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It was observed that the oxidative polymerization of aniline proceeded well not only in the liquid mixtures at 20°C or −5°C but also in ice at −24°C. The oxidative polymerization took place in the solutions of strong acid (0.1M sulfuric acid) or weak acid (0.4M acetic acid). It is proposed that the initially generated polyaniline participates in the further redox process, leading to new polyaniline...
Diphenylamine-4-sulfonic acid and aniline were copolymerized by cyclic scanning of the potential in 1M HCl solutions on platinum substrates. The inversion potential was shifted from values where diphenylamine-4-sulfonic acid is the only monomer oxidized to higher values where the oxidation of aniline is significant. FTIR-ATR spectroscopy and XPS results revealed the role played by the inversion potential...
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