I-Polyethyleneimine (PEI) yipolymer enamasebe amaninzi eyenziwe nge-ethyleneimine monomers.Ngolwakhiwo lwayo lomxokelelwane omde, i-PEI ibonisa iipropathi ezincamathelayo ezibalaseleyo, iyenza ibe lolona khetho lufanelekileyo kwizicelo ezahlukeneyo, kubandakanywa neengubo zamaphepha, amalaphu, izinto zokuncamathelisa, kunye nokuguqulwa komphezulu.Ngaphaya koko, ubume be-cationic be-PEI buyivumela ukuba ibophelele ngokusebenzayo kwiisubstrates ezihlawuliswa kakubi, iphucula ukuguquguquka kwayo kumashishini ahlukeneyo.
Ukongeza kwiipropathi zayo zokuncamathelisa, i-PEI ikwabonisa amandla akhethekileyo okuthintela, aluncedo kwiindawo ezininzi ezifana nokucocwa kwamanzi amdaka, ukubanjwa kwe-CO2, kunye ne-catalysis.Ubunzima bayo obuphezulu be-molecular buvumela i-adsorption esebenzayo kwaye ekhethiweyo, eyenza ibe yinto exabisekileyo ekuhlanjululweni kweegesi kunye nolwelo.