Electrical Conductivity and Dielectric Properties of Ethylene Glycol-Based Nanofluids Containing Silicon Oxide-Lignin Hybrid Particles

This paper presents results of experimental investigation into dielectric properties of silicon oxide lignin (SiO -L) particles dispersed with various mass fractions in ethylene glycol (EG). Measurements were conducted at a controlled temperature, which was changed from 298.15 to 333.15 K with an ac...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2019-07, Vol.9 (7), p.1008
Main Authors: Fal, Jacek, Wanic, Michał, Budzik, Grzegorz, Oleksy, Mariusz, Żyła, Gaweł
Format: Article
Language:English
Subjects:
Alternating current
Broadband
Dielectric properties
Direct current
Efficiency
Electrical conductivity
Electrical properties
Electrical resistivity
Ethylene
Ethylene glycol
Frequency ranges
Fuel cells
Heat conductivity
Heat transfer
Lignin
Measurement methods
Nanofluids
Nanoparticles
Optical properties
Relaxation time
Researchers
Silica
Silicon
Silicon dioxide
Silicon nitride
Silicon oxide
Silicon oxides
Solar energy
Spectroscopy
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Summary:This paper presents results of experimental investigation into dielectric properties of silicon oxide lignin (SiO -L) particles dispersed with various mass fractions in ethylene glycol (EG). Measurements were conducted at a controlled temperature, which was changed from 298.15 to 333.15 K with an accuracy of 0.5 and 0.2 K for dielectric properties and direct current (DC) electrical conductivity, respectively. Dielectric properties were measured with a broadband dielectric spectroscopy device in a frequency range from 0.1 to 1 MHz, while DC conductivity was investigated using a conductivity meter MultiLine 3410 working with LR925/01 conductivity probe. Obtained results indicate that addition of even a small amount of SiO -L nanoparticles to ethylene glycol cause a significant increase in permittivity and alternating current (AC) conductivity as well as DC conductivity, while relaxation time decrease. Additionally, both measurement methods of electrical conductivity are in good agreement.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano9071008