[1PS-197]
우수논문발표상 응모자Conductive and Stable Crosslinked Anion Exchange Membranes Based on Poly(4-Vinylbenzyl piperidine-co-4-Octylstyrene) : Effect of Degree of Crosslinking on Membrane Properties
발표자박승일 (숭실대학교)
연구책임자강범구 (숭실대학교)
Abstract
Anion exchange membranes (AEMs) are critical for the performance of anion exchange membrane water electrolyzers (AEMWEs). In this study, poly(4-vinylbenzyl piperidine-co-4-octylstyrene) copolymers with different mole ratios were synthesized via radical polymerization to investigate the effect of crosslinking degree on AEM properties. The copolymers possess an ether-free backbone and a balanced rigid/soft segment structure, providing good mechanical and chemical stability.
Crosslinking was achieved using 1,6-dibromohexane through a quaternization–crosslinking process, introducing piperidinium groups. With increasing crosslinking degree, the ion exchange capacity (IEC) and ion conductivity increased. Optimization of crosslinking effectively reduced the trade-off between ion conductivity and dimensional stability, leading to balanced membrane performance.