Preparation and evaluation of a stable nanoalumina-paraffin composite: Melting rate investigation using image analysis |
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| Authors: | Moloud Nourani Nasser Hamdami Javad Keramat |
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| Affiliation: | 1. Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan, Iran;2. Center of Excellence in Food Safety and Quality, Isfahan University of Technology, Isfahan, Iran |
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| Abstract: | New kinds of nanocomposite phase change materials (PCMs) were prepared using various surfactants and surface modification to improve the dispersion of nanoalumina in paraffin. The results showed that only sodium stearoyl lactylate (SSL), could stabilize nanoAl2O3 in paraffin. The mechanism of the effect of SSL on the stability of prepared PCMs is discussed. Image analysis showed that addition of nanoparticles has a significant effect on the nanocomposites melting rate, and compared to the pure paraffin, an increasing of 6, 10, 16 and 29% were observed in melting rates of naocomposites composed of 2.5, 5.0, 7.5 and 10.0?wt.% nanoalumina, respectively. |
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| Keywords: | Melting rate nanoAl2O3 paraffin sodium stearoyl lactylate stability |
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