1. HydroxyPropyl methyl cellulose soluble hauv dej txias, dej kub yaj yuav ntsib teeb meem. Tab sis nws gelation kub hauv dej kub yog qhov siab dua li ntawm methyl cellulose. Lub solubility ntawm methyl cellulose hauv dej txias kuj tseem txhim kho.
2. Lub viscosity ntawm hydroxypropyl cellulose muaj feem xyuam rau nws cov molecular hnyav, thiab qhov hnyav loj dua yog qhov viscosity ntau dua. Qhov kub yuav cuam tshuam nws cov viscosity, kub nce ntxiv, viscosity txo. Txawm li cas los xij, lub viscosity ntawm kev kub siab yog qis dua li methyl cellulose. Cov kev daws teeb meem yog ruaj khov thaum khaws cia ntawm chav tsev kub.
3. HydroxyPropyl cellulose yog ruaj khov rau kua qaub thiab alkali, thiab nws cov kua aqueous yog qhov ruaj khov heev hauv cov ph = 2 ~ 12. Caustic dej qab zib thiab txiv qaub dej tsis muaj kev cuam tshuam zoo rau nws cov khoom, tab sis alkali tuaj yeem nrawm nws cov kev sib cais thiab txhim kho lub viscosity ntawm tus lej PIN. HydroxyPropy cellulose tau ruaj khov rau cov ntsev dav dav, tab sis thaum cov viscrot ntawm hydroxypropyl cellulose kev daws teeb meem.
4. Cov dej khaws cia ntawm hydroxypropyl cellulose nyob ntawm nws cov nyiaj ntxiv, thiab lwm yam ntxiv rau methyl cellulose.
5. Cov nplaum ntawm hydroxypropal methylropy cellulose rau tshuaj kho kom zoo siab dua li methyl cellulose.
6. HydroxyPropy cellulose muaj cov enzyme tsis tshua zoo dua li methyl cellulose hauv kev daws teeb meem qis dua li methyl cellulose.
Lub Sijhawm Post: Sep-15-2022