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    • Improved covalent functionalization of multi-walled carbon nanotubes using ascorbic acid for poly(amide–imide) composites having dopamine linkages

      SHADPOUR MALLAKPOUR AMIN ZADEHNAZARI

      Volume 40 Issue 1 February 2017 pp 213-222

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/040/01/0213-0222

    • Keywords

       

      Multi-walled carbon nanotube; ascorbic acid; mechanical properties; thermal stability; transmission electron microscopy.

    • Abstract

       

      Ascorbic acid has been covalently linked to multi-walled carbon nanotubes (MWCNTs). The structures of the functionalized MWCNTs were characterized with Fourier-transform infrared spectroscopy. Thermogravimetric analysis results also demonstrated the presence of organic portions of the functionalized MWCNTs. Polymer composites based on a nanostructured poly(amide–imide) (PAI) were fabricated by an ex situ technique with 5, 10 and 15% loading by weight. Composite films were made by the solvent casting method. The thermal stabilityof the composites increased with even a small amount of modified MWCNT added. Tensile tests were conducted and depicted an increase in the elastic modulus with increasing MWCNTs content. X-ray diffraction study of thecomposites also indicated that the composites incorporated MWCNTs in the polymer chain.

    • Author Affiliations

       

      SHADPOUR MALLAKPOUR1 2 3 AMIN ZADEHNAZARI1

      1. Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, I. R. Iran
      2. Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, I. R. Iran
      3. Center of Excellence in Sensors and Green Chemistry, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, I. R. Iran

    • Dates

       
      Published
      15 February 2017
      Manuscript received
      1 November 2015
      Accepted
      20 June 2016

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