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Nanomaterials 2018, 8(6), 385; https://doi.org/10.3390/nano8060385

High Performance Shape-Stabilized Phase Change Material with Nanoflower-Like Wrinkled Mesoporous Silica Encapsulating Polyethylene Glycol: Preparation and Thermal Properties

1
School of Port and Transportation Engineering, Zhejiang Ocean University, Zhoushan 316022, China
2
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
*
Authors to whom correspondence should be addressed.
Received: 3 May 2018 / Revised: 20 May 2018 / Accepted: 22 May 2018 / Published: 31 May 2018
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Abstract

Nanoflower-like wrinkled mesoporous silica (NFMS) was prepared for further application as the carrier of polyethylene glycol (PEG) to fabricate the new, shape-stabilized phase change composites (PEG/NFMS); NFMS could improve the loading content of PEG in the PEG/NFMS. To investigate the properties of PEG/NFMS, characterization approaches, such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Brunauer-Emmett-Teller (BET) analysis, and differential scanning calorimetry (DSC), were carried out. The characterization results illustrated that the PEG was completely adsorbed in the NFMS by physical adsorption, and the nanoflower-like wrinkled silica did not affect the crystal structure of PEG. As reported by the DSC test, although NFMS had a restriction influence on the activity of the PEG molecules, the melting and binding enthalpies of the PEG/NFMS could reach 136.6 J/g and 132.6 J/g, respectively. In addition, the TGA curves demonstrated that no evident weight loss was observed from 20 °C to 190 °C for the PEG/NFMS, and the results revealed that the PEG/NFMS had remarkable thermal stability. These results indicated that the NFMS is a potential carrier of organic phase change material for the preparation of shape-stabilized phase change composites. View Full-Text
Keywords: phase change materials; wrinkled mesoporous silica; polyethylene glycol; thermal energy storage phase change materials; wrinkled mesoporous silica; polyethylene glycol; thermal energy storage
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Gao, J.; Tao, W.; Chen, D.; Guo, X.; Chen, Y.; Jiang, Y. High Performance Shape-Stabilized Phase Change Material with Nanoflower-Like Wrinkled Mesoporous Silica Encapsulating Polyethylene Glycol: Preparation and Thermal Properties. Nanomaterials 2018, 8, 385.

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