The paper specifies the electrostatic spinning process of specific polymeric materials, such as polyvinylidene fluoride (PVDF), polyamide-6 (PA6, Nylon-6) and their combination PVDF/PA6. By combining nanofibers from two different materials during the spinning process, new structures with different mechanical, chemical, and physical properties can be created. The materials and their combinations were subjected to several measurements: scanning electron microscopy (SEM) to capture topography; contact angle of the liquid wettability on the sample surface to observe hydrophobicity and hydrophilicity; crystallization events were determined by differential scanning calorimetry (DSC); X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and Fourier-transform infrared spectroscopy (FT-IR) to describe properties and their changes at the chemical level. Furthermore, for the electrical properties of the sample, the dielectric characteristics and the piezoelectric coefficient were measured. The advantage of the addition of co-polymers was to control the properties of PVDF samples and understand the reasons for the changed functionality. The innovation point of this work is the complex analysis of PVDF modification caused by mixing with nylon PA6. Here we emphasize that the application of nylon during the spin influences the properties and structure (polarization, crystallization) of PVDF.

Central European Institute of Technology Purkyňova 656 123 61200 Brno Czech Republic

Department of Ceramics and Polymers Faculty of Mechanical Engineering Brno University of Technology Technická 2896 2 61600 Brno Czech Republic

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

Department of Physics Faculty of Electrical Engineering and Communication Brno University of Technology Technická 2848 8 61600 Brno Czech Republic

Directorate of Research Development and Innovation Management Technical University of Cluj Napoca Constantin Daicoviciu Street No 15 400020 Cluj Napoca Cluj County Romania

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