Polyvinylidene fluoride (PVDF) is a modern polymer material used in a wide variety of ways. Thanks to its excellent resistance to chemical or thermal degradation and low reactivity, it finds use in biology, chemistry, and electronics as well. By enriching the polymer with an easily accessible and cheap variant of graphite, it is possible to affect the ratio of crystalline phases. A correlation between the ratios of crystalline phases and different properties, like dielectric constant as well as piezo- and triboelectric properties, has been found, but the relationship between them is highly complex. These changes have been observed by a number of methods from structural, chemical and electrical points of view. Results of these methods have been documented to create a basis for further research and experimentation on the usability of this combined material in more complex structures and devices.

Central European Institute of Technology BUT Purkyňova 123 612 00 Brno Czech Republic

Department of Ceramics and Polymers Faculty of Mechanical Engineering Brno University of Technology Technická 2 616 69 Brno Czech Republic

Department of Inorganic Chemistry and Chemical Ecology Dagestan State University Makhachkala St M Gadjieva 43 a 367015 Dagestan Republic Russia

Department of Physics Faculty of Electrical Engineering and Communication Brno University of Technology Technická 2848 8 616 00 Brno Czech Republic

Faculty of Mechanical Engineering Brno University of Technology Technická 2896 2 616 69 Brno Czech Republic

Institute of Scientific Instruments of the Czech Academy of Sciences Královopolská 147 612 64 Brno Czech Republic

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