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ABSTRACT Poly(biphenyl piperidine) and polystyrene‑b‑poly(ethylene-co-butylene)‑b‑polystyrene were cross-linked to form a polymer backbone, piperidine as the ionic conducting group to improve the chemical stability of the anion exchange membrane. Results indicate… Click to show full abstract
ABSTRACT Poly(biphenyl piperidine) and polystyrene‑b‑poly(ethylene-co-butylene)‑b‑polystyrene were cross-linked to form a polymer backbone, piperidine as the ionic conducting group to improve the chemical stability of the anion exchange membrane. Results indicate that the cross-linked membranes could still retain more than 95% of ion conductivity after being soaked in 1-M KOH solution at 80°C for 800 h, indicating that this cross-linked membrane exhibits good alkaline stability. The optimized microphase separation morphology could promote the ion transport (81.68 mS/cm, 80°C). The cross-linked structure helped to restrain the swelling behavior. The membrane became flexible after cross-linking, which is beneficial to the fuel-cell assembly. Graphical Abstract
Journal Title: Polymer-Plastics Technology and Materials
Year Published: 2021
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