J Mater Sci Technol ›› 2012, Vol. 28 ›› Issue (5): 391-395.

• Nanomaterials and Nanotechnology • Previous Articles     Next Articles

Oxygen Barrier of Multiwalled Carbon Nanotube/Polymethyl Methacrylate Nanocomposites Prepared by in situ Method

Ajaya K. Pradhan1), Sarat K. Swain1,2)   

  1. 1) Department of Chemistry, North Orissa University, Takatpur, Baripada 757003, India
    2) Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur 768018, India
  • Received:2011-06-13 Revised:2011-12-29 Online:2012-05-30 Published:2012-05-29
  • Contact: Sarat KSwain

Abstract: Multiwalled carbon nanotubes (MWCNTs)/poly(methyl methacrylate) (PMMA) nanocomposites were prepared by ultrasonic assisted emulsifier free emulsion polymerization technique with variable concentration of functionalized carbon nanotubes. MWCNTs were functionalized with H2SO4 and HNO3 with continuing sonication and polished by H2O2. The appearance of Fourier transform infrared absorption bands in the PMMA/MWCNT nanocomposites showed that the functionalized MWCNT interacted chemically with PMMA macromolecules. The surface morphology of functionalized MWCNT and PMMA/MWCNT nanocomposites were studied by scanning electron microscopy. The dispersion of MWCNT in PMMA matrix was evidenced by high resolution transmission electron microscopy. The oxygen permeability of PMMA/MWCNT nanocomposites gradually decreased with increasing MWCNT concentrations.

Key words: Nanocomposites, Morphology, Permeability, Dispersion