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HydroxyPropylropy Cellulose (HPMC)
HydroxyPropy cellulose, piv txwv rau cov tshuaj pleev methyl me me (HPMC HydroxyprropenCethyluncellulose, cov lus luv), nws yog cov sib xyaw ua ke tsis-ionic cellulose ether. Nws yog lub shatthetic, tsis voos, tus neeg siv hluav taws xob feem ntau siv nyob rau hauv cov tshuaj pleev ib ce, lossis ua kom muaj kev zam rau hauv qhov ncauj, muaj nyob hauv ntau yam khoom lag luam. HydroxyPropyl cellulose tuaj yeem siv ua khoom noj ntxiv, emulsifier, thickener, tshem tawm tus neeg saib xyuas thiab tsiaj gelatin hloov.
Cov khoom Cov lus qhia Kev tshwm sim Cov hmoov dawb Kev Kub Ntxhov Kub 200min Discoloration kub 190-200 ℃ Viscosity 400 PH nqi 5 ~ 8 Ceev 1.39g / cm3 Carbonation kub 280-300 ℃ Ntaus Khoom Noj Khoom Haus Qib Zoo siab 99% Cov nro 42-56dyne / cm rau 2% kev daws teeb meem -
HydroxyPropyyl methylcellulose (MHPC)
HydroxyPropylenCelulose (MHPC) yog tsis muaj ntxhiab, cov pab pawg tsis muaj tshuaj tua kab mob ntawm cov tshuaj me me lossis cov roj solubility zoo. HPMC F60s yog qib siab-viscosity uas siv los ua tuab, thiab zaj duab xis, cov nplaum, thiab lwm yam kev siv.
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Hydroxyethyl cellulose (HEC)
Hydroxyethyl cellulose (HEC) yog tsis-ionic, dej-soluble polymer muab cov hmoov av ntawm cov cellulose los ntawm cov tshuaj pleev ib ce thiab cov hmoov tsis zoo, yooj yim solub hauv dej kub lossis dej txias Kev daws teeb meem viscous.When PH hauv kev daws 2 rau 12, txoj kev daws teeb meem yog qhov ruaj khov.Saib ib qho kev daws teeb meem dej, nws yuav tsis raug siv Nrog rau lwm yam kev ua haujlwm lossis cations thiab insensitive rau cov ntsev.
Tab sis HEC molecule muaj peev xwm tsim cov khoom siv esterification, etherification ntawm cov khoom siv eserification, etherication, yog li nws muaj peev xwm ua kom nws muaj peev xwm ua tau nws cov khoom muaj peev xwm thiab cov dej num zoo.
