Hydroxypropyl methylcellulose (HPMC)firimu rine kuita kwakanakisa, asi nekuti HPMC inodziya gel, iyo viscosity pakudziya kwakadzika yakadzikira, iyo isingakodzeri kupfekedza (kana kunyura) uye kuomeswa nekudzikira tembiricha kugadzira firimu rinodyiwa, zvichikonzera kusashanda zvakanaka kwekugadzirisa; uyezve, mutengo wayo wepamusoro unoganhurira kushandiswa kwayo. Hydroxypropyl starch (HPS) inodhura-inotonhora gel, kuwedzera kwayo kunogona kuwedzera viscosity yeHPMC pane yakaderera tembiricha, kunatsiridza mashandiro eHPMC, uye kuderedza mutengo wekugadzira, zvakare, yakafanana hydrophilicity , glucose zvikamu uye hydroxypropyl mapoka ese anobatsira kuvandudza kuwirirana kwemapolymers maviri aya. Naizvozvo, inotonhora-inotonhora gel blend system yakagadzirwa nekusanganisa HPS neHPMC, uye mhedzisiro yekushisa pane gel chimiro cheHPMC / HPS inopisa-inotonhora gel blend system yakadzidzwa zvakarongeka nekushandisa rheometer uye diki angle X-ray nzira dzekuparadzira. , yakabatanidzwa nekufurira kwemamiriro ekupisa kwekushisa pane microstructure uye zvivakwa zve membrane system, uye ndokuvaka hukama pakati peiyo gel chimiro che blend system-membrane structure-membrane properties pasi pemamiriro ekupisa.
Zvigumisiro zvinoratidza kuti pakupisa kwepamusoro, gel ine yakakwiriraHPMCzvemukati zvine yakakwira modulus uye yakanyanya kukosha yakasimba-yakaita semaitiro, iyo yega-yakafanana dhizaini yegel scatterers ine denser, uye saizi yegel aggregates yakakura; pakushisa kwakadzika, iyo HPS yemukati Yepamusoro gel samples ine yakakwira modulus, yakanyanya kusimba-yakaita semaitiro, uye denser self-yakafanana chimiro chemafuta anoparadzira. Kune iwo masampula ane muyero wakafanana wekusanganisa, iyo modulus uye yakasimba-yakafanana hunhu kukosha uye yakazvimiririra yakafanana chimiro density yeiyo gels inodzorwa neHPMC pakupisa kwepamusoro yakakwira kupfuura iyo inotongwa neHPS pane yakaderera tembiricha. Iyo tembiricha yekuomesa inogona kukanganisa iyo gel chimiro chegadziriro isati yaoma, uye yobva yakanganisa chimiro chekristalline uye chimiro cheamorphous chemufirimu, uye pakupedzisira kuve nemhedzisiro yakakosha pamagetsi emufirimu, zvichikonzera kusimba kwekusimba uye modulus yefirimu yakaomeswa pakupisa kwakanyanya. Yakakwirira kudarika yakaoma pakupisa kwakadzika. Mwero wekutonhodza hauna mhedzisiro iri pachena pane yekristaro chimiro chehurongwa, asi ine mhedzisiro pakuwanda kweiyo microdomain inofanana muviri wefirimu. Mune ino system, kuwanda kweiyo yega-yakafanana chimiro chemufirimu inogona kukanganisa michina yefirimu. Kuita kune simba guru.
Zvichienderana nekugadzirira kwe membrane yakasanganiswa, chidzidzo chakawana kuti kushandiswa kweiyo iodine mhinduro yekusarudza dhayi yeHPMC/HPS yakasanganiswa membrane yakagadzira nzira nyowani yekutarisa zvakajeka kugoverwa kwechikamu uye shanduko yechikamu cheiyo yakasanganiswa system pasi pemaikorosikopu. nzira, ine nzira yekutungamira yakakosha pakudzidza kwechikamu chekugoverwa kwemasitadhi-based blend masisitimu. Kushandisa iyi nzira itsva yekutsvakurudza, yakasanganiswa ne infrared spectroscopy, scanning electron microscopy uye extensometer, kuchinja kwechikamu, kuenderana uye michina yemaitiro ehurongwa zvakaongororwa uye kudzidza, uye kuwirirana, kuchinja kwechikamu uye kuonekwa kwefirimu kwakagadzirwa. hukama pakati pekuita. Mhedzisiro yekuona microscope inoratidza kuti chirongwa chinopinda chikamu chekuchinja apo HPS chiyero chiri 50%, uye interphase mixing phenomenon iripo mufirimu, zvichiratidza kuti hurongwa hune humwe hutano hwekuenderana; infrared, thermogravimetric ongororo uye SEM mhedzisiro inosimbisa kusanganisa. Iyo sisitimu ine mwero wakati wekuenderana. Iyo modulus yefirimu yakasanganiswa inoshanduka kana HPS yemukati iri 50%. Apo iyoHPSzvemukati zvakakura kupfuura 50%, kona yekuonana yemuenzaniso wakasanganiswa inotsauka kubva pamutsara wakatwasuka unobatanidza makona ekusangana emasampuli akachena, uye kana iri pasi pe50%, inotsauka zvisina kunaka kubva mumutsara uyu wakatwasuka. , iyo inonyanya kukonzerwa nekuchinja kwechikamu.
Nguva yekutumira: Kubvumbi-25-2024