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Journal of Nanoscience Letters 2013, 3: 26
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Research Article
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Preparation of flexible magnetic nanocomposites of linear low-density polyethylene-polybenzoxazine-magnetic nanoparticles and their mechanical and magnetic properties
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Amit B. Rajputa, Majid Sharifib, Harshawardhan V. Polc, Manoj K. Patrad, Sampat R. Vaderad, Pravin M. Singrue, Narendra N. Ghosha
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a Nano-materials Lab, Department of Chemistry, Birla Institute of Technology and Science, Pilani - KK Birla Goa campus, Goa 403726, India
b Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA 19104, USA
c Polymer Science and Engineering Division, National Chemical Laboratory, Pune 411008, India
d Defence Lab, Jodhpur 342011, India
e Department of Mechanical Engineering, Birla Institute of Technology and Science, Pilani - KK Birla Goa campus, Goa 403726, India
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Abstract |
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A simple method for the preparation of magnetic nanocomposites consisting of magnetic nanoparticles (MNPs), polybenzoxazine (PB), linear low density polyethylene (LLDPE) and LLDPE-g-Maleic anhydride (LgM) is described. BaFe12O19 and Ni0.8Zn0.2Fe2O4 were used as MNPs. Composites were prepared by first forming benzoxazine-MNPs composite followed by melt blending with LLDPE and thermal curing of benzoxazine. The composites were characterized by X-Ray diffraction, thermo gravimetric analysis and differential scanning calorimeter, scanning electron microscopy, universal testing machine and vibrating sample magnetometer. Composite consisting of LLDPE, PB and LgM exhibited higher tensile strength (23.81 MPa) than that of pure LLDPE and more elongation at break (6.11%) than pure polybenzoxazine. Incorporation of MNPs in the composites did not affect much in the mechanical properties. Magnetic properties of the composites mostly were dependent on the nature of MNPs and loading level of MNPs in the composite. The composite films exhibited mechanical flexibility as well as magnetic properties.
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Keywords |
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Composite; Ferrite; Polybenzoxazine; LLDPE; Mechanical property; Magnetic property
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