HPMC, los yog hydroxypropyl methylcellulose, yog ib tug ntau yam polymer muab tau los ntawm cellulose, ib yam khoom muaj nyob rau hauv lub cell phab ntsa ntawm cov nroj tsuag. HPMC-raws li cov ntaub ntawv tau txais kev pom zoo thoob plaws ntau lub lag luam vim lawv cov khoom tshwj xeeb thiab ntau yam kev siv.
Taw qhia rau HPMC:
Hydroxypropyl methylcellulose (HPMC) yog semi-synthetic, dej-soluble polymer muab los ntawm cellulose. Nws feem ntau yog siv los ua cov thickener, binder, emulsifier, thiab zaj duab xis-tsim tus neeg sawv cev hauv ntau qhov kev lag luam, suav nrog tshuaj, khoom noj khoom haus, kev tsim kho, tshuaj pleev ib ce, thiab cov khoom tu tus kheej.
Cov yam ntxwv ntawm HPMC-raws li cov ntaub ntawv:
Dej Solubility: HPMC nthuav tawm cov dej solubility zoo heev, ua rau nws tsim nyog siv rau hauv cov tshuaj aqueous thiab formulations.
Viscosity Control: Nws ua hauj lwm raws li ib tug zoo thickening tus neeg sawv cev, tso cai meej tswj lub viscosity ntawm kev daws thiab formulations.
Zaj duab xis-Forming Properties: HPMC tuaj yeem tsim cov yeeb yaj kiab meej, hloov tau yooj yim thaum ziab, ua rau nws muaj txiaj ntsig zoo hauv cov txheej txheem, cov yeeb yaj kiab, thiab tswj-tso tshuaj xa cov tshuab.
Kev ruaj ntseg: HPMC-raws li cov ntaub ntawv muab kev ruaj ntseg zoo tshaj ntau yam ntawm pH thiab kub kub.
Biodegradability: Tau muab los ntawm cellulose, HPMC yog biodegradable, ua rau nws ib puag ncig tus phooj ywg piv rau hluavtaws polymers.
3.Kev siv ntawm HPMC-raws li cov ntaub ntawv:
(1) Pharmaceuticals:
Tablet Formulation: HPMC yog dav siv los ua ib qho kev sib khi thiab disintegrant hauv cov ntsiav tshuaj formulations, muab kev tswj kev tso tawm thiab txhim kho cov tshuaj tawg.
Tshuaj pleev ib ce: Nws yog siv nyob rau hauv cov tshuaj pleev, cream, thiab gels raws li ib tug viscosity modifier thiab emulsifier.
Tswj-tso Systems: HPMC-raws li matrices yog ua hauj lwm nyob rau hauv sustained-tso thiab lub hom phiaj xa tshuaj.
(2) Kev lag luam zaub mov:
Thickening Agent: HPMC yog siv los ua kom tuab thiab ruaj khov cov khoom noj xws li kua ntses, kua zaub, thiab khoom qab zib.
Fat Replacement: Nws tuaj yeem siv los ua cov roj hloov pauv hauv cov khoom noj muaj roj tsawg lossis tsis muaj rog los txhim kho kev ntxhib los mos thiab qhov ncauj.
(3) Kev tsim kho:
Mortars thiab Plasters: HPMC txhim kho kev ua haujlwm, kev sib khi, thiab dej tuav hauv cov cement-based mortars thiab plasters.
Pobzeb Adhesives: Nws txhim kho lub zog sib txuas thiab qhib lub sijhawm ntawm cov nplais nplaum, txhim kho lawv cov kev ua tau zoo.
(4) Tshuaj pleev ib ce thiab kho tus kheej:
Cov Khoom Siv Kho Hniav: HPMC tau muab tso rau hauv cov tshuaj zawv plaub hau, tshuaj kho mob, thiab cov khoom siv kho kom zoo nkauj rau nws cov thickening thiab zaj duab xis-tsim cov khoom.
Cov Khoom Siv Kho Hniav: Nws yog siv rau hauv cov tshuaj pleev ib ce, tshuaj pleev, thiab tshuaj pleev thaiv hnub ua lub stabilizer thiab emulsifier.
Synthesis Methods ntawm HPMC:
HPMC yog synthesized los ntawm ib tug series ntawm tshuaj hloov kho ntawm cellulose. Cov txheej txheem suav nrog etherification ntawm cellulose nrog propylene oxide thiab methyl chloride los qhia hydroxypropyl thiab methyl pawg, feem. Lub degree ntawm kev hloov pauv (DS) ntawm hydroxypropyl thiab methyl pawg tuaj yeem tswj tau los kho cov khoom ntawm HPMC rau cov ntawv thov tshwj xeeb.
(5) Kev nce qib tsis ntev los no thiab kev tshawb fawb Trends:
Nanocomposites: Cov kws tshawb fawb tab tom tshawb nrhiav kev sib koom ua ke ntawm nanoparticles rau hauv HPMC matrices los txhim kho cov khoom siv kho tshuab, tshuaj muaj peev xwm thauj khoom, thiab tswj kev tso tawm tus cwj pwm.
3D Printing: HPMC-raws li hydrogels tau raug tshawb xyuas rau kev siv 3D bioprinting ntawm cov ntaub so ntswg scaffolds thiab tshuaj xa tshuab vim lawv cov biocompatibility thiab tunable zog.
Cov Khoom Siv Ntse: HPMC-raws li cov ntaub ntawv raug tsim los teb rau cov stimuli sab nraud xws li pH, qhov kub thiab txias, thiab lub teeb, ua kom muaj kev loj hlob ntawm kev xa tshuaj ntse thiab sensors.
Bioinks: HPMC-raws li bioinks tau txais kev saib xyuas rau lawv lub peev xwm hauv kev siv bioprinting, ua rau kev tsim cov ntaub so ntswg nyuaj nrog cov cell viability thiab spatial tswj.
HPMC-raws li cov ntaub ntawv muaj ntau qhov zoo ntawm ntau yam kev lag luam, suav nrog tshuaj, khoom noj, kev tsim kho, thiab tshuaj pleev ib ce. Nrog lawv cov khoom sib xyaw tshwj xeeb, suav nrog cov dej solubility, viscosity tswj, thiab biodegradability, HPMC-raws li cov ntaub ntawv txuas ntxiv tsav kev tsim kho tshiab hauv cov ntaub ntawv tshawb fawb, ua rau kev txhim kho cov txheej txheem xa tshuaj, khoom noj khoom haus, cov ntaub ntawv tsim kho, thiab cov ntaub so ntswg bioprinted. Raws li kev tshawb fawb hauv daim teb no tau nce mus lawm, peb tuaj yeem cia siab tias yuav muaj kev cuam tshuam ntxiv thiab kev siv tshiab ntawm HPMC-raws li cov ntaub ntawv yav tom ntej.
Post lub sij hawm: May-08-2024