A. V. Pirogov, O. V. Krokhin, M. M. Platonov, Ya. I. Deryugina, O. A. Shpigun
Journal of Chromatography A, 2000, 884(1-2), 31-39
ABSTRACT. Aliphatic ionene with hydroxyl group (2HP-8 ionene), mixed aliphatic-aromatic ionenes (3-Х and 6-Х-ionenes), aromatic ionene (Ph-Х ionene), and viologen (Dp-Х ionene) -polymers with quaternary nitrogen atoms in the main chain - served as modifiers in synthesising polyelectrolyte sorbents for ion chromatography. The selectivity these anion-exchangers was compared with those for aliphatic ionenes. It was found that aromatic ionenes having a rigid structure of polymer chains are similar to their aliphatic analogues with shorter chains with a high charge density. Polyelectrolyte sorbents based on aromatic ionenes show higher selectivity to aromatic acids (e.g. 1-naphthalenesulfonic acid) to compare with aliphatic ionenes due to specific pi-pi interactions.