Abstract

The aim of this study was to study, by electrochemical impedance spectroscopy, the electrochemical properties of a new conductive polymer composite made from cassava starch and poly (3, 4-ethylenedioxythiophene) (PEDOT). The results show that the polymer composite shows excellent conductivity with resistance values in the order of kΩ and capacitance values in the order of mF as a result of possible interactions of polymer chains of cassava starch and PEDOT. The results allow to establish a high potentiality of the starch/PEDOT polymer composite for applications as batteries, charge accumulators or electrochemical actuators.

Keywords:

Cassava, electroactivity, electrochemical impedance spectroscopy, PEDOT, starch,

References

1. Arrieta, A.A. and M.S. Palencia, 2016. Estudio electroquímico de un biopolímero compuesto ppy/almidón de cassava. Rev. LatinoAm. Metal. Mat., 36(1): 26-35.
   
2. Arrieta, A.A., P.F. Ga-án, S.E. Márquez and R. Zuluaga, 2011. Electrically conductive bioplastics from cassava starch. J. Braz. Chem. Soc., 22(6): 1170-1176.
   CrossRef    
3. Awuzie, C.I., 2017. Conducting polymers. Mater. Today Proc., 4(4): 5721-5726.
   CrossRef    
4. Bhagwat, N., R.E. Murray, S.I. Shah, K.L. Kiick and D.C. Martin, 2016. Biofunctionalization of PEDOT films with laminin-derived peptides. Acta Biomater., 41(1): 235-246.
   CrossRef    PMid:27181880    
5. Cardoso, M.B., J.L. Putaux, D. Samios and N.P. da Silveira, 2007. Influence of alkali concentration on the deproteinization and/or gelatinization of rice starch. Carbohyd. Polym., 70(2): 160-165.
   CrossRef    
6. Jeon, S.S., S.I. Han, Y.H. Jin and S.S. Im, 2005. Polycarbonate-based conductive film prepared by coating DBSA-doped PEDOT/sorbitol. Syn. Metal., 148(3): 287-291.
   CrossRef    
7. Kiya, Y., A. Iwata, T. Sarukawa, J.C. Henderson and H.D. Abru-a, 2007. Poly[dithio-2,5-(1,3,4-thiadiazole)] (PDMcT)–poly(3,4-ethylenedioxythiophene) (PEDOT) composite cathode for high-energy lithium/lithium-ion rechargeable batteries. J. Power Sources, 173(1): 522-530.
   CrossRef    
8. Lenz, A., H. Kariis, A. Pohl, P. Persson and L. Ojamäe, 2011. The electronic structure and reflectivity of PEDOT: PSS from density functional theory. Chem. Phys., 384(1-3): 44-51.
   CrossRef    
9. Rodríguez-Calero, G.G., S. Conte, M.A. Lowe, J. Gao Y. Kiya, J.C. Henderson and H.D. Abru-a, 2015. Synthesis and characterization of Poly-3,4-ethylenedioxythiophene/2,5-dimercapto-1,3,4-thiadiazole (PEDOT-DMcT) hybrids. Electrochim. Acta, 167(10): 55-60.
   CrossRef    
10. Skotheim, T.A. and J. Reynolds, 2007. Handbook of Conducting Polymers. 2 Volume Set., CRC Press, New York.
    PMCid:PMC1770935    
11. Thanh Tung, T., T. Young Kim and K.S. Suh, 2011. Nanocomposites of single-walled carbon nanotubes and poly(3,4-ethylenedioxythiophene) for transparent and conductive film. Org. Electron., 12(1): 22-28.
    CrossRef    
12. Verheyen, L., P. Leysen, M.P. Van Den Eede, W. Ceunen, T. Hardeman and G. Koeckelberghs, 2017. Advances in the controlled polymerization of conjugated polymers. Polymer, 108(13): 521-546.
    CrossRef    
13. Zhou, H., G. Liu, J. Liu, Y. Wang, Q. Ai et al., 2017. Effective network formation of PEDOT by in-situ polymerization using novel organic template and nanocomposite supercapacitor. Electrochim. Acta, 247(1): 871-879.
    CrossRef    

Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.