Synthesis and characterization of micro-nanoencapsulated n-eicosane with PMMA shell as novel phase change materials for thermal energy storage
This study focuses on preparation, characterization and thermal behavior of novel micro-nanoencapsulated phase change materials (PCMs) for thermal energy storage applications. The micro-nano capsules with n-eicosane as core and poly(methyl methacrylate) (PMMA) as shell with a weight ratio of 50/50 w...
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Veröffentlicht in: | Materials chemistry and physics 2018-08, Vol.215, p.299-304 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | This study focuses on preparation, characterization and thermal behavior of novel micro-nanoencapsulated phase change materials (PCMs) for thermal energy storage applications. The micro-nano capsules with n-eicosane as core and poly(methyl methacrylate) (PMMA) as shell with a weight ratio of 50/50 were prepared via the mini-emulsion polymerization process. The morphology of micro-nano capsules was evaluated by optical microscopy (OM), transmission electron microscopy (TEM) and the scanning electron microscopy (SEM). The micro-nano capsules are then characterized by Fourier transform infrared spectroscopy (FT-IR) which confirmed the accuracy of the synthesis. The thermal stability of the specimen was obtained by using the differential scanning calorimetry (DSC) and thermo-gravimetric analysis (TGA). The obtained results showed that the melting and freezing temperatures and the latent heats of n-eicosane/PMMA micro-nanocapsules are 34.66 °C and 32.92 °C, 124.7 J/g and −119.13 J/g, respectively. Moreover, TGA analysis represented the high thermal stability of the sample.
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•A novel micro-nanocapsules containing n-eicosane as core and PMMA as shell was synthesized.•The morphologies of micro-nanocapsules were investigated by SEM and TEM.•TG analysis represented the high thermal stability of micro-nanocapsules.•High latent heat of melting and freezing in comparison to similar works was observed. |
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ISSN: | 0254-0584 1879-3312 |
DOI: | 10.1016/j.matchemphys.2018.05.044 |