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Advances in Nano Research   Volume 2, Number 2, June 2014, pages 111-119
Synthesis of anisotropic defective polyaniline/silver nanocomposites
Vaishali Kamble, Gunjan Kodwani, Ramdoss Sridharkrishna and Balaprasad Ankamwar

Abstract     [Full Text]
    The chemical synthesis of anisotropic defective polyaniline/Ag composite (PANI/Ag) is explored using silver nitrate (AgNO3) as the precursor material. This study provides a simple method for the formation of PANI/Ag nanocomposites at two different aniline concentrations 5ul (PANC5) and 10ul (PANC10). The composite PANC5 exhibits UV-Visible absorption peaks at 436 nm and 670 nm whereas, PANC10 exhibits absorption peaks at 446 nm and 697 nm. This shift is caused by the strong interaction between polyaniline and silver. The characterized FTIR peaks observed at around 3410 cm-1 (PANC5) and 3420 cm−1 (PANC10) was due to the N-H stretching vibrations. The appearance of a broad band instead of a sharp peak can be attributed due to the presence of a high concentration of N–H groups in the nanocomposite. The TEM images show that the sample contains defective spherical, truncated triangular and rod shaped particles. The results showed that the PANI/Ag nanocomposites are composed of nano-sized particles of 43-53 nm that contain Ag domains of 33-37 nm with polymer thickness 5.7-11.2 nm at two different aniline concentrations.
Key Words
    silver nanoparticles; polyaniline; polyaniline-silver nanocomposites; trisodium citrate; polymer
Vaishali Kamble, Gunjan Kodwani, Ramdoss Sridharkrishna
and Balaprasad Ankamwar: Bio-Inspired Materials Science Laboratory, Department of Chemistry, University of Pune, Ganeshkhind, Pune-411007, India

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