Multifunctional highly aligned graphite nanoplatelet-polyether imide composite in film form

    Research output: Contribution to journalArticle

    Abstract

    The objective of this research is to investigate the effect of adding graphite nanoplatelet (GNP) particles into polyether imide film. Extruded films were produced with various amounts of GNP and different degrees of post-extrusion stretching. A uniform high degree of alignment of the GNP particles along both machine direction (stretching) and transverse direction was obtained under high stretching ratios. Tensile properties including tensile modulus, strength and elongation were investigated. O2 permeability was reduced with the increase of GNP loading and stretching ratio of the film. The Bharadwaj model was applied to predict the permeability. Information of degree of alignment was obtained through analyzing SEM images in image-processing software and used with the Bharadwaj model, resulting in good agreement with experimental data. Annealing of the stretched films under 340 °C showed a significant improvement of both electrical and thermal conductivity in the film direction.

    Original languageEnglish (US)
    JournalMaterials Chemistry and Physics
    DOIs
    StateAccepted/In press - Nov 25 2015

    Profile

    Arthroscopy
    Graphite
    graphite
    Diatrizoate
    Stretching
    Acrylates
    Anthralin
    Antitubercular Agents
    Polyethers
    imides
    permeability
    alignment
    Joint Loose Bodies
    Dextrothyroxine
    Coccidiostats
    Caprylates
    Learned Helplessness
    Electric Conductivity
    Epinephrine
    Image processing

    Keywords

    • Annealing
    • Composite materials
    • Electron microscopy
    • Mechanical properties

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

    Cite this

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    title = "Multifunctional highly aligned graphite nanoplatelet-polyether imide composite in film form",
    abstract = "The objective of this research is to investigate the effect of adding graphite nanoplatelet (GNP) particles into polyether imide film. Extruded films were produced with various amounts of GNP and different degrees of post-extrusion stretching. A uniform high degree of alignment of the GNP particles along both machine direction (stretching) and transverse direction was obtained under high stretching ratios. Tensile properties including tensile modulus, strength and elongation were investigated. O2 permeability was reduced with the increase of GNP loading and stretching ratio of the film. The Bharadwaj model was applied to predict the permeability. Information of degree of alignment was obtained through analyzing SEM images in image-processing software and used with the Bharadwaj model, resulting in good agreement with experimental data. Annealing of the stretched films under 340 °C showed a significant improvement of both electrical and thermal conductivity in the film direction.",
    keywords = "Annealing, Composite materials, Electron microscopy, Mechanical properties",
    author = "Huang Wu and Drzal, {Lawrence T.}",
    year = "2015",
    month = "11",
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    journal = "Materials Chemistry and Physics",
    issn = "0254-0584",
    publisher = "Elsevier BV",

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    N2 - The objective of this research is to investigate the effect of adding graphite nanoplatelet (GNP) particles into polyether imide film. Extruded films were produced with various amounts of GNP and different degrees of post-extrusion stretching. A uniform high degree of alignment of the GNP particles along both machine direction (stretching) and transverse direction was obtained under high stretching ratios. Tensile properties including tensile modulus, strength and elongation were investigated. O2 permeability was reduced with the increase of GNP loading and stretching ratio of the film. The Bharadwaj model was applied to predict the permeability. Information of degree of alignment was obtained through analyzing SEM images in image-processing software and used with the Bharadwaj model, resulting in good agreement with experimental data. Annealing of the stretched films under 340 °C showed a significant improvement of both electrical and thermal conductivity in the film direction.

    AB - The objective of this research is to investigate the effect of adding graphite nanoplatelet (GNP) particles into polyether imide film. Extruded films were produced with various amounts of GNP and different degrees of post-extrusion stretching. A uniform high degree of alignment of the GNP particles along both machine direction (stretching) and transverse direction was obtained under high stretching ratios. Tensile properties including tensile modulus, strength and elongation were investigated. O2 permeability was reduced with the increase of GNP loading and stretching ratio of the film. The Bharadwaj model was applied to predict the permeability. Information of degree of alignment was obtained through analyzing SEM images in image-processing software and used with the Bharadwaj model, resulting in good agreement with experimental data. Annealing of the stretched films under 340 °C showed a significant improvement of both electrical and thermal conductivity in the film direction.

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    KW - Electron microscopy

    KW - Mechanical properties

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