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O.S. Gefle 2 Articles
Metal-Polymer Composites and their Characterization
S.M. Lebedev, O.S. Gefle, M.V. Semenikhin
J Korean Powder Metall Inst. 2011;18(2):181-187.
DOI: https://doi.org/10.4150/KPMI.2011.18.2.181
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AbstractAbstract PDF
PVDF was used as a polymeric matrix material in this work. Nickel powders with average particles size of 200 nm or 72 nm were used as fillers. PVDF/metal submicro- and nanocomposites were prepared by means of a mixing in twin screw extruder and planetary ball mill, respectively. All samples were prepared by hot pressing method. Their electrical, thermal and morphological properties were examined by dielectric spectroscopy, DSC, FTIR, XRD, optical microscopy and scanning electron microscopy. It was found that all properties of composites were strongly modified depending on the content of metal powders and filler particles size. Particularly, specific volume resistivity of PVDF/Ni composite with 0.2 wt.% of Ni was increased by factor of 1.5~4.

Citations

Citations to this article as recorded by  
  • PCL‐CNT nanocomposites prepared by melt compounding and evaluation of their basic properties
    Sergey M. Lebedev
    Polymer Composites.2020; 41(5): 1830.     CrossRef
  • Biodegradable Electrically Conductive Polycaprolacton-Based Composites Filled with Carbon Nanotubes
    S. M. Lebedev, E. T. Amitov, E. A. Mikutskiy
    Russian Physics Journal.2020; 62(10): 1753.     CrossRef
  • Piezoelectric characteristics of electrospun PVDF as a function of phase-separation temperature and metal salt content
    Gajula Prasad, Ponnan Sathiyanathan, Arun Anand Prabu, Kap Jin Kim
    Macromolecular Research.2017; 25(10): 981.     CrossRef
Influence of Processing Conditions on PVDF Properties
S.M. Lebedev, O.S. Gefle, M.V. Semenikhin
J Korean Powder Metall Inst. 2011;18(2):176-180.
DOI: https://doi.org/10.4150/KPMI.2011.18.2.176
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AbstractAbstract PDF
Study of the main properties of PVDF films produced by two processing technologies such as hot pressing from a melt or solution casting was the aim of this paper. All samples were prepared of as-received PVDF powder. First group of samples was prepared by the hot pressing. Second group of samples was prepared by the solution casting method. PVDF powder was dissolved in dimethylformamide. To characterize properties of samples, different experimental methods such as FRA (dielectric spectroscopy), IR-spectroscopy and DSC/TGA analysis were used in this work. It was found that IR-spectra of both studied groups do not change compared to that for virgin PVDF powder. It confirms that molecular structure is practically independent on the processing technology of samples. The only difference has been found that new band centered at 1723;cm-1 appears for samples prepared by the hot pressing method. This absorption band is related with formation of C=C bonds in samples prepared by the hot pressing method in contrast both to PVDF powder and samples prepared by the solution casting method.

Journal of Powder Materials : Journal of Powder Materials