Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Characterization of Electro-Polymerized Polyaniline Film on the Cold Rolled Sheet in the Oxalic acid and Sodium Molybdate Electrolyte

옥살산과 몰리브덴산나트륨 전해액에서 냉연강판에 전해중합된 폴리아닐린 피막의 특성

  • Lim, Ki-Young (LS Cable) ;
  • Yoon, Jeong-Mo (Department of Metallurgical Engineering, Chonbuk National University) ;
  • Ki, Joon-Seo (Department of Metallurgical Engineering, Chonbuk National University) ;
  • Jang, Yong-Seok (Department of Metallurgical Engineering, Chonbuk National University)
  • Published : 2006.06.27
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Abstract

Increasing environmental concerns require to solve the problem produced due to the use of heavy metals in coating formulations. Therefore, it is necessary to develop new coating strategy employing inherently conducting polymers such as polyaniline. Polyaniline is a conductive polymer that is synthesized by oxidation polymerization, and the electrochemical and chemical polymerization are possible for the oxidation of aniline. Electrochemical oxidation polymerization produces a fine surface and although voltage control is more convenient, it require electrolytic cells, and elaborate thin film can be acquired with the polymerization. Polyaniline films were electro-polymerized on cold rolled sheets using the galvanostat mode in the oxalic acidaniline-sodium molybdate electrolyte. The structure and properties of polyaniline film were studied using Potentiostat/Galvanostat 263A, FE-SEM,, AFM, SST, Colorimetry. A high corrosion resistance of polyaniline film was observed with an increase of corrosion potential by $500{\sim}600$ mV for the substrate covered with polyaniline.

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References

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