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<p>The current study is concerned with the proton conductivity appropriateness of a hybrid network membrane made up of primarily polyvinyl alcohol crosslinked with maleimide containing triphenylimidazole (MTPI) and siloxane, (PVA/MTPI/Siloxane). The SnO<sub>2</sub> nanoparticles was then dispersed into PVA/MTPI/Siloxane hybrid polymer networks so as to obtain a composite membrane with enhanced performance towards polymer electrolyte fuel cell applications. The membrane of PVA/MTPI-15%/Siloxane/SnO<sub>2</sub> (1%) has cation exchange capacity (IEC) of 0.75&#xa0;meq/g and the membranes PVA/MTPI/Siloxane/SnO<sub>2</sub> (2%) and (3%), showed increased IECs of 0.97 and 1.09&#xa0;meq/g, respectively. The ability of the PVA/MTPI/Siloxane membranes to absorb water was, however, improved by the addition of SnO<sub>2</sub> nanoparticles. The swelling ratio was dramatically reduced by the inclusion of SnO<sub>2</sub> nanoparticles. The PVA/MTPI/Siloxane sheets exhibited greater proton conductivity than unmodified polyvinyl alcohol-based membranes. Notably, the SnO<sub>2</sub> nanoparticles (3%) dispersed PVA membrane (32.1%) have boosted the membrane’s stability. It has been shown that PVA/MTPI/Siloxanecomposite films containing SnO<sub>2</sub> nanoparticles have greater proton conductivities than PVA/MTPI/Siloxane. At 110&#xa0;°C, a membrane loaded with 3% SnO<sub>2</sub> had greater proton conductivity than membranes based on PVA, measured 7.7 × 10<sup>–2</sup> S/cm.</p>

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Synthesis, Characterization and Proton Exchange Properties of SnO2 Nanoparticle Dispersed Triphenylimidazole/Siloxane/Polyvinyl Alcohol Intercrosslinked Membranes

  • 期刊论文

  • 发表日期：

    2025年4月16日

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  • G. Durgadevi,
  • T. Senthil,
  • A. Chandramohan,
  • D. Paradesi,
  • K. Dinakaran

摘要

The current study is concerned with the proton conductivity appropriateness of a hybrid network membrane made up of primarily polyvinyl alcohol crosslinked with maleimide containing triphenylimidazole (MTPI) and siloxane, (PVA/MTPI/Siloxane). The SnO2 nanoparticles was then dispersed into PVA/MTPI/Siloxane hybrid polymer networks so as to obtain a composite membrane with enhanced performance towards polymer electrolyte fuel cell applications. The membrane of PVA/MTPI-15%/Siloxane/SnO2 (1%) has cation exchange capacity (IEC) of 0.75 meq/g and the membranes PVA/MTPI/Siloxane/SnO2 (2%) and (3%), showed increased IECs of 0.97 and 1.09 meq/g, respectively. The ability of the PVA/MTPI/Siloxane membranes to absorb water was, however, improved by the addition of SnO2 nanoparticles. The swelling ratio was dramatically reduced by the inclusion of SnO2 nanoparticles. The PVA/MTPI/Siloxane sheets exhibited greater proton conductivity than unmodified polyvinyl alcohol-based membranes. Notably, the SnO2 nanoparticles (3%) dispersed PVA membrane (32.1%) have boosted the membrane’s stability. It has been shown that PVA/MTPI/Siloxanecomposite films containing SnO2 nanoparticles have greater proton conductivities than PVA/MTPI/Siloxane. At 110 °C, a membrane loaded with 3% SnO2 had greater proton conductivity than membranes based on PVA, measured 7.7 × 10–2 S/cm.