HPMC kana hydroxypropyl methylcellulose chinhu chinoshandiswa zvakasiyana-siyana chinoshandiswa mumaindasitiri akasiyana siyana anosanganisira zvemishonga, zvekuzora uye chikafu.Inoshandiswa zvakanyanya seyakakora uye emulsifier, uye viscosity yayo inoshanduka zvichienderana nekupisa kwainoratidzirwa.Muchikamu chino, tichatarisa pahukama pakati pe viscosity uye tembiricha muHPMC.
Viscosity inotsanangurwa sechiyero chekuramba kwemvura kuyerera.HPMC chinhu chakasimba semi-solid icho kuyerwa kwekudzivirira kunoenderana nezvinhu zvakasiyana, kusanganisira tembiricha.Kuti tinzwisise hukama pakati peviscosity uye tembiricha muHPMC, isu chekutanga tinoda kuziva kuti chinhu ichi chinoumbwa sei uye kuti chinogadzirwa nei.
HPMC inotorwa kubva ku cellulose, inowanzoitika polima muzvirimwa.Kugadzira HPMC, cellulose inoda kuvandudzwa nemakemikari nepropylene oxide uye methyl chloride.Uku kugadziridzwa kunoguma mukuumbwa kwehydroxypropyl uye methyl ether mapoka mucheni ye cellulose.Mhedzisiro ndeye semi-solid substance inogona kunyungudutswa mumvura uye organic solvents uye inoshandiswa mumhando dzakasiyana dzekushandisa, kusanganisira seyakaputira mahwendefa uye seyakakora mumiriri wezvikafu, pakati pezvimwe.
Iko viscosity yeHPMC inotsamira pakusangana kwechinhu uye tembiricha iyo inoburitswa.Kazhinji, viscosity yeHPMC inodzikira nekuwedzera kusungwa.Izvi zvinoreva kuti kuwanda kwepamusoro kweHPMC kunokonzeresa yakaderera viscosities uye zvinopesana.
Zvisinei, hukama hwakasiyana pakati peviscosity uye tembiricha yakanyanya kuoma.Sezvambotaurwa, viscosity yeHPMC inowedzera nekudzikira tembiricha.Izvi zvinoreva kuti kana HPMC ichiiswa kune yakaderera tembiricha, kugona kwayo kuyerera kunoderera uye inova yakawanda viscous.Saizvozvo, kana HPMC iri pasi pekushisa kwakanyanya, kugona kwayo kuyerera kunowedzera uye viscosity yayo inoderera.
Pane zvinhu zvakasiyana-siyana zvinokanganisa hukama pakati pekushisa uye viscosity muHPMC.Semuenzaniso, mamwe ma solutes aripo mumvura anogona kukanganisa viscosity, sezvinoita pH yemvura.Kazhinji, zvisinei, kune hukama hwakasiyana pakati peviscosity uye tembiricha muHPMC nekuda kwekuita kwekushisa pane hydrogen bonding uye mamorekuru kupindirana kwemaketani e cellulose muHPMC.
Kana HPMC ichiiswa kune yakaderera tembiricha, iyo cellulose maketani anowedzera kuomarara, izvo zvinotungamira kuwedzera hydrogen bonding.Aya mabhondi ehaidhirojeni anoita kuti zvinhu zvirambe zvichiramba zvichiyerera, zvichibva zvawedzera viscosity yayo.Sezvineiwo, apo maHPMC akaiswa pasi pekupisa kwakanyanya, maketani e cellulose akawedzera kuchinjika, izvo zvakakonzera kushomeka kwehydrogen bond.Izvi zvinoderedza kuramba kwechinhu ichi kuyerera, zvichikonzera kuderera kwe viscosity.
Izvo zvakakosha kucherechedza kuti kunyangwe paine kazhinji hukama hwakasiyana pakati pe viscosity uye tembiricha yeHPMC, izvi hazvisi nguva dzose kune ese marudzi eHPMC.Hukama chaihwo pakati peviscosity uye tembiricha inogona kusiyana zvichienderana nemaitiro ekugadzira uye iyo chaiyo giredhi reHPMC rinoshandiswa.
HPMC chinhu multifunctional chinoshandiswa nevakawanda mumaindasitiri akasiyana-siyana ayo thickening uye emulsifying zvinhu.Iko viscosity yeHPMC inotsamira pane zvakati wandei, zvinosanganisira kuwanda kwechinhu uye tembiricha iyo inoburitswa.Kazhinji, viscosity yeHPMC inopesana nekushisa, zvinoreva kuti sezvo kutonhora kunoderera, viscosity inowedzera.Izvi zvinokonzerwa nemhedzisiro yekushisa pane iyo hydrogen bonding uye mamorekuru kupindirana kwemaketani e cellulose mukati meHPMC.
Nguva yekutumira: Sep-08-2023