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Issue 113, 2015
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Paraffin confined in carbon nanotubes as nano-encapsulated phase change materials: experimental and molecular dynamics studies

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Abstract

The characteristics of paraffin confined in carbon nanotubes (CNTs) were investigated using experimental and molecular dynamics (MD) methods. Through a vacuum infiltration process, paraffin was successfully infiltrated into the inner space of CNTs, which was proven by TEM and DSC observations. The melting point and latent heat were both lower than the bulk. Furthermore, MD simulations were performed to provide insight into the structural distribution of paraffin confined in CNTs and to attempt to find an explanation of the experimental results. The MD simulation results indicated that paraffin molecules exhibited an orderly structural distribution near the inner wall of the CNTs, which gradually turned disorderly with increasing temperature. The self-diffusion coefficient compared with that of pure paraffin increased. These behaviors could be attributed to the nano-confined environment of the CNTs and the interaction between the paraffin molecules and the tube walls. The current research is significant for understanding the behaviors of alkane-based phase change materials inside CNTs, which could provide new applications of paraffin in microelectronics cooling.

Graphical abstract: Paraffin confined in carbon nanotubes as nano-encapsulated phase change materials: experimental and molecular dynamics studies

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Publication details

The article was received on 25 Aug 2015, accepted on 16 Oct 2015 and first published on 16 Oct 2015


Article type: Paper
DOI: 10.1039/C5RA17152K
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RSC Adv., 2015,5, 92812-92817

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    Paraffin confined in carbon nanotubes as nano-encapsulated phase change materials: experimental and molecular dynamics studies

    C. Nie, X. Tong, S. Wu, S. Gong and D. Peng, RSC Adv., 2015, 5, 92812
    DOI: 10.1039/C5RA17152K

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