Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Influence of Processing Conditions on PVDF Properties

  • Lebedev, S.M. (High-Voltage Research Institute of National Research Tomsk Polytechnic University) ;
  • Gefle, O.S. (High-Voltage Research Institute of National Research Tomsk Polytechnic University) ;
  • Semenikhin, M.V. (High-Voltage Research Institute of National Research Tomsk Polytechnic University)
  • Received : 2011.02.16
  • Accepted : 2011.04.11
  • Published : 2011.04.28
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Abstract

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.

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