HPMC, lossis hydroxypropyl methylcellulose, yog cov polymer uas muaj ntau yam los ntawm cellulose, ib yam khoom ntuj uas pom muaj nyob rau hauv cov phab ntsa ntawm cov nroj tsuag. Cov ntaub ntawv raws li HPMC tau txais kev saib xyuas tseem ceeb thoob plaws ntau yam lag luam vim lawv cov yam ntxwv tshwj xeeb thiab ntau yam kev siv.
Kev Taw Qhia Txog HPMC:
Hydroxypropyl methylcellulose (HPMC) yog ib qho polymer semi-synthetic, dej-soluble uas tau los ntawm cellulose. Nws feem ntau siv ua thickener, binder, emulsifier, thiab film-forming agent hauv ntau yam lag luam, suav nrog tshuaj, khoom noj, kev tsim kho, tshuaj pleev ib ce, thiab cov khoom siv tu tus kheej.
Cov yam ntxwv ntawm HPMC-raws li Cov Khoom Siv:
Kev Yaj Dej: HPMC ua rau pom kev yaj dej zoo heev, ua rau nws tsim nyog siv rau hauv cov kua dej thiab cov qauv.
Kev Tswj Xyuas Viscosity: Nws ua haujlwm ua tus neeg sawv cev thickening zoo, tso cai rau kev tswj hwm qhov viscosity ntawm cov tshuaj thiab cov qauv.
Cov Khoom Siv Ua Yeeb Yaj Kiab: HPMC tuaj yeem tsim cov yeeb yaj kiab meej, yoog tau thaum qhuav, ua rau nws muaj txiaj ntsig zoo hauv kev pleev xim, cov yeeb yaj kiab, thiab cov txheej txheem xa tshuaj uas tswj tau.
Kev Ruaj Ntseg: Cov ntaub ntawv raws li HPMC muab kev ruaj ntseg zoo dhau ntawm ntau yam pH thiab qhov kub thiab txias.
Kev puas tsuaj ntawm cov khoom siv hauv lub cev: Vim yog cov cellulose, HPMC yog biodegradable, ua rau nws zoo rau ib puag ncig piv rau cov polymers hluavtaws.
3. Cov ntaub ntawv siv HPMC:
(1) Tshuaj:
Kev Tsim Tshuaj Ntsuas: HPMC yog siv dav ua tus binder thiab disintegrant hauv cov qauv tshuaj ntsuas, muab kev tso tawm tswj thiab txhim kho kev yaj tshuaj.
Cov Qauv Tshuaj Pleev: Nws yog siv rau hauv cov tshuaj pleev, tshuaj pleev, thiab cov gels ua tus hloov pauv viscosity thiab emulsifier.
Cov Txheej Txheem Tswj-Tso Tawm: Cov matrices raws li HPMC yog siv rau hauv kev tso tawm tshuaj mus tas li thiab cov txheej txheem xa tshuaj tsom mus rau.
(2) Kev Lag Luam Khoom Noj:
Tus Neeg Sawv Cev Ua Kom Tuab: HPMC siv los ua kom tuab thiab ruaj khov cov khoom noj xws li cov kua ntses, kua zaub, thiab khoom qab zib.
Kev Hloov Rog: Nws tuaj yeem siv ua cov khoom hloov rog hauv cov khoom noj uas muaj roj tsawg lossis tsis muaj roj kom txhim kho cov qauv thiab qhov ncauj.
(3) Kev Tsim Kho:
Cov Mortars thiab Plasters: HPMC txhim kho kev ua haujlwm tau zoo, kev nplaum, thiab kev khaws cia dej hauv cov cement-based mortars thiab plasters.
Cov Nplaum Rau Pobzeb: Nws ua rau lub zog sib txuas thiab lub sijhawm qhib ntawm cov nplaum rau pob zeb ua kom zoo dua, txhim kho lawv cov kev ua tau zoo.
(4) Tshuaj pleev ib ce thiab kev saib xyuas tus kheej:
Cov Khoom Siv Saib Xyuas Plaub Hau: HPMC tau muab tso rau hauv cov tshuaj zawv plaub hau, cov tshuaj pleev ib ce, thiab cov khoom styling rau nws cov khoom ua kom tuab thiab ua zaj duab xis.
Cov Qauv Saib Xyuas Tawv Nqaij: Nws yog siv rau hauv cov tshuaj pleev, tshuaj pleev, thiab tshuaj pleev thaiv hnub ua tus stabilizer thiab emulsifier.
Cov Txheej Txheem Synthesis ntawm HPMC:
HPMC yog synthesized los ntawm ntau yam kev hloov kho tshuaj ntawm cellulose. Cov txheej txheem no suav nrog etherification ntawm cellulose nrog propylene oxide thiab methyl chloride los qhia hydroxypropyl thiab methyl pawg, raws li. Qib ntawm kev hloov pauv (DS) ntawm hydroxypropyl thiab methyl pawg tuaj yeem tswj tau los kho cov yam ntxwv ntawm HPMC rau cov ntawv thov tshwj xeeb.
（5） Kev Txhim Kho Tshiab thiab Kev Tshawb Fawb Tshiab:
Nanocomposites: Cov kws tshawb nrhiav tab tom tshawb nrhiav kev koom ua ke ntawm nanoparticles rau hauv HPMC matrices los txhim kho cov khoom siv kho tshuab, muaj peev xwm thauj tshuaj, thiab tswj kev tso tawm tshuaj.
3D Luam Ntawv: HPMC-based hydrogels tab tom raug tshawb nrhiav rau kev siv hauv 3D bioprinting ntawm cov ntaub so ntswg scaffolds thiab cov kab ke xa tshuaj vim lawv cov biocompatibility thiab cov khoom hloov pauv tau.
Cov Khoom Siv Ntse: Cov khoom siv raws li HPMC tau raug tsim los teb rau cov kev cuam tshuam sab nraud xws li pH, kub, thiab lub teeb, ua rau muaj kev txhim kho cov txheej txheem xa tshuaj ntse thiab cov sensors.
Bioinks: Cov bioinks raws li HPMC tau txais kev saib xyuas rau lawv lub peev xwm hauv kev siv bioprinting, ua rau muaj peev xwm tsim cov qauv ntaub so ntswg nyuaj nrog kev muaj sia nyob siab thiab kev tswj hwm qhov chaw.
Cov ntaub ntawv ua los ntawm HPMC muaj ntau yam zoo rau ntau yam lag luam, suav nrog tshuaj, khoom noj, kev tsim kho, thiab tshuaj pleev ib ce. Nrog lawv cov khoom sib xyaw ua ke, suav nrog kev yaj dej, kev tswj viscosity, thiab kev lwj ntawm cov khoom, cov ntaub ntawv ua los ntawm HPMC txuas ntxiv tsav kev tsim kho tshiab hauv kev tshawb fawb txog cov khoom siv, ua rau muaj kev txhim kho cov txheej txheem xa tshuaj siab heev, cov khoom noj ua haujlwm tau zoo, cov ntaub ntawv tsim kho kom ruaj khov, thiab cov ntaub so ntswg bioprinted. Thaum kev tshawb fawb hauv daim teb no nce qib, peb tuaj yeem cia siab tias yuav muaj kev tshawb pom tshiab thiab kev siv cov ntaub ntawv ua los ntawm HPMC yav tom ntej.
Lub sijhawm tshaj tawm: Tsib Hlis-08-2024