ANALISIS SIFAT TERMOFISIK DAN STABILITAS NANOFLUIDA TiO2 – CuO / AQUADES DENGAN PENAMBAHAN SURFAKTAN CETYL TRIMETHYLAMMONIUM BROMIDE (CTAB)

SEPTIAWAN, MUHAMMAD ALIF and Barlin, Barlin (2024) ANALISIS SIFAT TERMOFISIK DAN STABILITAS NANOFLUIDA TiO2 – CuO / AQUADES DENGAN PENAMBAHAN SURFAKTAN CETYL TRIMETHYLAMMONIUM BROMIDE (CTAB). Undergraduate thesis, Sriwijaya University.

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Abstract

Nanofluid is a suspension containing nanoparticles or a fluid with nanoparticles dispersed in it. The addition of surfactants to nanofluids aims to increase the dispersion properties of particles by reducing the surface tension of the liquid. The nanofluid preparation process is an important role in this research to obtain accurate results. Nanofluid preparation in this study used a two-step method which included various parameters such as nanoparticle ratio, volume fraction, stirring time, ultrasonic time, and concentration of added surfactant. In this research, the authors varied two parameters, including the surfactant concentration and the nanoparticle mixture ratio, where each parameter used 3 levels. In surfactant concentration, the 3 levels used are 0.1%, 0.3%, 0.5%. In the mixture the ratio of nanoparticles is 0.75 TiO2 – 0.25 CuO, 0.5 TiO2 – 0.5 CuO, 0.25 TiO2 – 0.75 CuO. The nanofluid preparation process begins with calculating and weighing the mass of each nanoparticle and surfactant, then mixing the TiO2 and CuO nanoparticles into the base fluid, namely Aquades, then adding the CTAB surfactant. Next, stirring was carried out using a magnetic stirrer and continued with ultrasonics which aims to break up the agglomeration. Then an evaluation of the stability of 12 prepared nanofluid samples was carried out, 9 of which were samples with CTAB surfactant added. The test method used in this research to test stability is sedimentation photos. Next, thermophysical properties testing was carried out including density testing to find the density value of the nanofluid using a densitometer. After that, viscosity testing was also carried out using a viscometer. Next, the results of the density and viscosity test data were processed into graphs and tables to see the comparison of surfactant with added surfactant concentration and nanofluids without added surfactant. Test results show that the addition of CTAB can improve the stability and thermophysical properties of nanofluids, especially at higher surfactant concentrations. The data shows that nanofluid with a CTAB concentration of 0.5% and a mixture of 0.25 TiO2 - 0.75 CuO nanoparticle ratio shows the highest density and viscosity. In addition, the sedimentation test showed an increase in dispersion stability over one month.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	TiO2-CuO, Nanofluida Hibrida, CTAB
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ170-179 Mechanics applied to machinery. Dynamics T Technology > TP Chemical technology > TP1080-1185 Polymers and polymer manufacture > TP1180.P67.A38 Polyolefins. Nanocomposites (Materials) Fillers (Materials) TECHNOLOGY & ENGINEERING / Material Science TECHNOLOGY & ENGINEERING / Textiles & Polymers
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Muhammad Alif Septiawan
Date Deposited:	13 Jan 2025 01:47
Last Modified:	13 Jan 2025 01:47
URI:	http://repository.unsri.ac.id/id/eprint/163857

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