Synthesis and characterization of nanocomposites based on PANI and carbon nanostructures prepared by electropolymerization
Journal
Materials Chemistry and Physics
Date Issued
2017-01
Author(s)
Aleksandar Petrovski, Perica Paunovic, Roberto Avolio, Maria E. Errico, Mariacristina Cocca, Gennaro Gentile, Anita Grozdanov, Maurizio Avella, John Barton, Aleksandar Dimitrov
DOI
https://doi.org/10.1016/j.matchemphys.2016.10.008
Abstract
Nanocomposites based on polyaniline (PANI) and carbon nanostructures (CNSs) (graphene (G) and
multiwall carbon nanotubes (MWCNTs)) were prepared by in situ electrochemical polymerization. CNSs were inserted into the PANI matrix by dispersing them into the electrolyte before the electropolymerization. Electrochemical characterization by means of cyclic voltammetry and steady state polarization were performed in order to determine conditions for electro-polymerization. Electropolymerization of the PANI based nanocomposites was carried out at 0.75 V vs. saturated calomel electrode (SCE) for 40 and 60 min. The morphology and structural characteristics of the obtained nanocomposites were studied by scanning electron microscopy (SEM) and Raman spectroscopy, while thermal stability was determined using thermal gravimetric analysis (TGA). According to the morphological and structural study, fibrous and porous structure of PANI based nanocomposites was detected well embedding both G and MWCNTs. Also, strong interaction between quinoidal structure of PANI with carbon nanostructures via pep stacking was detected by Raman spectroscopy. TGA showed the increased thermal stability of composites reinforced with CNSs, especially those reinforced with graphene.
multiwall carbon nanotubes (MWCNTs)) were prepared by in situ electrochemical polymerization. CNSs were inserted into the PANI matrix by dispersing them into the electrolyte before the electropolymerization. Electrochemical characterization by means of cyclic voltammetry and steady state polarization were performed in order to determine conditions for electro-polymerization. Electropolymerization of the PANI based nanocomposites was carried out at 0.75 V vs. saturated calomel electrode (SCE) for 40 and 60 min. The morphology and structural characteristics of the obtained nanocomposites were studied by scanning electron microscopy (SEM) and Raman spectroscopy, while thermal stability was determined using thermal gravimetric analysis (TGA). According to the morphological and structural study, fibrous and porous structure of PANI based nanocomposites was detected well embedding both G and MWCNTs. Also, strong interaction between quinoidal structure of PANI with carbon nanostructures via pep stacking was detected by Raman spectroscopy. TGA showed the increased thermal stability of composites reinforced with CNSs, especially those reinforced with graphene.
File(s)![Thumbnail Image]()
Loading...
Name
2017 MCP.pdf
Size
5.07 MB
Format
Adobe PDF
Checksum
(MD5):68a3fa14cf929c9626716ba4324212f4