Phosphorus-containing sulfonated polyimides for proton exchange membranes
Çakır, Mustafa and Karataş, Sevim and Menceloğlu, Yusuf Z. and Kayaman-Apohan, Nilhan and Güngör, Atilla (2008) Phosphorus-containing sulfonated polyimides for proton exchange membranes. Macromolecular Chemistry and Physics, 209 (9). pp. 919-929. ISSN 1022-1352
Official URL: http://dx.doi.org/10.1002/macp.200700510
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.
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