Hydroxypropyl methylcellulose (HPMC) yog ntau yam khoom siv dav siv hauv tshuaj, zaub mov, tshuaj pleev ib ce, khoom siv hauv tsev thiab lwm yam. Nws yog ib qho uas tsis yog-ionic cellulose ether tau los ntawm kev hloov kho tshuaj ntawm natural cellulose, thiab nws cov qauv molecular muaj hydroxypropyl thiab methyl substituents. Cov yam ntxwv ntawm cov qauv no muab HPMC ntau yam khoom tshwj xeeb, ua rau nws ua tau zoo hauv ntau yam kev siv.
1. Zoo heev viscosity hloov thiab thickening zog
HPMC muaj zoo solubility nyob rau hauv aqueous tov thiab tuaj yeem tsim cov viscosity siab. Nws cov yam ntxwv viscosity tuaj yeem tswj tau los ntawm kev kho nws qhov hnyav molecular thiab qib kev hloov pauv. Qhov no ua rau HPMC feem ntau siv cov thickener thiab gelling tus neeg sawv cev hauv ntau qhov kev lag luam. Piv txwv li, hauv kev lag luam khoom noj khoom haus, HPMC tuaj yeem siv los ua kom khov dej khov, kua ntses thiab dej haus los txhim kho saj thiab kev ntxhib los mos.
2. ruaj khov zaj duab xis-forming zog
HPMC tuaj yeem tsim cov duab pob tshab thiab tawv ntawm ntau qhov chaw. Cov cuab yeej ua yeeb yaj kiab no tseem ceeb tshwj xeeb hauv kev kho mob. Hauv kev lag luam kws tshuaj, HPMC feem ntau yog siv rau cov ntsiav tshuaj txheej, uas tuaj yeem cais qhov kev sib cuag ntawm cov tshuaj thiab ib puag ncig sab nraud thiab txhim kho kev ruaj ntseg thiab tswj kev tso tawm ntawm cov tshuaj. Tsis tas li ntawd, hauv cov tshuaj pleev ib ce, HPMC tuaj yeem siv los ua cov yeeb yaj kiab tsim rau lub ntsej muag lub ntsej muag thiab cov khoom siv tawv nqaij txhawm rau txhim kho cov khoom lag luam.
3. Zoo ncua kev kawm ntawv thiab emulsification zog
HPMC muaj peev xwm ncua kev ncua thiab emulsification zoo, uas tuaj yeem ua kom ruaj khov ntawm cov kab ke dispersion thiab tiv thaiv particle sedimentation thiab stratification. Hauv kev lag luam txheej txheej, HPMC, ua cov thickener thiab stabilizer, tuaj yeem tiv thaiv cov sedimentation ntawm cov xim thiab txhim kho qhov sib xws thiab rheological zog ntawm txheej txheej. Hauv kev lag luam khoom noj khoom haus, HPMC tuaj yeem ruaj khov emulsions, tiv thaiv cov roj-dej sib cais, thiab txhim kho kev ntxhib los mos thiab saj ntawm cov khoom.
4. Biocompatibility thiab kev nyab xeeb
HPMC yog muab los ntawm ntuj cellulose thiab muaj biocompatibility zoo thiab kev nyab xeeb. Nws tsis yog absorbed los ntawm lub digestive system nyob rau hauv lub cev thiab tsis ua toxic tshua. Qhov no ua rau HPMC dav siv hauv kev lag luam tshuaj thiab zaub mov. Piv txwv li, hauv kev npaj tshuaj, HPMC feem ntau yog siv los tsim cov tshuaj tiv thaiv-tso tawm, ntsiav tshuaj thiab tshuaj ntsiav kom ntseeg tau tias muaj kev nyab xeeb thiab muaj txiaj ntsig zoo ntawm cov tshuaj. Hauv kev lag luam khoom noj khoom haus, HPMC tau pom zoo ua cov khoom noj ntxiv thiab siv dav hauv cov khoom noj xws li qhob cij, pastries, thiab cov khoom noj siv mis.
5. Thermal colloid zog
HPMC muaj cov khoom tshwj xeeb thermal colloid, uas yog, nws tsim cov gel thaum rhuab thiab rov ua dua tom qab txias. Cov cuab yeej no ua rau HPMC ua tau zoo hauv qee cov ntawv thov tshwj xeeb. Piv txwv li, nyob rau hauv kev npaj tshuaj, HPMC tuaj yeem siv rau encapsulation thiab tso tawm cov tshuaj tiv thaiv tshav kub. Hauv kev lag luam khoom noj khoom haus, HPMC tuaj yeem siv rau hauv kev ua cov khoom noj uas muaj cua sov los txhim kho kev ntxhib los mos thiab ruaj khov ntawm cov khoom.
6. Dav pH adaptability
HPMC muaj kev ua haujlwm ruaj khov nyob rau hauv ntau qhov pH, uas ua rau nws tswj nws cov thickening, stabilization thiab ua yeeb yaj kiab ua haujlwm hauv ntau qhov chaw acidic lossis alkaline. Piv txwv li, hauv cov khoom siv hauv tsev, HPMC tuaj yeem siv rau kev ua kom tuab thiab dej tuav cov khoom siv cement-based thiab gypsum, txhim kho kev tsim kho thiab ua haujlwm ntev.
7. Kev tiv thaiv ib puag ncig thiab kev ruaj ntseg
HPMC yog muab los ntawm cov khoom siv hluav taws xob txuas ntxiv dua tshiab thiab muaj biodegradability zoo thiab kev phooj ywg ib puag ncig. Hauv cov ntsiab lus ntawm kev paub txog ib puag ncig niaj hnub no, HPMC, uas yog cov khoom siv ruaj khov, tau txais kev saib xyuas ntau dua thiab siv tau. Piv txwv li, nyob rau hauv ib puag ncig tus phooj ywg coatings thiab cov ntaub ntawv hauv tsev, HPMC, raws li ib tug natural thickener thiab stabilizer, hloov cov tsoos tshuaj hluavtaws cov ntaub ntawv thiab txo ib puag ncig muaj kuab paug.
Hydroxypropyl methylcellulose (HPMC) muaj cov ntawv thov dav dav thiab lub luag haujlwm tseem ceeb hauv kev lag luam tshuaj, khoom noj, tshuaj pleev ib ce, khoom siv hauv tsev, thiab lwm yam. yam ntxwv tiv thaiv ib puag ncig. Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis tsis tu ncua thiab txhim kho tib neeg cov kev xav tau rau kev noj qab haus huv thiab kev tiv thaiv ib puag ncig, daim ntawv thov ntawm HPMC yuav txuas ntxiv nthuav dav thiab ua lub luag haujlwm ntau dua.
Post lub sij hawm: Lub Xya hli ntuj-10-2024