, Volume 71, Issue 12, pp 4562–4568 | Cite as

Synthesis of Micro-encapsulated Phase Change Materials Using Chain Transfer Agent via Emulsion Polymerization and Their Chemical, Optical, and Thermal Characterization

  • Ayeon Jang
  • Youngkyun Jung
  • Ung Su Choi
  • Jonghyun Kim
  • Jiyoung Chang
  • Sun ChoiEmail author
Functional Nanomaterials for Energy Applications


Microencapsulated phase change materials (MPCMs) are materials that store thermal energy, and emulsion polymerization is the preferred encapsulation method for their synthesis because it is economical and simple. In this work, we used the emulsion method to synthesize two different MPCMs, i.e., poly methyl methacrylate (PMMA) PCMs and PMMA-1-dodecanethiol (DDT) PCMs, by using 1-dodecanethiol as the chain transfer agent. To explore the effect of the chain transfer agent, the two MPCMs were characterized chemically, physically, and thermally by Fourier transform-infrared spectroscopy, optical microscopy, scanning electron microscopy, and differential scanning calorimetry. The analyses showed that 1-dodecanethiol promoted the uniform formation of spherical MPCMs by enhancing the stability of the oil–water interface of the emulsions. Also, 1-dodecanethiol was not included in the structures of the MPCMs, and it did not affect the thermal properties of the MPCMs, such as heat capacity and melting point, which demonstrated that the 1-dodecanethiol acted only as a surfactant.



This work was supported by the Korea Institute of Science and Technology (KIST) Institutional Program (Project No. 2E29700), the University of Utah’s Science Technology and Research Initiative’s (USTAR’s) shared facilities, and the Materials Research, Science, and Engineering Center (MRSEC) Program at the University of Utah of the NSF under Award No. DMR-1121252.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Environment, Health, and Welfare Research CenterKorea Institute of Science and TechnologySeoulRepublic of Korea
  2. 2.National Agenda Research DivisionKorea Institute of Science and TechnologySeoulRepublic of Korea
  3. 3.Division of Energy and Environment TechnologyKorea University of Science and Technology (UST)DaejeonRepublic of Korea
  4. 4.Department of Mechanical EngineeringUniversity of UtahSalt Lake CityUSA

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