Abstract
Anilinium 5-sulfosalicylate was prepared and characterized by elemental analysis, and FTIR and NMR spectroscopies. It was polymerized in an aqueous solution using ammonium peroxydisulfate as an oxidant. The precipitated polyaniline 5-sulfosalicylate exhibited high thermal stability and conductivity of 0.13 S cm−1. Its mass-average molar mass and polydispersity index were determined by gel-permeation chromatography as 22,900 g mol−1 and 2.7, respectively. Elemental analysis and FTIR spectroscopy study of polyaniline 5-sulfosalicylate revealed the doping level and the oxidation state between emeraldine and protoemeraldine salt while corresponding studies of the polyaniline base indicate a small extent of the covalent bonding of 5-sulfosalicylate anions to polyaniline chains.
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Marjanović, B., Juranić, I., Mentus, S. et al. Oxidative polymerization of anilinium 5-sulfosalicylate with peroxydisulfate in water. Chem. Pap. 64, 783–790 (2010). https://doi.org/10.2478/s11696-010-0064-0
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DOI: https://doi.org/10.2478/s11696-010-0064-0