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Title: Doping-dependent ion selectivity of polyaniline membranes
Authors: Wen, L.
Kocherginsky, N.M. 
Issue Date: 30-Sep-1999
Citation: Wen, L., Kocherginsky, N.M. (1999-09-30). Doping-dependent ion selectivity of polyaniline membranes. Synthetic Metals 106 (1) : 19-27. ScholarBank@NUS Repository.
Abstract: Polyaniline (PAN) films were cast from a solution in N-methyl-2-pyrrolidone (NMP) and characterized by atomic force microscopy (AFM), FTIR, X-ray, TGA and DSC. Ion selectivity of the films as free-standing membranes in the electrolyte/membrane/electrolyte system was characterized by transmembrane electric potential. It was demonstrated that PAN membrane has completely different permeability and ion selectivity in the undoped and HCl-doped states. In the undoped state, the membrane is hardly permeable to inorganic ions, but still it is selective to H+. After HCl-doping transmembrane resistance decreases by a few orders of value, and the membrane becomes anion/H+-selective.
Source Title: Synthetic Metals
ISSN: 03796779
DOI: 10.1016/S0379-6779(99)00098-3
Appears in Collections:Staff Publications

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