Open AccessInvestigation of stability, dispersion, and thermal conductivity of functionalized multi-walled carbon nanotube based nanofluid
Author(s) -
Omar A. Hussein,
Khairul Habib,
Mohammad Shakir Nasif,
R. Saidur,
Ali Samer Muhsan
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/863/1/012012
Subject(s) - nanofluid , carbon nanotube , thermal conductivity , materials science , thermal stability , dispersion stability , dispersion (optics) , distilled water , fourier transform infrared spectroscopy , chemical engineering , composite material , conductivity , nanoparticle , nanotechnology , chromatography , chemistry , optics , physics , engineering
In the attempt of preparing multi-walled carbon nanotube (MWCNTs), covalent functionalisation (CF-MWCNTs) were applied. The stable thermal conductivity was measured as a function of temperature. A number of techniques, such as FTIR, FESEM and UV-vis spectrophotometer were employed to characterise both dispersion stability and morphology of functionalised materials. By using ultrasonic test time, the highest stability of nanofluids was achieved at 60 minutes. As a result, the thermal conductivity displayed by CF-MWCNTs was higher than distilled water. In conclusion, improvement in thermal conductivity and stability displayed by CF-MWCNTs was higher, while the best thermal conductivity improvement was recorded at 31%.