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Polyaniline Emeraldine Salt Molecules Coated On Polyethylene Board Using SILAR Technique

Gian Paul Joshua De Vera Arejola, Marvin U. Herrera

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In this study, conducting polyaniline (PANI) Emeraldine salt molecules were coated on polyethylene (PE) board using successive ionic layer adsorption and reaction (SILAR) technique. The number of dipping cycles were varied and the surface conductivity of the samples were measured using four-point probe technique. Fourier Transform Infrared (FTIR) spectroscopy was also done to verify the identities of the coated samples. Results show that PANI Emeraldine salt was successfully coated on PE board as indicated by the peaks of FTIR spectra. Surface conductivity of the PANI Emeraldine salt coated PE board increases with increased number of dipping cycles due to increases interconnectivity of PANI molecules. The conductivity decreases after reaching an optimum point at 80 dipping cycles due to either hindrance of movement of charges or the breaking away of chunks of PANI molecules. These results opens up several applications such as memory devices and erasable circuit boards.