira ngo bugere ku bushobozi bwifuzwa bwo kubika amazi mu gihe hirindwa ibibazo byavuzwe haruguru.

Agaciro ka PH

Agaciro ka pH k'ibidukikije aho HPMC ikoreshwa kazagira ingaruka ku bushobozi bwayo bwo kubika amazi. Imiterere ya HPMC irimo amatsinda ya anionic (-COO-) n'amatsinda ya ethylcellulose akunda amazi (-OH). Ionization y'amatsinda ya -COO- iterwa na pH, kandi urugero rwa ionization rwabo ruriyongera iyo pH igeze. Kubwibyo, HPMC ifite ubushobozi bwo kubika amazi bwinshi iyo pH iri hejuru. Iyo pH iri hasi, itsinda rya -COO- rirahinduka protonation kandi hydrophilicity yaryo iragabanuka, bigatuma ubushobozi bwo kubika amazi buke. Kubwibyo, pH y'ibidukikije igomba kunozwa kugira ngo igere ku bushobozi bwo kubika amazi bwifuzwa bwa HPMC.

mu gusoza

Muri make, ubushobozi bwo kubika amazi bwa HPMC ni ikintu cy'ingenzi bigira ingaruka ku mikorere yayo nk'umuti ukoresha imiti. Ibintu by'ingenzi bigira ingaruka ku bushobozi bwo kubika amazi bwa HPMC birimo uburemere bwa molekile, ubwoko bw'impindura, ubwinshi bw'ibice n'agaciro ka pH. Mu guhindura neza ibi bintu, ubushobozi bwo kubika amazi bwa HPMC bushobora kunozwa kugira ngo bugere ku miterere yifuzwa y'umusaruro wa nyuma. Abashakashatsi mu by'imiti n'abakora imiti bagomba kwita cyane kuri ibi bintu kugira ngo barebe ko imiti ikomoka kuri HPMC ifite ubuziranenge n'imikorere myiza.