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    • Keywords


      Nanocomposite; sonication; oxygen permeability; flame retardant.

    • Abstract


      PMMA/clay nanocomposites were synthesized by ultrasound assisted emulsifier-free emulsion polymerization technique. Ultrasound waves of different power and frequencies were applied to enhance the dispersion of the clay layers with polymer matrix. The structural information of the synthesized materials was studied by X-ray diffraction (XRD) and it was revealed that the interlayer spacing increased with clay loading. The magnitude of dispersion of the clay in the polymer matrix was detected by transmission electron microscopy (TEM). The Young’s modulus, breaking stress, elongation at break, toughness, yield stress and yield strain of the nanocomposites as a function of different clay concentrations and ultrasonic power were measured. Particle diameter of the nanocomposites was measured by laser diffraction technique. Oxygen permeability of the samples was studied and it was found that the oxygen flow rate was reduced by the combined effect of clay loading and ultrasound. The flame retardant property of the nanocomposites due to clay dispersion was investigated by measurement of limiting oxygen index (LOI).

    • Author Affiliations


      Subrata K Patra1 Gyanaranjan Prusty1 Sarat K Swain1 2

      1. Department of Chemistry, North Orissa University, Takatpur, Baripada 757 003, India
      2. Department of Chemistry, Veer Surendra Sai University of Technology, Sambalpur 768 018, India
    • Dates

  • Bulletin of Materials Science | News

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