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Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant

A nanofluid is a suspension of nano-sized particles dispersed in a base fluid. It is very much obligatory to know more about stability and thermal characteristics of such a nanofluid for their further use in practical applications. In this research, multiwalled carbon nanotubes (CNT) is dispersed in...

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Main Authors: Rashidi, Saba, Rashmi, W., Abdullah, Luqman Chuah, Khalid, M., Ahmadun, Fakhrul-Razi, Faizah, M. Y.
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://psasir.upm.edu.my/id/eprint/63563/1/Thermal%20stability%20and%20conductivity%20of%20carbon%20nanotube%20nanofluid%20using%20xanthan%20gum%20as%20surfactant.pdf
http://psasir.upm.edu.my/id/eprint/63563/
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spelling my.upm.eprints.635632018-11-05T03:23:31Z http://psasir.upm.edu.my/id/eprint/63563/ Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant Rashidi, Saba Rashmi, W. Abdullah, Luqman Chuah Khalid, M. Ahmadun, Fakhrul-Razi Faizah, M. Y. A nanofluid is a suspension of nano-sized particles dispersed in a base fluid. It is very much obligatory to know more about stability and thermal characteristics of such a nanofluid for their further use in practical applications. In this research, multiwalled carbon nanotubes (CNT) is dispersed in water. CNT dispersed in water is highly unstable and it sediments rapidly due to the Vander Waals force of attraction. Therefore, to overcome this limitation, xanthan gum (XG) was added which behave as a promising dispersant followed by 4 h water bath sonication. Experimental work includes stability studies using UV Vis spectroscopy with respect to CNT concentration (0.01 and 0.1 wt. %) and XG concentration (0.04 and 0.2 wt. %). The thermal conductivity of the most stable suspensions was measured using KD 2 Pro as a function of temperature (25-70°C) and CNT concentration. The optimum XG concentration was found for each CNT concentration studied. Thermal conductivity was observed to be strongly dependent on temperature and CNT concentration. The dispersion state of the CNT-water nanofluid is further examined using scanning electron microscope (SEM). In short, CNT nanofluids are found to be more suitable for heat transfer applications in many industries due to their enhanced thermal conductivity property. This work provides useful insight on the behavior of CNT nanofluids. Penerbit Universiti Kebangsaan Malaysia 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/63563/1/Thermal%20stability%20and%20conductivity%20of%20carbon%20nanotube%20nanofluid%20using%20xanthan%20gum%20as%20surfactant.pdf Rashidi, Saba and Rashmi, W. and Abdullah, Luqman Chuah and Khalid, M. and Ahmadun, Fakhrul-Razi and Faizah, M. Y. (2017) Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant. Sains Malaysiana, 46 (7). 1017 - 1024. ISSN 0026-6039 10.17576/jsm-2017-4607-02
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A nanofluid is a suspension of nano-sized particles dispersed in a base fluid. It is very much obligatory to know more about stability and thermal characteristics of such a nanofluid for their further use in practical applications. In this research, multiwalled carbon nanotubes (CNT) is dispersed in water. CNT dispersed in water is highly unstable and it sediments rapidly due to the Vander Waals force of attraction. Therefore, to overcome this limitation, xanthan gum (XG) was added which behave as a promising dispersant followed by 4 h water bath sonication. Experimental work includes stability studies using UV Vis spectroscopy with respect to CNT concentration (0.01 and 0.1 wt. %) and XG concentration (0.04 and 0.2 wt. %). The thermal conductivity of the most stable suspensions was measured using KD 2 Pro as a function of temperature (25-70°C) and CNT concentration. The optimum XG concentration was found for each CNT concentration studied. Thermal conductivity was observed to be strongly dependent on temperature and CNT concentration. The dispersion state of the CNT-water nanofluid is further examined using scanning electron microscope (SEM). In short, CNT nanofluids are found to be more suitable for heat transfer applications in many industries due to their enhanced thermal conductivity property. This work provides useful insight on the behavior of CNT nanofluids.
format Article
author Rashidi, Saba
Rashmi, W.
Abdullah, Luqman Chuah
Khalid, M.
Ahmadun, Fakhrul-Razi
Faizah, M. Y.
spellingShingle Rashidi, Saba
Rashmi, W.
Abdullah, Luqman Chuah
Khalid, M.
Ahmadun, Fakhrul-Razi
Faizah, M. Y.
Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
author_facet Rashidi, Saba
Rashmi, W.
Abdullah, Luqman Chuah
Khalid, M.
Ahmadun, Fakhrul-Razi
Faizah, M. Y.
author_sort Rashidi, Saba
title Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_short Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_full Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_fullStr Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_full_unstemmed Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_sort thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/63563/1/Thermal%20stability%20and%20conductivity%20of%20carbon%20nanotube%20nanofluid%20using%20xanthan%20gum%20as%20surfactant.pdf
http://psasir.upm.edu.my/id/eprint/63563/
_version_ 1643837831858094080
score 13.211869

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