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 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 209
  • Publication Date: 2008
  • Doi Number: 10.1002/macp.200700510
  • Journal Name: MACROMOLECULAR CHEMISTRY AND PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.919-929
  • Keywords: conducting polymers, fuel cells, PEM, phosphine oxide, polyimides, COPOLYMERS, IONOMERS, ETHER), ACID
  • Marmara University Affiliated: Yes

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.