Phosphorus-containing sulfonated polyimides for proton exchange membranes


Cakir M., Karataş S. , Menceloglu Y., Kayaman Apohan N. , Guengoer A.

MACROMOLECULAR CHEMISTRY AND PHYSICS, vol.209, pp.919-929, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 209
  • Publication Date: 2008
  • Doi Number: 10.1002/macp.200700510
  • Title of Journal : MACROMOLECULAR CHEMISTRY AND PHYSICS
  • Page Numbers: pp.919-929

Abstract

Synthesis and characterization of the novel sulfonated BAPPO monomer and its use in the synthesis of a new phosphine oxide-based sulfonated polyimide are described. BTDA, 6FDA, and DDS were used as monomers in the polyimide synthesis. Sulfonated polyimide membranes were obtained by a solution thermal imidization method. The thermal behavior of the polymers was investigated by DSC and TGA. The morphological structure of the membranes was investigated by tapping-mode AFM. The proton conductivities of the sulfonated polyimide increased regularly as a function of sulfonated diamine content. The conductivities are good compared to typical proton exchange membranes.