¹Kyiv National University of Technologies and Design, Kyiv, Ukraine
²Institute of Physics, NAS of Ukraine, Kyiv, Ukraine
³Department of Nanobiotechnology, ISBB, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Czech Republic
⁴Institute of Chemistry, University of Silesia in Katowice, Poland
⁵Centre for Organic and Nanohybrid Electronics, Silesian University of Technology, Poland
⁶Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Poland
⁷Department of Physics, FCT, Universidade do Algarve, Portugal
⁸Center of Physics and Engineering of Advanced Materials, Lisboa, Portugal
⁹Institute of Experimental Physics, Slovak Academy of Sciences, Kosice, Slovakia
¹⁰Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University, Kosice, Slovakia
¹¹V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, Kyiv, Ukraine
¹²Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Olomouc, Czech Republic
*Corresponding author e-mail: akoval@knutd.com.ua

Abstract. Dielectric properties of native nonwoven textile as well as textile with bound biochar and multi-walled carbon nanotubes in the frequency range of 10 to 5·105 Hz and at the temperatures of 30 to 60 °C have been investigated. The capacity of native nonwoven textile has been shown to decrease with the temperature according to the Arrhenius law. The activation energy of the temperature dependence of the capacity has been estimated to be 0.09 eV. It has been demonstrated that regardless of the temperature, the frequency dependence of the resistance of the nonwoven textile can be described by two exponential functions. In the presence of bound biochar and multi-walled carbon nanotubes in the nonwoven textile, the conductivity current was 4 orders of magnitude greater than the bias current and increased with the temperature according to the Arrhenius law. The activation energy of the temperature dependence of the inverse resistance (an analogue of the conductivity for homogeneous samples with the same dimensions) has been estimated to be 0.19 eV for the samples with multi-walled carbon nanotubes and 0.62 eV for the samples with bound biochar.

Keywords: nonwoven textile, bound biochar, multi-walled carbon nanotubes, dielectric properties, scanning electron microscopy, activation energy of conductivity, semiconducting character of conductivity.

Full Text (PDF)

Back to Volume 27 N3