Comparison between different conditions of the chemical polymerization of polyaniline on top of PET films
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Abstract
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.
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Atomic force microscopy, Conductive films, Electric conductivity of solids, Electric potential, Infrared spectroscopy, Morphology, Oxidation, Plastic films, Polyethylene terephthalates, Polymerization, Scanning electron microscopy, Polyaniline, Composite materials
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English
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Journal of Applied Polymer Science, v. 79, n. 7, p. 1220-1229, 2001.
