Optical, electrical, and electrochemical properties of graphene based water soluble polyaniline composites

ABSTRACT Polyaniline (PANI) is one of the most common polymers known for its conducting properties. However, poor water solubility limits its applications. In this work, PANI has been functionalized with sulfonic acid groups to produce sulfonated PANI (SPANI) offering excellent solubility in water....

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Bibliographic Details
Published in:Journal of applied polymer science 2015-12, Vol.132 (45), p.np-n/a
Main Authors: Meriga, Venkanna, Valligatla, Sreeramulu, Sundaresan, Sivaprakash, Cahill, Caroline, Dhanak, Vinod R., Chakraborty, Amit K.
Format: Article
Language:English
Subjects:
carbon nanotube
composites
cyclic voltammetry
Electrical resistivity
Electrochemical analysis
electrochemical properties
Graphene
Materials science
Optical properties
Polyaniline (PANI) and SPANI
Polyanilines
Polymers
reduced graphene oxide
Resistivity
Solubility
sulfonic acid
X-rays
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Summary:ABSTRACT Polyaniline (PANI) is one of the most common polymers known for its conducting properties. However, poor water solubility limits its applications. In this work, PANI has been functionalized with sulfonic acid groups to produce sulfonated PANI (SPANI) offering excellent solubility in water. To compensate for the decrease of electrical conductivity due to functionalization, SPANI was combined with reduced graphene oxide (RGO) to form SPANI/RGO composites with interesting optical, thermal, and electrical properties. The composites have been characterized using X‐ray diffraction (XRD), field emission scanning electron microscopy, UV–vis absorption spectroscopy, Raman spectroscopy, Fourier‐transform infrared spectroscopy, X‐ray photoelectron spectroscopy, thermogravimetric analysis, cyclic voltammetry, and four probe electrical conductivity measurement. The SPANI/RGO composites show increased thermal stability, reduced optical band gap and improved electrochemical properties compared with the pure polymer. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42766.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.42766