Iranian Researchers Create Smart Nanofiber with Thermal Performance

Sunday, February 18, 2018 - 11:20

Iranian researchers have succeeded to create smart nan-composites through adding metal oxide nanoparticles to polymer fibers which is able to save energy.

According to an ISCA report, researchers from Shiraz University investigated “Thermal performance of co-electrospun fatty acid nanofiber composites in the presence of nanoparticles” which can be a great step in the field of energy storage and transmission.

Based on the research, co-electrospinning of fatty acid eutectics in the presence of nanoparticles has been used to produce thermally conductive nanofiber composites with suitable phase-transition temperature range.

Capric acid (CA), palmitic acid (PA) and lauric acid (LA) and their eutectics were used as the phase change materials (PCMs) and polyethylene terephthalate (PET) was used as the supporting matrix. Four different nanoparticles (Al2O3, Fe2O3, SiO2 and ZnO) at different weight fractions were added to the fatty acid eutectic solutions which eventually appeared in the electrospun composites.

The structure, morphology, thermal properties and energy storage capacity of the prepared nanocomposite-enhanced phase change materials (NEPCMs) were examined by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC), respectively.

The average diameter of nanocomposite fibers was found to be significantly smaller than that of pure composite fibers due to the increased conductivity in spin dope associated with the presence of nanoparticles.

Also, the presence of nanoparticles has caused the phase transition temperature ranges (onset – offset) of the composite fibers to shift towards lower temperatures (e.g. lower melting point temperatures). The fabricated PCM composite have shown proper thermal conductivity, energy storage capacity and efficiency as well as phase transition temperature range all of which are necessary for low temperature energy storage/retrieval systems.

The research was carried out by Seyyed Iman Golestaneh from Shiraz University, Aziz Babapoor from University of Mohaghegh Ardabili, Gholamreza Karimi and Farshid Torabi, Faculty of Engineering and Applied Science of University of Regina and its result published in the journal of Applied Energy, Volume 212, 15 February 2018, Pages 552-564.

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