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Year 2021 Volume 19, Issue 4 |
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Issues/2021/vol. 19 /Issue 4 |
Ahmed Hashim and Qassim Hadi
«Novel Pressure Sensors Prepared from PVA–CMC–TiC Nanocomposites: Fabrication and Characterization
»
0873–0881 (2021)
PACS numbers: 72.80.Tm, 78.20.Ci, 78.30.Jw, 78.67.Sc, 81.07.Pr, 82.35.Np
In this paper, preparation of new pressure sensors with low cost and lightweight, and their structural and dielectric properties are investigated. The pressure sensors are prepared from polyvinyl alcohol (PVA; 50 wt.%) and carboxyl methylcellulose (CMC; 50 wt.%) with different concentrations (1, 2 and 3 wt.%) of titanium-carbide nanoparticles. The dielectric properties are measured in the frequency range from 100 Hz to 5 MHz. The experimental results show that the dielectric constant and dielectric loss of PVA–CMC–TiC nanocomposites are decreased with increase in frequency of applied electric field. The A.C. electrical conductivity increases with increasing the frequency. The dielectric constant, dielectric loss, and A.C. electrical conductivity of PVA–CMC blend are increased with increase of concentration of TiC nanoparticles. The results of pressure sensor application show that the electrical resistance of PVA–CMC–TiC nanocomposites decreases with increase in pressure.
Key words: nanocomposite, titanium carbide, conductivity, pressure sensor
https://doi.org/10.15407/nnn.19.04.873
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