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Adsorption

, Volume 24, Issue 4, pp 345–355 | Cite as

Confinement effect on enthalpy of fusion and melting point of organic phase change materials in cylindrical nanospace of mesoporous silica and carbon

  • Jihye Choi
  • Hirotaka Fujita
  • Masaru Ogura
  • Akiyoshi Sakoda
Article
  • 248 Downloads

Abstract

Organic phase change materials (PCMs) were successfully confined into mesopores of host materials independently via vapor transportation to precisely investigate the changes in the enthalpy of fusion and the melting point of such confined PCMs under various conditions. Paraffins, fatty acids, and fatty alcohols with long hydrocarbon chains were employed as guest PCMs. Mesoporous silica SBA-15s and soft-templated mesoporous carbons with cylindrical mesopores were employed as host materials of the guest PCMs. It was elucidated that mesopore diameter, functional groups of both PCMs and functional groups of host materials result in significant changes in the enthalpy of fusion and the melting point of confined PCMs. Furthermore, it was concluded that the host materials with mesopores of diameter 10–20 nm and minimum interaction between PCM molecules and the functional group on the wall of mesopores of host materials are required to obtain an enthalpy of fusion of confined PCMs as much as 50% of that in its bulk phase.

Keywords

Confinement effect Phase change material Enthalpy of fusion Melting point 

Notes

Acknowledgements

The authors would like to express sincere gratitude to Professor Ryo Shirakashi and research associate Kiyoshi Takano, IIS, the University of Tokyo, for their support in the experimental section of the DSC measurement.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Jihye Choi
    • 1
  • Hirotaka Fujita
    • 1
  • Masaru Ogura
    • 1
  • Akiyoshi Sakoda
    • 1
  1. 1.Institute of Industrial ScienceThe University of TokyoTokyoJapan

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