Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0379-6779(99)00098-3
Title: Doping-dependent ion selectivity of polyaniline membranes
Authors: Wen, L.
Kocherginsky, N.M. 
Issue Date: 30-Sep-1999
Source: Wen, L., Kocherginsky, N.M. (1999-09-30). Doping-dependent ion selectivity of polyaniline membranes. Synthetic Metals 106 (1) : 19-27. ScholarBank@NUS Repository. https://doi.org/10.1016/S0379-6779(99)00098-3
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
URI: http://scholarbank.nus.edu.sg/handle/10635/91932
ISSN: 03796779
DOI: 10.1016/S0379-6779(99)00098-3
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