Abstract
ABSTRACTNew 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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