Polyaniline/Montmorillonite Nanocomposites Obtained by In Situ Intercalation and Oxidative Polymerization in Cationic Modified-Clay (Sodium, Copper and Iron)

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Title: Polyaniline/Montmorillonite Nanocomposites Obtained by In Situ Intercalation and Oxidative Polymerization in Cationic Modified-Clay (Sodium, Copper and Iron)
Authors: Zehhaf, Abdelhafid | Morallon, Emilia | Benyoucef, Abdelghani
Research Group/s: Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Oxidative polymerization | Polyaniline | Nanocomposite | Conducting polymer | Montmorillonite | Cation-exchanged
Knowledge Area: Química Física
Issue Date: Nov-2013
Publisher: Springer Science+Business Media New York
Citation: Journal of Inorganic and Organometallic Polymers and Materials. 2013, 23(6): 1485-1491. doi:10.1007/s10904-013-9953-3
Abstract: Polyaniline/montmorillonite nanocomposites (PANI/M) were obtained by intercalation of aniline monomer into M modified with different cations and subsequent oxidative polymerization of the aniline. The modified-clay was prepared by ion exchange of sodium, copper and iron cations in the clay (Na–M, Cu–M and Fe–M respectively). Infrared spectroscopy confirms the electrostatic interaction between the oxidized PANI and the negatively charged surface of the clay. X-ray diffraction analysis provides structural information of the prepared materials. The nanocomposites were characterized by transmission electron microscopy and their thermal degradation was investigated by thermogravimetric analysis. The weight loss suggests that the PANI chains in the nanocomposites have higher thermal stability than pure PANI. The electrical conductivity of the nanocomposites increased between 12 and 24 times with respect to the pure M and this increase was dependent on the cation-modification. The electrochemical behavior of the polymers extracted from the nanocomposites was studied by cyclic voltammetry and a good electrochemical response was observed.
Sponsor: This work was supported by the National Agency for the Development of University Research (ANDRU), the Directorate General of Scientific Research and Technological Development (DGRSDT) of Algeria. Ministerio de Economia y Competitividad and FEDER are also acknowledged (MAT2010-15273). The Generalitat Valenciana is also acknowledged (PROMETEO2013/038).
URI: http://hdl.handle.net/10045/38697
ISSN: 1574-1443 (Print) | 1574-1451 (Online)
DOI: 10.1007/s10904-013-9953-3
Language: eng
Type: info:eu-repo/semantics/article
Rights: The final publication is available at Springer via http://dx.doi.org/10.1007/s10904-013-9953-3
Peer Review: si
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