TY  - JOUR
AU  - O.V. Kovalchuk
AU  - J. Prochazkova
AU  - A. Kolanowska
AU  - S. Boncel
AU  - J. Mariano
AU  - K. Zolochevska
AU  - T.M. Kovalchuk
AU  - P. Kopčanský
AU  - I. Safarik
TI  - Effect of modification of nonwoven textiles with biochar and multi-walled carbon nanotubes on their dielectric properties
T2  - Semiconductor Physics, Quantum Electronics & Optoelectronics
VL  - 27
IS  - 3
SP  - 308
EP  - 314
PY  - 2024
DO  - 10.15407/spqeo27.03.308
UR  - https://doi.org/10.15407/spqeo27.03.308
AB  - 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.
KW  - nonwoven textile
KW  - bound biochar
KW  - multi-walled carbon nanotubes
KW  - dielectric properties
KW  - scanning electron microscopy
KW  - activation energy of conductivity
KW  - semiconducting character of conductivity
ER  -