• Crosslinked poly(ether ether ketone): cost-effective proton exchange membranes for fuel cell application

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      https://www.ias.ac.in/article/fulltext/boms/041/01/0009

    • Keywords

       

      Random copolymers; sulphonation; crosslinking; morphology; thermal stability.

    • Abstract

       

      Sulphonated poly(ether ether ketone) copolymers bearing pendant carboxylic acid (SPEEK-C) have beensynthesized via nucleophilic condensation reaction of 4,4$^{\prime}$-difluorobenzophenone, sulphonated 4,4$^{\prime}$-difluorobenzophenoneand 3,5-dihydroxy benzoic acid. The structure of the sulphonated copolymer was identified from FT-IR and ${}^1$H-NMRspectrum. The pendant carboxylic groups of SPEEK-C were further crosslinked with poly(vinyl alcohol) (PVA) to fabricatethe crosslinked (SPEEK/PVA) membranes. The performance of the membranes was evaluated in terms of water uptake,proton conductivity and oxidative stability. The thermal stabilities of the membranes were determined by thermogravimetricanalysis and differential scanning calorimetry techniques, whereas the morphological analysis was performed by atomicforce microscopy.

    • Author Affiliations

       

      SWATI AWASTHI1 VAISHNAV KIRAN1 BHARTI GAUR1

      1. Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur 177005, India
    • Dates

       
  • Bulletin of Materials Science | News

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