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Paraffin/CuO nanocomposites as phase change materials: Effect of surface modification of CuO
Author(s) -
Noori Mohammad M.,
Khonakdar Hossein Ali,
Azizi Hamed,
Ghaffari Mehdi,
Arjmand Mohammad,
Jafari Seyed H.
Publication year - 2019
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25298
Subject(s) - materials science , thermogravimetric analysis , differential scanning calorimetry , nanoparticle , nanocomposite , dispersion (optics) , thermal conductivity , silane , composite material , copper oxide , chemical engineering , fourier transform infrared spectroscopy , liquid paraffin , surface modification , copper , nanotechnology , metallurgy , engineering , physics , optics , thermodynamics
Abstract In this research, different loadings of copper oxide (CuO) nanoparticles (0.5, 1 and 3 wt%) were utilized to fortify the thermal conductivity of paraffin. In order to improve dispersion and inhibit nanofiller agglomeration, the surface of CuO nanoparticles was treated with trimethoxy octadecyl silane. Surface treatment of CuO nanoparticles was validated by Fourier transform infrared spectroscopy and thermogravimetric analysis. The scanning electron microscopy results revealed that the samples loaded with the surface treated CuO had proper dispersion, even up to 3 wt% of loading. Rheological results showed that CuO inclusion and particularly its treatment increased the viscosity of paraffin. Differential scanning calorimetry results exhibited that latent heat of pure paraffin slightly diminished by inclusion of untreated CuO nanoparticles, while inclusion of the treated nanoparticles led to less reduction in latent heat of paraffin. The thermal conductivity (KD2 test) results revealed that CuO inclusion, particularly the treated CuO, increased the thermal conductivity of paraffin over 2‐fold. All in all, this research study corroborates the potential of the treated CuO nanoparticles to produce paraffin‐based composite phase change materials with improved performance.