HydroxyPropyyl methylcellueculose (HPMC) yog qhov sib txuas lus dav dav hauv ntau yam kev lag luam, xws li ntawm cov kws tshuaj rau cov khoom lag luam. Nws cov versatility thiab kev ua haujlwm ua rau nws xaiv tau cov tshuaj ze ntawm cov ntawv thov. Ib lo lus nug uas feem ntau tshwm sim yog seb HPMC yog cog raws lossis tau los ntawm cov khoom tsiaj.
1.Origins ntawm HPMC:
HPMC yog ib nrab hluavtaws polymer muab tau los ntawm cellulose, uas yog ib txwm tshwm sim hauv cov phab ntsa ntawm tes ntawm cov nroj tsuag. Cellulose nws tus kheej yog tsim los ntawm cov chav dej harcose sib txuas ua ke sib txuas ua ke, ua cov saw ntev. HPMC yog tau los ntawm kev hloov kho tshuaj lom neeg ntawm cellulose, tshwj xeeb los ntawm cov pab pawg ntawm hydroxy thiab hydroxypropyl pawg.
2.Production txheej txheem:
Kev tsim HPMC muaj ntau cov kauj ruam, pib nrog kev rho tawm ntawm cellulose los ntawm cov ntoo lossis cov paj rwb. Thaum muab rho tawm, lub cellulose undergoes tshuaj hloov kho los qhia hydroxypropyl thiab methoxy pawg. Tus txheej txheem no feem ntau yog kev kho mob nrog etheri, ua raws los ntawm Ethetification siv cov tshuaj pleev cov oxylene oxide thiab methyl chloride.
Thaum lub sij hawm etherification, hydroxyproprorropyl pawg tau qhia rau copart dej solubility thiab lwm yam kev xav tau rau lub cellulose molecule. Metheboxy pawg, ntawm qhov tod tes, ua rau muaj kev ruaj ntseg tag nrho thiab viscosity ntawm lub txiaj ntsig HPMC. Cov qib ntawm qhov hloov pauv (DS) ntawm cov pab pawg hydroxypropyl tuaj yeem tswj hwm kom tailor rau tailor cov khoom ntawm HPMC rau cov ntawv thov tshwj xeeb.
3.Clant-based-based ntawm HPMC:
Muab hais tias HPMC yog muab tau los ntawm cellulose, uas yog muaj ntau nyob rau hauv cov nroj tsuag qhov chaw, nws yog inherently cog-raws li. Thawj cov ntaub ntawv raw hauv kev tsim cov hapmc-ntoo pulp thiab paj rwb ninters-yog muab los ntawm cov nroj tsuag. Tsis zoo li lwm yam lwm cov polymers lossis ntxiv rau cov khoom tsiaj, xws li gelatin lossis qee yam waxes, HPMC yog pub dawb los ntawm cov khoom xyaw tsiaj.
Tsis tas li ntawd, HPMC ua tau raws li cov qauv rau raug txiav txim siab vegan-phooj ywg zoo, raws li nws tsis koom nrog kev siv tsiaj rawing lossis ua AIDS. Qhov kev pom zoo no tshwj xeeb rau cov neeg siv khoom uas ua raws li cov khoom noj cog qoob loo lossis muaj kev txiav txim siab zoo hais txog kev siv cov tsiaj tsiaj.
4.applications thiab cov txiaj ntsig:
Cov nroj tsuag-based xwm ntawm HPMC pab txhawb rau nws thoob plaws kev lees txais thiab siv thoob plaws kev lag luam. Nyob rau hauv cov tshuaj ntsuam kws tshuaj, HPMC feem ntau siv raws li cov khoom siv tshuaj kho mob xws li cov ntsiav tshuaj, tsiav tshuaj, thiab raug ncua. Nws lub peev xwm los tsim cov gels ruaj khov, thiab txhim kho cov ntsiav tshuaj disintegration ua nws cov khoom muaj txiaj ntsig zoo hauv cov tshuaj.
Hauv kev lag luam khoom noj khoom haus, HPMC pabcuam ua cov tuab, stabilizer, thiab emulsifier hauv ntau cov khoom ci, cov khoom siv mis, thiab dej haus. Nws cov nroj tsuag cog ua ke nrog cov neeg tau txais kev pab neeg tau thov rau cov khoom noj khoom haus zoo nkauj thiab muaj kev sib luag hauv cov khoom noj.
HPMC nrhiav tau cov ntawv thov hauv cov khoom siv tsim kho, uas tau siv los ua cov khoom siv rov qab kho, thiab cov nplaum hauv cov khoom lag luam xws li, plasters, thiab pobzeb cov khoom nplaum. Nws cov nroj tsuag-based xwm ua nws qhov kev xaiv txaus nyiam rau ib puag ncig kev ua haujlwm tsim qauv.
HydroxyPropyyl methylcellulose (HPMC) yog cov polymer ntau yam los ntawm cellulose, lub ntuj tivthaiv ntawm tsob ntoo cell phab ntsa. Nws cov txheej txheem ntau lawm koom nrog tshuaj lom neeg ntawm cellulose muab rho tawm los ntawm kev cog qoob loo, ua rau tsob ntoo cog qoob loo. Raws li qhov tshwm sim, HPMC tsim nyog rau siv nyob rau hauv ntau yam kev lag luam, suav nrog kev siv tshuaj, thiab nws cov nroj tsuag ntoo uas nyiam rau cov khoom xyaw ntuj thiab muaj cov khoom xyaw muaj zog. Los ntawm kev nkag siab txog cov nroj tsuag-raws li HPMC, cov neeg tsim khoom lag luam thiab cov neeg siv khoom zoo ib yam tuaj yeem paub cov hom phiaj thiab cov peev txheej hauv kev ruaj khov.
Lub Sijhawm Post: Feb-18-2025