Journal of Thermal Analysis

, Volume 39, Issue 2, pp 177–185 | Cite as

Thermal Analysis of Electroactive Polymers based on Aniline and its Derivatives

A comparative study
  • H. S. O. Chan
  • S. C. Ng
  • S. H. Seow
  • W. S. Sim
  • T. S. A. Hor


The thermal characteristics of polyaniline (PANI), poly(o-aminobenzoic acid) (POABAC) and poly(o-aminobenzyl alcohol) (POABOL) are determined and compared by thermogravimetry (TG) and differential scanning calorimetry (DSC). The higher thermal stability of POABOL is attributed to heat-induced condensation between the polymer chains. The DSC results suggest both intra- and inter-molecular interaction in the form of hydrogen bonding due to the substituent group in POABAC and POABOL. These interactions, however, occur mainly in the doped from and is greatly reduced when the dopant is expelled from the system at higher temperatures.


conducting polymers DSC heat-induced condensation reaction hydrogen-bonding intramolecular and inter-molecular interaction polyaniline poly(o-aminobenzoic acid) poly(o-aminobenzyl alcohol) TG 


Es wurden die thermischen Eigenschaften von Polyanilin (PANI), Poly(o-aminobenzoylsäure) (POABAC) und Poly(o-aminobenzylalkohol) (POABOL) ermittelt und mittels TG und DSC miteinander verglichen. Die höhere Thermostabilität von POABOL wird der wärmeinduzierten Kondensationsreaktion zwischen den Polymerketten zugeschrieben. Die DSC-Resultate weisen auf sowohl intra- als auch intermolekulare Wechselwirkungen in Form von Wasserstoffbrückenbindungen infolge der Substituenten in POABAC und POABOL hin. Diese Wechselwirkungen treten hauptsächlich in der dotierten Form auf und werden in großem Maße reduziert, wenn die Dotierungsmittel bei höheren Temperaturen ausgetrieben werden.


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  1. 1.
    G. Wegner, Angew. Chem. Int. Ed. Engl., 20 (1981) 361.CrossRefGoogle Scholar
  2. 2.
    A. G. MacDiarmid and M. Maxfield, Electrochemical Science and Technology of Polymers, R. G. Linford, Ed., Elsevier, London 1987, pp. 67–101.CrossRefGoogle Scholar
  3. 3.
    M. G. Kanatzidis, C&EN, December 3 (1990) 36.Google Scholar
  4. 4.
    T. A. Skothiem, ed., Handbook of Conductive Polymers, Marcel Dekker, New York, Vol. 1 and 2, 1986.Google Scholar
  5. 5.
    H. Shirakawa, E. J. Louis, A. G. MacDiarmid, C. K. Chiang and A. J. Heeger, J. Chem. Soc. Chem. Comm., (1977) 578; C. K. Chiang, C. R. Fincher, Jr., Y. W. Park, A. J. Heeger, H. Shirakawa, E. J. Louis, S. C. Gau and A. G. MacDiarmid, Phys. Rev. Lett., 39 (1977) 1098.Google Scholar
  6. 6.
    T. C. Chung, J. H. Kaufman, A. J. Heeger and F. Wudl, Phys. Rev. B, 30 (1984) 702; K. Kaneto, K. Yoshino and Y. Inuishi, Japanese J. Appl. Phys., 22 (1983) L 567, L 412.CrossRefGoogle Scholar
  7. 7.
    A. F. Diaz, K. K. Kanazawa and G. P. Gardini, J. Chem. Soc. Chem. Comm., (1979) 535; A. F. Diaz and K. K. Kanazawa, in Extended Linear Chain Compounds, ed. J. S. Miller, Plenum Press, New York, 1982, pp. 417–27.Google Scholar
  8. 8.
    A. G. MacDiarmid and A. Epstein, J. Chem. Soc. Faraday Trans., 5 (1989) 1.Google Scholar
  9. 9.
    J. C. Chiang and A. G. MacDiarmid, Synth. Met., 13 (1986) 193.CrossRefGoogle Scholar
  10. 10.
    W. S. Wu, D. Humphery and A. G. MacDiarmid, J. Chem. Soc., Faraday Trans, 82 (1986) 2385.CrossRefGoogle Scholar
  11. 11.
    M. Abe, A. Ohtani, Y. Umemoto, S. Akizuki, M. Ezoe, H. Nakamoto, A. Okuno and Y. Noda, J. Chem. Soc. Chem. Comm., 1736 (1989).Google Scholar
  12. 12.
    M. Inoue, R. E. Navarro and M. B. Inoue, Synth. Met., 30 (1989) 199.CrossRefGoogle Scholar
  13. 13.
    D. Macinnes, Jr. and B. L. Funt, Synth. Met., 25 (1988) 235.CrossRefGoogle Scholar
  14. 14.
    J. Yue and A. Epstein, J. Am. Chem. Soc., 112 (1990) 2800.CrossRefGoogle Scholar
  15. 15.
    T. Hagiwara, M. Yamaura and K. Iwata, Synth. Met., 25 (1988) 243.CrossRefGoogle Scholar
  16. 16.
    H. S. O. Chan, M. Y. B. Teo, E. Khor and C. N. Lim, J. Thermal Anal., 35 (1989) 765.CrossRefGoogle Scholar
  17. 17.
    H. S. O. Chan, S. C. Ng and W. S. Sim, Thermochim. Acta, in press.Google Scholar
  18. 18.
    Y. Wei and K. Hsueh, J. Polym. Sci., Pt A, 27 (1989) 4351.Google Scholar
  19. 19.
    V. G. Kulkarni, L. D. Campell and K. Iwata, Synth. Met., 30 (1989) 321.CrossRefGoogle Scholar
  20. 20.
    V. G. Kulkarni, Thermochim. Acta, 188 (1991) 265.CrossRefGoogle Scholar
  21. 21.
    Y. Wei, G. W. Jang and K. F. Hsueh, Polym. Matr. Sci. and Engr., 61 (1989) 916.Google Scholar

Copyright information

© Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest 1993

Authors and Affiliations

  • H. S. O. Chan
    • 1
  • S. C. Ng
    • 1
  • S. H. Seow
    • 1
  • W. S. Sim
    • 1
  • T. S. A. Hor
    • 1
  1. 1.Department of ChemistryNational University of SingaporeKent RidgeSingapore

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