Stability enhancement of MWCNT/water nanofluids using PVA surfactant
Nanofluids are prepared by dispersing MWCNT into aqueous polyvinyl alcohol (PVA) suspensions used as base fluids. This paper investigates the effectiveness of PVA as surfactant in stabilising MWCNT/water nanofluids. The stability of nanofluids is measured by Zetasizer Nano-ZS of only the stable samp...
| Main Authors: | , , , , , |
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| Format: | Article |
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Inderscience Publishers
2020
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| Online Access: | http://psasir.upm.edu.my/id/eprint/85893/ |
| _version_ | 1848860204875120640 |
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| author | Rashidi, Saba Abdullah, Luqman Chuah Walvekar, Rashmi Gangasa Mohammad Khalid Razi, A. Fakhrul M. Y., Faizah |
| author_facet | Rashidi, Saba Abdullah, Luqman Chuah Walvekar, Rashmi Gangasa Mohammad Khalid Razi, A. Fakhrul M. Y., Faizah |
| author_sort | Rashidi, Saba |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Nanofluids are prepared by dispersing MWCNT into aqueous polyvinyl alcohol (PVA) suspensions used as base fluids. This paper investigates the effectiveness of PVA as surfactant in stabilising MWCNT/water nanofluids. The stability of nanofluids is measured by Zetasizer Nano-ZS of only the stable samples. The morphology of carbon nanotube (CNT) and its interaction with PVA dispersant was analysed using SEM and in order to observe the dispersion characteristics of all samples, image analysis was carried out using TEM. The results demonstrated that zeta potential is affected by the concentration of CNT (0.01-0.1 wt.%). The zeta potential values (-19.96 mV to -33.3 mV) increased with an increase in CNT concentration. The SEM and TEM results showed that the amount of PVA added to each CNT concentration is sufficient to provide maximum stability to the CNT-water nanofluids, no excessive agglomerations or significant clusters of PVA are observed from the surface of CNT. |
| first_indexed | 2025-11-15T12:41:31Z |
| format | Article |
| id | upm-85893 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T12:41:31Z |
| publishDate | 2020 |
| publisher | Inderscience Publishers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-858932023-10-12T03:44:54Z http://psasir.upm.edu.my/id/eprint/85893/ Stability enhancement of MWCNT/water nanofluids using PVA surfactant Rashidi, Saba Abdullah, Luqman Chuah Walvekar, Rashmi Gangasa Mohammad Khalid Razi, A. Fakhrul M. Y., Faizah Nanofluids are prepared by dispersing MWCNT into aqueous polyvinyl alcohol (PVA) suspensions used as base fluids. This paper investigates the effectiveness of PVA as surfactant in stabilising MWCNT/water nanofluids. The stability of nanofluids is measured by Zetasizer Nano-ZS of only the stable samples. The morphology of carbon nanotube (CNT) and its interaction with PVA dispersant was analysed using SEM and in order to observe the dispersion characteristics of all samples, image analysis was carried out using TEM. The results demonstrated that zeta potential is affected by the concentration of CNT (0.01-0.1 wt.%). The zeta potential values (-19.96 mV to -33.3 mV) increased with an increase in CNT concentration. The SEM and TEM results showed that the amount of PVA added to each CNT concentration is sufficient to provide maximum stability to the CNT-water nanofluids, no excessive agglomerations or significant clusters of PVA are observed from the surface of CNT. Inderscience Publishers 2020 Article PeerReviewed Rashidi, Saba and Abdullah, Luqman Chuah and Walvekar, Rashmi Gangasa and Mohammad Khalid and Razi, A. Fakhrul and M. Y., Faizah (2020) Stability enhancement of MWCNT/water nanofluids using PVA surfactant. International Journal of Nanotechnology, 16 (11/12). 631 - 639. ISSN 1475-7435; 1741-8151 https://www.inderscience.com/info/inarticle.php?artid=107357 10.1504/IJNT.2019.107357 |
| spellingShingle | Rashidi, Saba Abdullah, Luqman Chuah Walvekar, Rashmi Gangasa Mohammad Khalid Razi, A. Fakhrul M. Y., Faizah Stability enhancement of MWCNT/water nanofluids using PVA surfactant |
| title | Stability enhancement of MWCNT/water nanofluids using PVA surfactant |
| title_full | Stability enhancement of MWCNT/water nanofluids using PVA surfactant |
| title_fullStr | Stability enhancement of MWCNT/water nanofluids using PVA surfactant |
| title_full_unstemmed | Stability enhancement of MWCNT/water nanofluids using PVA surfactant |
| title_short | Stability enhancement of MWCNT/water nanofluids using PVA surfactant |
| title_sort | stability enhancement of mwcnt/water nanofluids using pva surfactant |
| url | http://psasir.upm.edu.my/id/eprint/85893/ http://psasir.upm.edu.my/id/eprint/85893/ http://psasir.upm.edu.my/id/eprint/85893/ |