Covalent cross-linked anion exchange membrane based on poly(biphenyl piperidine) and poly(styrene-b-(ethylene-co-butylene)-b-styrene): preparation and properties. Issue 11 (24th July 2021)

• Record Type: Journal Article
• Authors: Wang, Liujiao; You, Rixin; Ling, Yuxuan; Xie, Yu; Mei, Cenyu; Li, Ziming; Wang, Fanghui
• Is Part Of: Polymer-plastics technology and materials. Volume 60:Issue 11(2021)
• Page Start: 1233
• Page End: 1246
• Publication Date: 2021-07-24
• Subjects: Anion exchange membrane -- polybiphenyl piperidine -- polystyrene‑b‑poly(ethylene-co-butylene)‑b‑polystyrene -- cross-linking -- alkali resistance; Polymers -- Periodicals; Polymerization -- Periodicals; Plastics -- Periodicals; Plastics; Polymerization; Polymers; Periodicals; 668
• DOI: Https://www.tandfonline.com/doi/10.1080/25740881.2021.1888987
• Languages: English
• ISSNs: 2574-0881

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: uf0001