Hydroxypropylmethylcellulose (HPMC) i polymer yekugadzira inoshandiswa zvakanyanya inowanikwa mumhando dzakasiyana dzezvigadzirwa zvinosanganisira zvekuzora, mishonga yemishonga, pendi uye chikafu. Inogadzirwa nekugadzirisa cellulose kuburikidza nemakemikari reaction yepropylene oxide uye methyl chloride. HPMC ine akati wandei anodiwa zvimiro, senge isiri-chepfu, isingagumbure, inodedera, uye inopindirana. Chimwe chezvinhu zvayo zvakasiyana kugona kukanganisa kutapurirana kwechiedza. Muchinyorwa chino, tinoongorora zvakasiyana siyana zvinotungamira kune HPMCs inokanganisa kutakurwa kwemwenje uye zvingangoita mashandisirwo echinhu ichi.
Chimwe chezvinhu zvikuru zvinokanganisa magetsi ekufambisa zvivakwa zveHPMC chimiro chayo chemolecular. HPMC ndeye branched polymer inoumbwa ne cellulose uye methyl hydroxypropyl inodzokorora zvikamu. Huremu hwemamorekuru eHPMC hunoenderana nedhigirii rekutsiva (DS), avhareji yehuwandu hwehydroxypropyl uye methyl mapoka paserosi unit. HPMC ine yakakwira DS ine akawanda hydroxypropyl uye methyl mapoka, zvichikonzera kukwira kwema molecular huremu uye kukosha kwakanyanya pakufambiswa kwechiedza.
Chimwe chinhu chakakosha chinokanganisa kutapurirana kwemwenje iko kusungirirwa kweHPMC mumhinduro. Kana HPMC yakanyungudutswa mumvura, mhinduro yakajeka uye yakajeka inoumbwa pane yakaderera. Sezvo kusungirirwa kunowedzera, mhinduro inowedzera viscous uye iyo transmittance inoderera nekuda kwekupararira kwechiedza. Ukuru hweichi chiitiko hunoenderana nehuremu hwemamorekuru, DS uye tembiricha yemhinduro.
Chinhu chechitatu chinokanganisa kufambiswa kwechiedza ndiyo pH yemushonga. HPMC inonzi amphoteric polymer inogona kuita seasidhi isina simba uye nheyo isina simba, zvichienderana nepH yemhinduro. Pane yakaderera pH, iyo hydroxypropyl uye methyl mapoka paHPMC anova protonated, zvichikonzera kuderedzwa kunyungudika uye kuderedzwa kwemwenje transmittance. Pamusoro pepH, iyo cellulose musana weHPMC inobviswa, zvichikonzera kuwedzera kunyungudika uye kutapurirana kwechiedza.
Chinhu chechina chinokanganisa kutapurirana kwechiedza kuvapo kwemamwe macommunication akadai semunyu, surfactants uye co-solvents. Makomponi aya anogona kudyidzana neHPMC, zvichikonzera shanduko muchimiro chayo chemorekuru uye kunyungudika, zvichikanganisa kutapurirana kwechiedza. Semuenzaniso, kuwedzera munyu kunogona kuwedzera ionic simba remhinduro, zvichikonzera kuderera kwekunyungudika uye kuwedzera kupararira kwechiedza. Kune rumwe rutivi, kuvapo kwevanoita surfactants kunogona kushandura kushushikana kwepamusoro kwemhinduro, zvichiita kuti kuderera kwe viscosity uye kuwedzera kwechiedza chekufambisa.
Iwo mwenje-kutumira zvivakwa zveHPMC ane akasiyana maapplication. Muindasitiri yemishonga, HPMC inoshandiswa seyakakora, binder uye disintegrant mumapiritsi nemakapisi. Kugona kwayo kukanganisa kutapurirana kwechiedza kunoita kuti ive yakakosha sechinhu chekuputira chinogona kuchengetedza zvinhu zvinoshanda kubva pakuora-kukonzeresa. Iyo yekuparadzira mwenje zvivakwa zveHPMC zvakare inoita kuti ive mumiriri akakodzera kune inodzorwa dhizaini masisitimu inoda kuburitswa kwakasimba kwezvinhu zvinoshanda.
Pamusoro pemishonga, iwo mwenje-kutumira zvivakwa zveHPMC anoshandiswawo muindasitiri yechikafu. HPMC inoshandiswa sechinzvimbo chemafuta mune yakaderera-mafuta uye yakaderera-calori chikafu. Kugona kwayo kugadzira viscous uye yakagadzikana gels mune aqueous mhinduro inoita kuti ive chinhu chakanakira zvigadzirwa senge saladhi yekupfeka, mayonnaise uye sosi. Iyo yekuparadzira mwenje zvimiro zveHPMC zvinogona zvakare kushandiswa kugadzira kutaridzika kwegore muzvinwiwa zvakaita semichero yemichero uye zvinwiwa zvemitambo.
Muchidimbu, hydroxypropylmethylcellulose (HPMC) yakakosha yekugadzira polymer nekuda kweiyo yakasarudzika zvimiro, kusanganisira kugona kukanganisa kutapurirana kwechiedza. Zvinhu zvinokanganisa kutapurirana kwemwenje kweHPMC zvinosanganisira chimiro chayo chemamorekuru, kutarisisa, pH, uye kuvapo kwemamwe makomisheni. Iwo ekufambisa-mwenje zvivakwa zveHPMC ane akati wandei anogona kunyorera mumaindasitiri emishonga uye ezvekudya, kusanganisira inodzorwa kuendesa zvinodhaka uye kudya kwakaderera-mafuta. Sezvo tsvakiridzo yezvivakwa zveHPMCs ichienderera mberi, mamwe maapplication anogona kuwanikwa.
Nguva yekutumira: Aug-02-2023