Hydroxypropyl methylcellulose (HPMC)chinhu chakakosha chemvura-soluble cellulose derivative ine huwandu hwakawanda hwekushandisa, kunyanya mumishonga, chikafu, zvizorwa, kuvaka uye mamwe maindasitiri minda. HPMC iupfu chena kana isina-chena, isinganakidze uye isinganhuwidzi inonyungudika mumvura uye inogona kugadzira mhinduro yakajeka, ine viscous. Hunhu hwayo hunogona kuongororwa kubva kune akawanda maficha akadai semakemikari chimiro, zvimiro zvemuviri, uye minda yekushandisa.
1. Chimiro chemakemikari uye kugadzirira
HPMC chigadzirwa chemakemikari chinowanikwa nemethylating uye hydroxypropylating natural cellulose. Chimiro chayo chinosanganisira mapoka maviri anoshanda: imwe ndeye methyl (-OCH₃) uye imwe yacho hydroxypropyl (-OCH₂CHOHCH₃). Kuunzwa kwemapoka maviri aya kunoita kuti HPMC inyungudike mumvura, ishande, uye ine solubility yakasiyana, viscosity uye humwe hunhu.
Iyo cellulose-based skeleton ichiri kuchengetwa mune molecular chimiro cheHPMC, inova yemapolysaccharides echisikigo uye ine yakanaka biocompatibility uye biodegradability. Nekuti iyo molecule ine akasiyana anoshanda mapoka, kunyungudika kwayo kwemvura, viscosity uye kugadzikana kunogona kudzorwa zvinoenderana nemamiriro ekuita.
2. Solubility uye viscosity
Chinhu chinocherechedzwa cheHPMC ndechekunyungudika kwayo kwemvura. HPMC ine akasiyana mamolecular uremu uye madhigirii akasiyana ekutsiva ane akasiyana solubility uye viscosity. HPMC inogona kunyungudika nekukurumidza mumvura inotonhora kuita yakagadzikana colloidal mhinduro, uye haina kukanganiswa zvakanyanya nekushisa kwemvura uye pH yemvura.
Zvichienderana nerudzi uye dhigirii rezvinotsiva, iyo viscosity yeHPMC inogona kugadziridzwa munzvimbo dzakasiyana. Kazhinji kutaura, mhinduro ine mvura yeHPMC ine imwe viscosity uye inogona kushandiswa seyakakora, inonamira uye inodzikamisa. Iyo viscosity yemushonga wayo wemvura inogona kudzorwa nekugadzirisa huremu hwayo hwemamorekuru uye dhigirii rekutsiva, uye yakajairika viscosity renji inobva kumazana kusvika kuzviuru zvemamilipascals masekonzi (mPa s).
3. Kugadzikana kwekushisa
HPMC ine kugadzikana kwakanaka kwekupisa. Pasi pemamiriro ekupisa kwepamusoro, chimiro chemakemikari uye zvimiro zveHPMC zvinoramba zvakagadzikana, uye nzvimbo yekunyungudika inowanzokwira kupfuura 200 ° C. Naizvozvo, inoita zvakanaka mune mamwe maapplication anoda epamusoro tembiricha mamiriro. Kunyanya mumaindasitiri ezvekudya nemishonga, HPMC inogona kumirisana nemamiriro ekunze akaomarara kana ichishandiswa seyakakora kana inodzorwa kuburitsa zvinhu.
4. Mechanical simba uye gelation
HPMC mhinduro ine yakakwira mechanic simba uye elasticity, uye inogona kugadzira gel chimiro pasi pemamwe mamiriro. Mune mamwe maindasitiri maapplication, HPMC inowanzo shandiswa kugadzira akagadzikana gels kana mafirimu, kunyanya muminda yemishonga, kurongedza chikafu, zvekuzora, nezvimwe, zvekudzora kuburitswa kwezvinodhaka, kukora, kudzikamisa uye encapsulation yezvikamu.
5. Biocompatibility uye biodegradability
Sezvo HPMC inotorwa kubva kune yakasikwa cellulose, ine biocompatibility yakanaka, inenge isina biotoxicity, uye inogona kukurumidza kuderedzwa mumuviri. Iyi ficha inoita kuti ive inowanzoshandiswa muindasitiri yemishonga, kunyanya yemishonga yemuromo uye inodzorwa kuburitswa gadziriro, iyo inogona kuvandudza bioavailability yemishonga nekudzora kuburitswa kwezvinodhaka.
6. Chiitiko chepamusoro
HPMC ine chimwe chiitiko chepamusoro, chinogona kuderedza kushushikana kwepamusoro kwemhinduro uye kuwedzera dispersibility uye kunyorova kwemvura. Ndiwo hunhu uhu hunoita kuti HPMC ishandiswe zvakanyanya muzvizoro uye zvigadzirwa zvekuchengeta munhu, senge zvinopfuta, emulsifiers uye zvinosimbisa mune lotions, makirimu, shampoos uye zvimwe zvigadzirwa.
7. Zvisiri-ionic zvinhu
Kusiyana nemamwe masikirwo epolysaccharide anobva, HPMC haisi-ionic. Iyo haina kuita neiyoni mune mhinduro uye saka haina kukanganiswa nekuchinja kweiyo electrolyte concentration. Iyi ficha inoita kuti HPMC ibatsire zvakanyanya mune mamwe akakosha maindasitiri maapplication, kunyanya kana aqueous mhinduro kana colloids ichida kugadzikana kwenguva yakareba, HPMC inogona kuona kugadzikana uye kuenderana.
8. Yakasiyana-siyana yekushandisa
Aya maitiro eHPMC anoita kuti ishandiswe zvakanyanya muminda yakawanda, kunyanya kusanganisira zvinotevera zvinhu:
Indasitiri yemishonga: HPMC inowanzoshandiswa se capsule shell yemishonga, mutakuri wemishonga inoramba ichisunungurwa, inonamatira, thickener, nezvimwewo. Mukugadzirira kwemishonga, HPMC inogona kunyatso kudzora kusunungurwa kwemishonga uye kuvandudza bioavailability yemishonga.
Indasitiri yechikafu: HPMC inoshandiswa zvakanyanya muzvinwiwa, jellies, ice creams, sosi uye zvimwe zvikafu se thickener, stabilizer, emulsifier uye gelling agent muindasitiri yechikafu, iyo inogona kuvandudza kuravira uye magadzirirwo echigadzirwa.
Zvizoro uye zvigadzirwa zvekuchengeta munhu: Mumunda wezvizoro, HPMC inoshandiswa mumakirimu, masiki kumeso, shampoos, zvigadzirwa zvekuchengetedza ganda uye zvimwe zvigadzirwa kuita basa rekukora, kudzikamisa, emulsification uye mamwe mabasa.
Indasitiri yekuvaka: HPMC inowanzo shandiswa seyakakora uye inochengetedza mvura mumiriri mune zvekuvaka. Zvishandiso zvakajairika zvinosanganisira simende dhaka, mataira anonamira, nezvimwe, izvo zvinogona kuvandudza mashandiro ekuvaka uye kugadzikana kwezvinhu.
Zvekurima: HPMC inogona zvakare kushandiswa seyakagadzika uye thickener mumishonga yezvipembenene kubatsira mushonga kugovera zvakaenzana muvhu uye kuvandudza mhedzisiro yekushandisa.
9. Kuchengetedzwa kwezvakatipoteredza uye kuenderera mberi
Sezvo chikamu chikuru cheHPMCinobva kune yakasikwa cellulose uye ine yakanaka biodegradability, ine zvakare zvimwe zvakanakira mukuchengetedza kwezvakatipoteredza. Seyakasimba yepolymer yakasikwa, kugadzirwa uye kushandiswa kweHPMC hakuzokonzerese mutoro wakawandisa pane zvakatipoteredza.
Hydroxypropyl methylcellulose (HPMC) ine zvinhu zvakawanda zvakanakisa, zvakadai semvura yakanaka solubility, viscosity control, thermal stability, biocompatibility, etc. Inoshandiswa zvakanyanya mumaindasitiri akawanda akadai semishonga, chikafu, cosmetics, uye kuvaka. Nezvayo zvisiri-ionic zvimiro, zvinochinjika zvemuviri uye makemikari zvimiro, uye kushamwaridzana kwezvakatipoteredza, HPMC inoonekwa seyakanyanya kuvimbisa polymer zvinhu. Mune ramangwana indasitiri uye tekinoroji kusimudzira, HPMC ichine yakakura tsvagiridzo uye mukana wekushandisa.
Nguva yekutumira: Zvita-13-2024