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
Article

Abstract

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.

Keywords

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

Zusammenfassung

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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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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