A study on the synthesis, characterization and properties of polyaniline/magnesium boride nanocomposites

Authors

  • Shumaila,

    1. Department of Physics, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, India
    2. Department of Applied Sciences and Humanities, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, India
    Search for more papers by this author
  • Masood Alam,

    1. Department of Applied Sciences and Humanities, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, India
    Search for more papers by this author
  • Azher M Siddiqui,

    1. Department of Physics, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, India
    Search for more papers by this author
  • Mushahid Husain

    Corresponding author
    1. Department of Physics, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, India
    2. Centre for Nanoscience & Nanotechnology, Jamia Millia Islamia, New Delhi, India
    • Correspondence to: Mushahid Husain, Department of Physics, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi-110025, India. E-mail: mush_reslab@rediffmail.com

    Search for more papers by this author

Abstract

The present paper reports the novel synthesis of polyaniline/magnesium boride (PAni/MgB2) nanocomposites. Nanowires 50–100 nm in diameter grown by the sol–gel technique were incorporated in the PAni to prepare PAni/MgB2 nanocomposites, which yielded an enhancement of conductivity by 5 orders of magnitude. PAni was synthesized through the chemical oxidative polymerization method. The composition of the prepared nanocomposites was tunable, i.e. the amount of dopant was varied and the effects on various parameters were observed by different techniques. The morphology of PAni/MgB2 nanocomposites was determined using SEM. The temperature dependence of the conductivity of all composites was measured in the temperature range 300–450 K and it was observed that samples having a high concentration of MgB2 show the highest conductivity. The molecular structure of the nanocomposites was further characterized by Fourier Transform IR spectroscopy which showed small structural changes in the backbone of PAni. IV measurements showed that the current increases on increasing MgB2 content. UV−visible spectra exposed the occurrence of an indirect optical transition in the composite. © 2013 Society of Chemical Industry

Ancillary