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Novel sulfonated polyimide-nafion nanocomposite membranes: Fabrication, morphology and physiochemical investigations for fuel cell applications by Ali, Nisar (author);Ali, Farman (author);Khan, Saboor (author);Sheikh, Zeshan Ali (author);Said, Amir (author);Nawaz, Zahid (author);Ihsanullah, Ihsanullah (author);Bilal, Muhammad (author) is a Chemistry article available to read on EtoBox.

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Herein, Nafion/sulfonated polyimide (SPI-x) composite membranes have been fabricated using different ratios of Nafion and SPI. The SPI was synthesized using 1, 4, 5, 8-Napthalenetetracarboxylic dianhydride (NTDA) via a one-step high-temperature imidization method in an inert atmosphere. The incorporation of SPI membrane with ion exchange capacity (IEC) of about 1.0 mmol -1 in Nafion showed improvement in physicochemical properties, such as IECs, hydrolytic/oxidative stability, water uptake, and dimensional changes (3.61). Nafion/SPI-x composite membranes showed good proton exchange nature i.e. proton conductivity and thermal stability. Scanning electron micrographs (SEM) reveals that the Nafion/SPI-x nanocomposites membranes display well defined micro-phase separation morphology based on SPI content in the composites. Fourier-transform infrared spectroscopy (FT-IR) confirmed the presence of important functional groups in synthesized membranes. The protons present in membranes were studied by nuclear magnetic resonance ( 1 H NMR) spectroscopy, carbon-13 nuclear magnetic resonance ( 13 C NMR) spectroscopy, and X-ray diffraction analysis (XRD) investigated the nature of polymer materi

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Author

Ali, Nisar (author);Ali, Farman (author);Khan, Saboor (author);Sheikh, Zeshan Ali (author);Said, Amir (author);Nawaz, Zahid (author);Ihsanullah, Ihsanullah (author);Bilal, Muhammad (author)

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Chemistry (Physical Sciences)