Synthesis of organic/inorganic hybrid composite membranes and their structural and conductivity properties

Uma Thanganathan, Suresh Kumar, Akira Kishimoto, Kunio Kimura

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The present article describes the use of a less expensive non-perfluorinated polymer (polyvinyl alcohol, PVA), heteropolyacid (HPA), glutaraldehyde and 3-aminopropyltriethoxysilane (APTES) for the formation of high proton-conducting hybrid composite membranes. The conductivity of the PVA/PMA/Gl/APTES hybrid composite membranes was measured under varying conditions of temperature (from - 20 °C to 140 °C) and relative humidity (from 30 to 90%). Conductivity values in the range of 10 - 3-10 - 1 S cm - 1 were obtained for the hybrid membranes. These free-standing flexible films were mechanically stable and the corresponding composite membranes were thermally stable up to 300 °C. Their swelling ratio was calculated for dry and wet conditions at room temperature.

Original languageEnglish
Pages (from-to)81-87
Number of pages7
JournalMaterials Letters
Volume72
DOIs
Publication statusPublished - Apr 1 2012

Keywords

  • Conductivity
  • Hybrid composite
  • Phosphomolybdic acid
  • Polyvinyl alcohol
  • Sol-gel

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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