Comparison between different conditions of the chemical polymerization of polyaniline on top of PET films

✍ Scribed by Aldo E. Job; Paulo S. P. Herrmann Jr.; Denise O. Vaz; Luiz H. C. Mattoso

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 420 KB
• Volume: 79
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/1097-4628(20010214)79:7<1220::aid-app90>3.0.co;2-3

✦ Synopsis

Composites produced during the in situ chemical polymerization of aniline on top of a poly(ethylene terephthalate) (PET) film, in different conditions, were studied by open-circuit potential (Voc), ultraviolet-visible, and infrared spectroscopy, electrical conductivity measurements, scanning electron microscopy, and atomic force microscopy. The polymerization monitoring by Voc showed a maximum associated with the intermediate pernigraniline oxidation state and a final formation of polyaniline (PANI) in the doped emeraldine salt (ES) form. Furthermore, high electrical conductivity values were obtained for the PANI-ES coating prepared under selected conditions. A globular formation was observed for the doped PANI-ES coating with globules of sizes of the same order and same shape of the PET, demonstrating the influence of the substrate on the coating morphology.