Hydroxyethyl Cellulose Ether

Hydroxyethyl cellulose ether yog non-ionic dej-soluble polymer, soluble hauv dej kub thiab txias.Hydroxyethyl cellulose ether muaj ntau yam viscosities, thiab tag nrho cov aqueous daws yog non-Newtonian.

Hydroxyethyl cellulose ether muaj dej zoo heev.Nws cov tshuaj aqueous yog du thiab zoo ib yam, nrog zoo fluidity thiab leveling

Cov hauv qab no yog cov qauv zoo tagnrho molecular mis ntawm hydroxyethyl cellulose ether:

N = degree of aggregation

Muaj peb pawg hydroxyl ntawm txhua chav tsev anhydroglucose hauv cellulose, uas tau kho nrog alkali hauv aqueous sodium hydroxide tov kom tau cellulose sodium ntsev, thiab tom qab ntawd nkag mus rau etherification cov tshuaj tiv thaiv nrog ethylene oxide los tsim hydroxyethyl cellulose ether.Nyob rau hauv tus txheej txheem ntawm synthesizing HEC, ethylene oxide tsis tau tsuas yog hloov cov hydroxyl pawg ntawm cellulose, tab sis kuj undergo ib tug saw polymerization cov tshuaj tiv thaiv nrog cov hydroxyl pawg nyob rau hauv cov pab pawg neeg hloov.