Polyethyleneimine (PEI) yog ib qho khoom siv polymer uas muaj cov ethyleneimine monomers.Nrog nws cov qauv txuas ntev, PEI nthuav tawm cov khoom nplaum zoo heev, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau ntau yam kev siv, nrog rau cov ntawv txheej, textiles, adhesives, thiab kev hloov kho saum npoo.Tsis tas li ntawd, PEI qhov cationic xwm tso cai rau nws ua tau zoo khi rau qhov tsis zoo nqi substrates, txhim kho nws versatility nyob rau hauv txawv industries.
Ntxiv rau nws cov khoom nplaum, PEI tseem qhia txog qhov tshwj xeeb buffering peev xwm, uas muaj txiaj ntsig zoo hauv ntau qhov chaw xws li kev kho dej khib nyiab, CO2 ntes, thiab catalysis.Nws qhov hnyav molecular tso cai rau kev ua haujlwm zoo thiab xaiv adsorption, ua rau nws muaj txiaj ntsig zoo hauv kev ua kom huv ntawm cov pa roj thiab kua.