HydroxyPropylropulose (HPMC) yog ntau yam thiab ntau yam polymer uas yog rau lub cellule ether tsev neeg. Nws yog synthesized los ntawm cov tshuaj lom neeg ntawm cov tshuaj tiv thaiv los ntawm kev kho cov cellulose ntuj, cov tseem ceeb ntawm cov nroj tsuag ntawm cov nroj tsuag. Lub txiaj ntsig HPMC muaj cov teeb tsa tshwj xeeb ntawm cov khoom uas ua rau nws muaj txiaj ntsig nyob hauv kev lag luam.
1. Cov qauv siv tshuaj lom neeg thiab muaj pes tsawg leeg:
HPMC yog muab tau los ntawm cellulose, uas muaj cov chav ua si uas tau rov qab sib txuas los ntawm β-1,4-glycosidic bonds. Los ntawm kev hloov kho tshuaj lom neeg, hydroxypropyl thiab methoxy pawg tau qhia rau hauv lub cellulose cellebone. Cov qib ntawm kev hloov pauv (DS) ntawm cov pab pawg methroplopyl thiab methoxy pawg yuav sib txawv, ua rau cov qib kawm HPMC nrog cov khoom sib txawv.
Cov qauv tshuaj ntawm HPMC muab cov solubility thiab txoj kev ua kom muaj peev xwm ua tau zoo nyob rau ntau yam kev lag luam thoob plaws ntau yam kev lag luam.
2. Solubility thiab rheological khoom:
Ib qho ntawm cov khoom lag luam ntawm HPMC yog nws solubility hauv dej, ua nws lub soluble dej polymer. HPMC ua cov tshuaj ntshiab thiab khov kho thaum uas yaj hauv dej, thiab nws cov khoom siv hluav taws xob tau tuaj yeem hloov kho tau los ntawm kev hloov pauv qhov hnyav thiab qib hloov chaw. Cov kev siv solubility no thiab rheology ua HPMC haum rau ntau yam kev siv.
3. Zaj duab xis-ua kev ua tau zoo:
HPMC muaj cov yeeb yaj kiab zoo tshaj plaws thiab tuaj yeem tsim cov yeeb yaj kiab hloov tau thaum cov polymer yog yaj hauv dej. Cov cuab yeej no pom cov ntawv thov hauv cov tshuaj thiab khoom noj rau txheej txheej, encapsulating flavors thiab muab cov khoom thaiv ntawm cov khoom hauv cov yeeb yaj kiab.
4. Kev Siv Tshuaj Kho Mob:
HPMC tau dav siv nyob rau hauv kev lag luam kev lag luam yog rau nws cov kev lag luam ntau. Nws yog siv nyob rau hauv cov ntsiav tshuaj tsim yog ib phau ntawv sau npe, ua txhaum, zaj duab xis-ua tus neeg sawv cev thiab tus neeg sawv cev tso tseg. Cov polymer muaj peev xwm tswj cov yeeb tshuaj tso tawm thiab txhim kho kev ruaj ntseg yeeb tshuaj ua rau nws cov khoom tseem ceeb hauv kev tsim cov khoom noj.
5. Kev lag luam kev tsim kho:
Hauv kev tsim kho kev tsim kho, HPMC tau siv dav siv los ua cov neeg saib xyuas tuab rau cov khoom noj thiab cov khoom siv ua haujlwm xws li Mortars, Grouts thiab Plasters. Nws cov khoom siv rheological pab txhim kho kev ua haujlwm, sag tiv taus thiab adcesion, ua rau nws cov khoom tseem ceeb hauv cov ntaub ntawv hauv tsev.
6. Khoom noj khoom haus thiab tshuaj pleev ib ce:
Hauv kev lag luam khoom noj khoom haus, HPMC yog siv los ua cov tuab, emulsifier, thiab stabilizer nyob rau hauv ntau yam khoom, suav nrog cov kua ntses, thiab khoom noj siv mis. Nws nontoxic Xwm thiab muaj peev xwm ua cov gels ntshiab ua rau nws haum rau cov ntawv thov cov khoom noj.
Ib yam li ntawd, hauv kev lag luam tshuaj pleev ib yam, HPMC yog siv nyob rau hauv cov qauv xws li cream, tshuaj, thiab tshuaj zawv plaub hau vim nws cov thickening, thiab zaj duab xis-tsim cov khoom. Nws pab txhawb rau cov kev ntxhib los mos, viscosity thiab kev ruaj ntseg ntawm cov tshuaj pleev ib ce.
7. Cov xim thiab pleev xim:
HPMC yog siv los ua cov tuab thiab rheology kho hauv cov xim pleev xim rau hauv cov xim tsev thiab pleev xim. Nws txhim kho cov txheej txheej thov cov khoom, xws li xim pleev xim thiab txaws tsis kam, thaum tseem tab tom txhim kho qhov ua tau zoo ntawm txheej.
8. Yeeb yaj kiab:
Hauv cov qauv nplaum ua ke, HPMC ua raws li cov tuab thiab dej khaws cia. Nws lub peev xwm los tswj viscosity thiab txhim kho cov khoom nplaum ua nws muaj nuj nqis hauv kev tsim cov nplaum nyob rau hauv ntau yam kev lag luam, suav nrog kev sib tw Woodworking, suav nrog kev sib tw Woodworking, suav nrog kev sib tw Woodworking, suav nrog kev sib tw Woodworking, suav nrog kev sib tw Woodworking thiab ntawv ua ke.
9. Tshuaj Tso Tawm Txheej Txheem:
Kev tso tawm cov khoom xyaw nquag yog qhov tseem ceeb rau ntau kev lag luam, suav nrog cov tshuaj thiab kev ua liaj ua teb. HPMC feem ntau siv los tsim kev tso tawm cov tshuab vim tias nws muaj peev xwm los tsim ib qho kev tso tawm ntawm cov khoom tawm ntawm cov khoom siv sijhawm.
10. Biomedical Daim Ntawv Thov:
Hauv kev teb ntawm Biomedicine thiab cov ntaub so ntswg, HPMC tau tshawb nrhiav rau nws biocompatibility thiab peev xwm ua rau hydrogels. Cov hydrogels no tuaj yeem siv rau hauv cov tshuaj xa khoom, cov qhov txhab zoo, thiab cov ntaub so ntswg.
11. Ib puag ncig tiv thaiv cov yam ntxwv:
HPMC yog suav tias yog ib puag ncig ua phooj ywg zoo li nws tau muab los ntawm cov khoom siv txuas ntxiv dua tshiab thiab yog biodegradable. Nws siv nyob rau hauv ntau cov ntawv thov yog nyob rau hauv txoj kab nrog kev loj hlob thov rau kev ua kom ruaj khov thiab ib puag ncig cov ntaub ntawv.
12. Cov kev sib tw thiab kev saib xyuas:
Txawm hais tias HPMC tau siv dav, ntau txoj kev sib tw, suav nrog nws cov rhiab heev rau qhov kub, uas cuam tshuam nws cov khoom gel. Tsis tas li ntawd, kev hloov kho cov txheej txheem thiab tshuaj hloov kho tshuaj ntawm cellulose yuav tsum tau ua tib zoo saib xyuas ib puag ncig thiab kev nyab xeeb.
13. Kev tswj xyuas raws li:
Raws li muaj cov khoom siv hauv cov tshuaj, khoom noj thiab lwm cov neeg siv khoom siv, nws yog qhov tseem ceeb uas cov koom haum tswj hwm tau ua raws li. HPMC feem ntau ua tau raws cov kev cai tswj hwm, tab sis cov tuam ntxhab yuav tsum ua raws li cov lus qhia tshwj xeeb rau txhua daim ntawv thov.
Hauv kev xaus:
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Lub Sijhawm Post: Dec-28-2023