HydroxyPropyyl methylcellose (HPMC) yog ib qho khoom siv hluav taws xob salthetic polymer thiab lub cellulose derivative. Nws yog cov dej tsis-ionic-soluble polymer ua los ntawm kev hloov kho lub cev hloov kho ntuj. Cov txheej txheem npaj ntawm HPMC feem ntau suav nrog cov kauj ruam hauv qab no: alkalizing cellulose los ntawm alkalia oxide los tsim hydroxypropyl thiab methyl chaw los ua HPMC.
Tshuaj lom neeg cov qauv thiab cov khoom ntawm HPMC
Chav theem pib ntawm HPMC yog β-d-pyranose qab goospose, uas tseem yog theem pib ntawm cellulose. Hauv HPMC, qee cov pab pawg hydroxyl (-H) yog hloov los ntawm cov pab pawg methoxy (-ochiv) thiab yog li cov pawg muaj sib txawv ntawm cov nkauj ntuj. Qhov no hloov pauv txhim kho cov solubility ntawm HPMC hauv dej thiab qee cov kuab tshuaj orgalic, thiab muaj kev ruaj khov zoo thiab muaj kev sib haum xeeb.
Thaum HPMC yog yaj hauv dej, nws tuaj yeem ua ib qho ruaj khov colloidal tov. Nws cov solubility yog cuam tshuam nrog hom thiab qib hloov chaw ntawm cov hloov chaw. Feem ntau hais lus, HPMC nrog cov ntsiab lus me me ntawm cov ntawv methyl dua muaj cov solubility zoo dua hauv cov dej txias, thaum Hydroxypropyl muaj solubility zoo dua hauv dej sov. Tsis tas li ntawd, HPMC cov kev daws teeb meem tau thim cov khoom siv thermogel ntau, uas yog, lawv gel thaum ua kom sov thiab yaj dua thaum txias.
Daim Ntawv Thov Ntawm Hpmc
Vim nws cov qauv tshuaj tshwj xeeb thiab cov khoom siv dag zog thiab cov khoom HPMC tau siv dav hauv ntau daim teb.
Cov ntaub ntawv tsim tsev: hauv cov ntaub ntawv tsim vaj tsev, HPMC feem ntau yog siv los ua cov neeg muaj kev tsim kho thiab cov khoom tsim kho ntawm cov khoom noj thiab cov khoom lag luam zoo. Nws kuj tseem tuaj yeem txhim kho cov nplaum, tawg kom tsis kam thiab lub zog tsis huv ntawm cug.
Tshuaj: Daim ntawv thov ntawm HPMC nyob rau hauv lub chaw muag tshuaj feem ntau yog suav cov khoom tso tawm txheej, tshuaj ntsiav rau cov ntsiav tshuaj. Vim tias HPMC yog tsis muaj tshuaj lom, tsis muaj kev cuam tshuam thiab muaj qhov zoo biocompatibility, nws yog dav siv nyob rau hauv kev tso tawm hauv kev tsim tawm thiab tswj-tso tawm npaj cov ntsiav tshuaj.
Khoom noj: hauv kev lag luam khoom noj khoom haus, HPMC yog siv los ua ntau yam khoom noj, yogurt, thiab lwm yam khoom noj thiab txuas ntxiv rau lub txee lub neej ntawm cov khoom noj.
Cov tshuaj pleev ib ce: Hauv thaj chaw tshuaj pleev ib ce, HPMC feem ntau siv los ua cov tuab rau emulsions, cream thiab gels. Nws tsis tsuas yog muab cov qauv zoo, tab sis kuj tseem ua cov yeeb yaj kiab moisturizing rau ntawm daim tawv nqaij saum npoo av, yog li ua ib lub moisturizing thiab tiv thaiv lub luag haujlwm.
Txheej Txheem Txheej Txheem: HPMC yog siv los ua cov tuab, dispersist thiab emulsifier rau kev ua tau kev tsim kho ntawm cov txheej txheem kev tsim kho thiab kev txhim kho theem thiab cov kab ntawm cov txheej txheem.
Qhov zoo thiab cov kev txwv ntawm HPMC
HPMC muaj ntau yam zoo, xws li cov dej solubility zoo, tshuaj lom neeg ruaj khov, tsis muaj txiaj ntsig thiab biocompatibility. Cov yam ntxwv no tau ua rau nws siv dav hauv ntau thaj teb. Txawm li cas los xij, HPMC kuj muaj qee qhov kev txwv. Piv txwv li, nyob rau hauv ib puag ncig muaj kub txog HPM yuav ua rau muaj qhov teeb meem tseem ceeb, uas yuav dhau los ua teeb meem hauv qee cov ntawv thov. Tsis tas li ntawd, HPMC muaj qhov ruaj khov nyob hauv cov ntsev siab cov ntsev daws, uas tseem txwv nws cov ntawv thov hauv qee qhov chaw tshwj xeeb.
HPMC yog ib qho tseem ceeb heev polymer. Nrog nws lub cev nqaij daim tawv thiab tshuaj lom neeg tshwj xeeb thiab kev thov kev siv zoo, nws tau siv dav siv hauv kev tsim kho, tshuaj, cov zaub mov, tshuaj pleev ib ce thiab pleev xim. Txawm hais tias nws muaj qee qhov kev txwv, daim ntawv thov teb HPMC tseem nthuav dav los ntawm kev tshawb nrhiav txuas ntxiv thiab kev txhim kho. Nrog rau kev txhim kho kev tshawb fawb thiab thev naus laus zis, HPMC yuav tsum ua lub luag haujlwm tseem ceeb hauv cov teb ntau.
Lub Sijhawm Post: Feb-17-2025