Extensive stability assessment of tio/polyvinyl ether nanolubricant with physical homogenization

Mohd Farid, Ismail and Wan Hamzah, Azmi and Rizalman, Mamat and Sharma, Korada Viswanatha and Ali, Hafiz Muhammad (2023) Extensive stability assessment of tio/polyvinyl ether nanolubricant with physical homogenization. Lubricants, 11 (67). pp. 1-18. ISSN 2075-4442 (Online). (Published)

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Proper preparation and stability evaluation of the nanolubricant shall be established when applying the nanoparticle dispersion technique in a two-phase system. The stability of the nanolubricant ensures the maximum benefit gained from the dispersion of nanoparticles in specified Polyvinyl ether (PVE). In this study, TiO2/PVE nanolubricant was prepared using two methods of physical homogenization: high-speed homogenizer (HSH) and ultrasonication bath. The HSH used a preparation time of up to 300 s in the stability assessment. Meanwhile, the ultrasonication bath had a preparation time of 1, 3, 5, and 7 h. The stability condition of the nanolubricant was evaluated using photo capturing, ultraviolet-visible (UV-Vis) spectrophotometer, zeta potential, and zeta sizer. A sample with 180 s of preparation time shows the best stability condition from HSH. The nanolubricant with ultrasonication offers excellent stability at 5 h of homogenizing time with a concentration ratio of more than 90% for up to 30 days of observation. In conclusion, ultrasonication homogenizing methods show better results than HSH with a zeta potential of more than 60 mV. In addition, HSH can be recommended as an optional method to produce nanolubricant with a low preparation time for immediate use.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: High-speed homogenizer; Nanofluid; nanolubricant; Polyvinyl ether; Preparation; Stability; TiO2; Ultrasonic; UV-Vis spectrophotometer; Zeta potential
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Faculty/Division: Institute of Postgraduate Studies
Faculty of Mechanical and Automotive Engineering Technology
Depositing User: Mr Muhamad Firdaus Janih@Jaini
Date Deposited: 04 Sep 2023 03:14
Last Modified: 04 Sep 2023 03:14
URI: http://umpir.ump.edu.my/id/eprint/37641
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