Meriga, Venkanna and Valligatla, Sreeramulu and Sundaresan, Sivaprakash and Cahill, Caroline and Dhanak, Vinod R. and Chakraborty, Amit K. (2015) Optical, electrical, and electrochemical properties of graphene based water soluble polyaniline composites. Journal of Applied Polymer Science, 132 (45). 42766(1-9).

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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.

Item Type: Article
Depositing User: Dr. Sarita Ghosh
Date Deposited: 14 Sep 2016 12:37
Last Modified: 14 Sep 2016 12:37

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