The effect of pH on morphology and electrical properties of polyaniline

Authors

  • Vanesa Alzate Restrepo Universidad Nacional de Colombia Sede Medellín
  • Diego Andrés Vasco Calle Universidad Nacional de Colombia Sede Medellín
  • Javier González Ocampo Universidad Nacional de Colombia Sede Medellín

Keywords:

Conductive polymers, polyaniline, pH effect, morphology, electrical properties

Abstract


The effect of the solution pH on the morphology and conductivity of electropolymerized polyaniline was studied via scanning electron microscopy (SEM) and faradaic impedance. Although polyaniline grows in both acidic and basic media, it was found that films polymerized at pH higher than 2.0 suffer structural changes which affected polymer conductivity.

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References

D.M. Mohilner, R.N. Adams, W. J. Argersinger, Jr. “Investigations of the kinetics and mechanism of the anodic oxidation of aniline in aqueous sulfuric acid solution at a platinum electrode”, Journal of. American. Chemistry Society. Vol. 84. 1962. pp. 3618-3622.

J. Bacon, R.N. Adams. “Anodic oxidation of aromatic amines”. Journal of. American. Chemistry Society. Vol. 90. 1968. pp. 6596-6599.

A. F. Diaz, J. A. Logan. “Electroactive polyaniline films”. Journal of Electroanalytical Chemistry. Vol. 111. 1980. pp. 111-114.

E. W. Paul, A. J. Ricco, M. S. Wrighton. “Resistance of polyaniline films as a function of electrochemical potential and the fabrication of polyaniline –based microelectronic devices”. Journal of Physical Chemistry. Vol. 89. 1985. pp. 1441-1447.

N. Gospodinova, L. Terlemezyan. “Conductive polymers prepared by oxidative polymerization: polyaniline”. Progress in Polymer Science. Vol. 23. 1998. pp. -1443-1484.

E. T. Kang, K. G. Neoh, K. L. Tan. “Polyaniline: A polymer with many interesting intrinsic redox states”. Progress in Polymer Science. Vol. 23. 1998. pp. 277-324.

M. J. Croissant, T. Napporn, J. M. Léger, C. Lamy. “Electrocatalytic oxidation of hydrogen at platinum modified polyaniline electrodes”. Electrochimica Acta. Vol. 43. 1998. pp. 2447-2457

C. T. Hable, M. S. Wrighton. “Electrocatalytic oxidation of methanol and ethanol: A comparison of platinum-tin and platinum-ruthenium catalyst particles in a conducting polyaniline matrix”. Langmuir, Vol. 9. 1993. pp. 3284-3290

L. Niu, Q. Li, F. Wei, X. Chen, H. Wang, “Formation optimization of platinum modified polyaniline films for the electrocatalytic oxidation of methanol”. Synthetic Metals. Vol. 139. 2003. pp. 271-276.

M. Gholamian, A. Q. Contractor. “Oxidation of formic acid at platinum microparticles dispersed in polyaniline matrix”. Journal of Electroanalytical Chemistry. Vol. 289. 1990. pp. 69-83.

A. Q. Contractor, T. N. Sureshkumar, R. Narayanan, S. Sukeerthi, R. Lal, R. S. Srinivasa. “Conducting polymerbased biosensors”. Electrochimica Acta. Vol. 39. 1994. pp. 1321-1324.

M. A. Habib, S. P. Maheswari. “Electrochromism of polyaniline: An in situ FTIR study”. Jornal of Electrochemical Society. Vol. 136. 1989. pp. 1050-1053.

W. Chen, T. Wen, H. Teng. “Polyaniline deposits porous carbon electrode for supercapacitors”. Electrochimica Acta. Vol. 48. 2003. pp. 641-649.

J. L. Lu, N. J. Liu, X. H. Wang, J. Li, X. B. Ping, F. S. Wang. “Mechanism and life study of polyaniline anti-corrosion coating”. Synthetic Metals. Vol. 135. 2003. pp. 237-238.

M.TCortés, “Polímeros conductores: materiales multifuncionales”. Química en Uniandes. Vol. 1. 2004. pp. 80-93.

K. Kaneto, M. Kaneko, Y. Min, A. G. MacDiarmid. “Artificial muscle: electromechanical actuators using polyaniline films”. Synthetic Metals. Vol. 71. 1995. pp. 2211-2212.

W. W. Focke, G. E. Wnek, Y. Wei. “Influence of oxidation state, pH and counterion on the conductivity of polyaniline”. Journal of Physical Chemistry. Vol. 91. 1987. pp. 5813-5818.

H. N. Dinh, P. Vanýsek, V. I. Birss. “The effect of film thickness and growth method on polyaniline film properties”. Journal of Electrochemical Society. Vol. 146. 1999. pp. 3324-3334.

T. Kobayashi, H. Yoneyama, H. Tamura. “Oxidative degradation pathway of polyaniline film electrodes”, Journal of Electroanalytical Chemistry. Vol. 177. 1984. pp. 293-297.

L. Dui , Z. Mandi . “Counter-ion and pH effect on the electrochemical synthesis of polyaniline”. Journal of Electroanalytical Chemistry. Vol 335. 1992. pp. 207-221.

T. Ohsaka, Y. Ohnuki, N. Oyama, G. Katagiri, K. Kamisako. “IR absorption spectroscopic identification of electroactive and electroinactive polyaniline films prepared by the electrochemical polymerization of aniline” Journal of Electroanalytical Chemistry. Vol. 161. 1984. pp. 399-405.

T. Kobayashi, H. Yoneyama, H. Tamura. Electrochemical reactions concerned with electrochromism of polyaniline film coated electrodes, J. Electroanal. Chem., 177. 1984. pp. 281-291.

H. N. Dinh, J. Ding, S. J. Xia, V. I. Birss. “Multi-technique sudy of the anodic degradaton of polyaniline films”. Journal of Electroanalytical Chemistry. Vol. 459. 1998. pp. 45-56.

H. Okamoto, T. Kotaka. “Structure and properties of polyaniline films prepared via electrochemical polymerization. I: Effect of pH in electrochemical polymerization media on the primary structure and acid dissociation constant of product polyaniline films”. Polymer. Vol. 39. 1998. pp. 4349-4358.

G. de T. Andrade, M. J. Aguirre, S. R. Biaggio. “Influence of the first potential scan on the morphology and electrical properties of potentiodynamically grown polyaniline films”. Electrochimica Acta. Vol. 44. 1998. pp. 633-642.

Published

2006-07-29

How to Cite

Alzate Restrepo, V., Vasco Calle, D. A., & González Ocampo, J. (2006). The effect of pH on morphology and electrical properties of polyaniline. Revista Facultad De Ingeniería Universidad De Antioquia, (38), 88–96. Retrieved from https://revistas.udea.edu.co/index.php/ingenieria/article/view/343237