Solution casting, characterization, and performance evaluation of perfluorosulfonic sodium type membranes for chlor-alkali application
作者： Fereidoon Mohammadi , Ahmad Rabiee
DOI: 10.1002/APP.33526
关键词:
摘要: This investigation describes solution casting, characterization and performance evaluation of perfluorosulfonic sodium (PFSS) type membranes prepared by three different methods from Nafion Nafion-117 for Chlor-Alkali (CA) application. A experimental set-up was designed constructed the recast membranes. The chemical structure cast films studied confirmed FTIR (Fourier Transform infrared spectroscopy) ATR (Attenuated total reflection) techniques. physical properties including mechanical strength, thermal behavior, water sorption, ion-exchange capacity (IEC), morphology, crystallinity were also evaluated. All polymeric behave like elastomers with low modulus but high elongation at break. Differential scanning calorimetric (DSC) thermograms showed two endothermic peaks 180°C 250°C attributed to matrix glass transition (Tgm) ionic cluster (Tgc) polymer, respectively. uptake reasonable in comparison Nafion-117. Solution casting has no significant effect on ion exchange films. electron microscope (SEM) micrograph that morphology is reasonably similar However, as-cast have some micro pores, which are produced during casting. annealed film, because heat treatment slightly due local ordering. According results, obtained CA cell, recycled commercial such as can be used process. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci,
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