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Preparation and evaluation of magnetic field-induced orientation on magnetic nanoparticles on PVA nanocomposite films

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Abstract

Magnetite Fe3O4 particles (M) were dispersed in polyvinyl alcohol (PVA) and oriented successfully by applying low external magnetic field. Observed orientation was verified by image analysis using ImageJ software. Crystallinity of the M/PVA samples was examined using DSC, showing a lower crystallinity by addition of particles and higher crystallinity resulting from orientation. Orientation of 0.05 and 0.1 wt% of M particles increased crystallinity of nanocomposites 39 and 57%, respectively. Tensile tests were also measured to examine the mechanical properties of oriented and non-oriented samples. Results show that the mechanical properties of samples including elongation at break and modulus had improved in the direction of oriented particles. Afterward, graphene oxide particles were magnetized [magnetic graphene oxide (MGO)] and dispersed in PVA resulting in improved mechanical properties. PVA/MGO nanocomposites showed better mechanical properties than PVA/M, although no improvement in the crystallinity was observed.

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Authors and Affiliations

  1. Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran

    Mozhgan Chaichi & Farhad Sharif

  2. Amirkabir Nanotechnology Research Institute (ANTRI), Amirkabir University of Technology, Tehran, Iran

    Saeedeh Mazinani

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  1. Mozhgan Chaichi
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  2. Farhad Sharif
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  3. Saeedeh Mazinani
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Correspondence to Farhad Sharif.

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Chaichi, M., Sharif, F. & Mazinani, S. Preparation and evaluation of magnetic field-induced orientation on magnetic nanoparticles on PVA nanocomposite films. J Mater Sci 53, 5051–5062 (2018). https://doi.org/10.1007/s10853-017-1923-7

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  • DOI: https://doi.org/10.1007/s10853-017-1923-7

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