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

Title
Synthesis of Micro-encapsulated Phase Change Materials Using Chain Transfer Agent via Emulsion Polymerization and Their Chemical, Optical, and Thermal Characterization
Authors
최웅수최선정영균장아연김종현장지영
Issue Date
2019-12
Publisher
JOM : the journal of the Minerals, Metals & Materials Society.
Citation
VOL 71, NO 12-4568
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/69954
ISSN
1047-4838
Appears in Collections:
KIST Publication > Article
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