Tuaj yeem nkaummc thiab cmc sib tov
Methyl Celluloseyog dawb lossis dawb zoo li fibrous lossis granular hmoov; Odless, tsis tau. Cov khoom no hauv dej o mus rau hauv qhov tseeb lossis me ntsis turbid colloidal tov; Insoluble nyob rau hauv tsis muaj ethanol, chloroform lossis diethyl ether. Nws yog sai sai dispersed thiab o hauv dej kub ntawm 80-90 ℃, thiab sai sai yaj tom qab txias. Cov tshuaj aqueous yog qhov ruaj khov nyob rau hauv chav tsev kub, thiab tuaj yeem gel ntawm qhov kub thiab txias, thiab cov gel tuaj yeem hloov pauv nrog qhov ntsuas kub.
Nws muaj cov wettability zoo heev, cov nplaum, thickening, emulsification, dej tuav thiab zaj duab xis tsim, nrog rau roj impermility. Cov yeeb yaj kiab muaj qhov nyuaj heev, hloov tau yooj yim thiab pob tshab. Vim tias nws tsis yog-ionic, nws tuaj yeem sib haum nrog lwm cov ph2 - yog yooj yim rau ntsev tawm lossis cov tshuaj tsw qab, ntom ntom, ceev 0.5-0.7 g / cubic Ib xees, yuav luag tsis muaj ntxhiab, tasua, hygroscopic. Yooj yim rau tawg hauv dej rau hauv pob tshab gelatinous daws, insoluble hauv ethanol thiab lwm yam kuab tshuaj organic.
Thaum cov photous kua yog 6.5 - 8.5 - 8.5, lub viscosity ntawm cov slurry txo qis heev thaum lub p p p p p p p p p p p p p p p p p p p p p pX. Yooj yim soluble hauv dej, pob tshab; Nws yog qhov ruaj khov nyob rau hauv alkaline tov, thiab yooj yim rau hydryze nyob rau hauv rooj plaub ntawm acid. Thaum tus nqi py yog 2-3, nag lossis daus, thiab nag lossis daus tseem yuav tshwm sim nyob rau hauv cov ntaub ntawv ntawm multiven stanbul. HydroxyPropy cellulose, tseem hu ua hydroxypropyl cellulose, yog cov kev xaiv hydrothyl metylropy, nyob rau hauv Alkaline cov xwm txheej los ntawm kev cai lij choj tshwj xeeb los ntawm Alkaub kib thiab kev npaj.
Soluble hauv dej thiab feem ntau polar c thiab cov dej uas tsim nyog ntawm ethanol / dej, tsis muaj etetone, tsis muaj ethadiaethane, thiab lwm yam dej txias rau hauv qhov ntshiab lossis me ntsis turboal daws. Cov tshuaj aqueous muaj cov haujlwm saum npoo av, siab transparency thiab ruaj khov ua tau zoo.HPMCmuaj cov cuab yeej ntawm kub gel. Tom qab cua sov, cov khoom muaj aqueous daws teeb meem gel nag lossis daus, thiab tom qab ntawd yaj tom qab txias. Qhov kub thiab txias ntawm cov specifications sib txawv txawv.
Lub Sijhawm Post: Apr-25-2024