Preparation and Characterization of Polystyrene Microcapsule Containing Phase Change Material by Volatile Exchange Impregnation

Sukhbaatar Batchuluun; Kentaro Yasui; Hideki Matsune; Koichiro Shiomori; Shiro Kiyoyama; Ochirkhuyag Bayanjargal

doi:10.1252/jcej.21we120

Materials Engineering and Interfacial Phenomena

Preparation and Characterization of Polystyrene Microcapsule Containing Phase Change Material by Volatile Exchange Impregnation

Sukhbaatar Batchuluun, Kentaro Yasui, Hideki Matsune, Koichiro Shiomori , Shiro Kiyoyama, Ochirkhuyag Bayanjargal

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Keywords: Polystyrene Microcapsules, Phase Change Material, Fractionation, Volatile Exchange Impregnation, Machine Learning Image Analysis

JOURNAL RESTRICTED ACCESS

2022 Volume 55 Issue 5 Pages 217-224

DOI https://doi.org/10.1252/jcej.21we120

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Abstract

Polystyrene microcapsules were prepared by using the solvent evaporation method from S/O/W emulsion which contains fine particles of CaCl₂ in the organic phase. The microcapsules were fractionated by their size and permeability of the wall using settling difference in methanol. Further, phase change materials that have two different wet-ability characters were successfully impregnated. The hydrophobic compound was easily impregnated to microcapsules which have hydrophobic wall material. Meanwhile, the hydrophilic compound, which is salt hydrate, was not impregnated to the same microcapsules via direct impregnation but the salt hydrate was successfully impregnated by the volatile exchange impregnation method. Simple thermal properties of the prepared phase change material microcapsules were examined by TGA and DSC methods.

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