Thermal doping of polyaniline by sulfonic acids

The thermal doping of the emeraldine base (EB) form of polyaniline using two different sulfonic acids, dodecylbenzene sulfonic acid (DBSA) and p‐toluenesulfonic acid (pTSA) has been studied. Differential scanning calorimetry was used to record thermal events associated with the doping process. EB un...

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Bibliographic Details
Published in:Polymer international 2003-03, Vol.52 (3), p.433-438
Main Authors: Poussin, Denis, Morgan, Huda, Foot, Peter J S
Format: Article
Language:English
Subjects:
Applied sciences
conducting polyaniline
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
sulfonic acids
thermal doping
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Summary:The thermal doping of the emeraldine base (EB) form of polyaniline using two different sulfonic acids, dodecylbenzene sulfonic acid (DBSA) and p‐toluenesulfonic acid (pTSA) has been studied. Differential scanning calorimetry was used to record thermal events associated with the doping process. EB undergoes thermally induced doping with both acids at temperatures depending on the initial quantity of the dopant present. The doping temperatures show an increasing trend with increasing proportion of acid. The enthalpy of doping is also composition dependent. Conductivity values determined by the four‐probe method are given for each sample. The highest conductivities were attained at a mole ratio of 1 (dopant:EB) for both EB(DBSA) and EB(pTSA). © 2003 Society of Chemical Industry
ISSN:0959-8103
1097-0126
DOI:10.1002/pi.1107