Nanocomposite films of poly(vinylidene fluoride) filled with polyvinylpyrrolidone-coated multiwalled carbon nanotubes: Enhancement of β-polymorph formation and tensile properties

Authors

  • Mounir El Achaby,

    1. Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Institute of Nanomaterials and Nanotechnologies (NANOTECH), Rabat Design, rue Mohammed Eljazouli, Madinate Alirfane, 10100, Rabat, Morocco
    2. Faculty of Science, Mohammed V University, 4 Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco
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  • Fatima-Ezzahra Arrakhiz,

    1. Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Institute of Nanomaterials and Nanotechnologies (NANOTECH), Rabat Design, rue Mohammed Eljazouli, Madinate Alirfane, 10100, Rabat, Morocco
    2. Faculty of Science, Mohammed V University, 4 Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco
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  • Sébastien Vaudreuil,

    1. Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Institute of Nanomaterials and Nanotechnologies (NANOTECH), Rabat Design, rue Mohammed Eljazouli, Madinate Alirfane, 10100, Rabat, Morocco
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  • El Mokhtar Essassi,

    1. Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Institute of Nanomaterials and Nanotechnologies (NANOTECH), Rabat Design, rue Mohammed Eljazouli, Madinate Alirfane, 10100, Rabat, Morocco
    2. Faculty of Science, Mohammed V University, 4 Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco
    3. Hassan II Academy of Science and Technology, Km 11, Avenue Mohammed VI, Rabat, Morocco
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  • Abouelkacem Qaiss,

    Corresponding author
    1. Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Institute of Nanomaterials and Nanotechnologies (NANOTECH), Rabat Design, rue Mohammed Eljazouli, Madinate Alirfane, 10100, Rabat, Morocco
    • Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Institute of Nanomaterials and Nanotechnologies (NANOTECH), Rabat Design, rue Mohammed Eljazouli, Madinate Alirfane, 10100, Rabat, Morocco
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  • Mostapha Bousmina

    1. Hassan II Academy of Science and Technology, Km 11, Avenue Mohammed VI, Rabat, Morocco
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Abstract

To improve interactions between carbon nanotubes (CNTs) and poly(vinylidene fluoride) (PVDF) matrix, multiwalled CNTs (MWCNTs) were successfully coated with amphiphilic polyvinylpyrrolidone (PVP) using an ultrasonication treatment performed in aqueous solution. It was found that PVP chains could be attached noncovalently onto the nanotubes' surface, enabling a stable dispersion of MWCNTs in both water and N,N-dimethylformamide. PVP-coated MWCNTs/PVDF nanocomposite films were prepared by a solution casting method. The strong specific dipolar interaction between the PVP's carbonyl group (C[DOUBLE BOND]O) and the PVDF's fluorine group C[DOUBLE BOND]F2 results in high compatibility between PVP and PVDF, helping PVP-coated MWCNTs to be homogenously dispersed within PVDF. Fourier transform infrared and X-ray diffraction characterization revealed that the as-prepared nanocomposite PVDF films exhibit a purely β-polymorph even at a very low content of PVP-wrapped MWCNTs (0.1 wt%) while this phase is totally absent in the corresponding unmodified MWCNTs/PVDF nanocomposites. A possible mechanism of β-phase formation in PVP-coated MWCNTs/PVDF nanocomposites has been discussed. Furthermore, the tensile properties of PVDF nanocomposites as function of the content in PVP-coated MWCNTs were also studied. Results shows that the addition of 2.0 wt% of PVP-coated MWCNTs lead to a 168% increase in Young's modulus and a 120% in tensile strength. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers

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