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Preparation, thermal property, and thermal stability of microencapsulated n-octadecane with poly(stearyl methacrylate) as shell.

Authors :
Qiu, Xiaolin
Lu, Lixin
Zhang, Zhixiong
Tang, Guoyi
Song, Guolin
Source :
Journal of Thermal Analysis & Calorimetry. Dec2014, Vol. 118 Issue 3, p1441-1449. 9p.
Publication Year :
2014

Abstract

This study focused on preparation and thermal properties of poly(stearyl methacrylate) shell (PSMA) microcapsules containing n-octadecane as a phase change material (PCM). Pentaerythritol triacrylate (PETA) and divinylbenzene (DVB) were employed as crosslinking agents. The surface morphologies, particle sizes, and distributions of the microencapsulated phase change material (microPCM) were studied by scanning electron microscopy. The thermal properties, thermal reliabilities, and thermal stabilities of the microPCMs were investigated by differential scanning calorimetry and thermal gravimetric analysis. The microPCM with DVB exhibits higher phase change enthalpies of melting (87.9 J g) and crystallization (94.8 J g) and a greater thermal stability in comparison with the microPCM with PETA. The phase change temperatures and enthalpies of the microPCMs varied little after thermal cycles. Thermal images showed that the gypsum board with PSMA/ n-octadecane microPCM possessed temperature-regulated property. Therefore, microencapsulated n-octadecane with PSMA as shell has good thermal energy storage and thermal regulation potential. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
13886150
Volume :
118
Issue :
3
Database :
Academic Search Index
Journal :
Journal of Thermal Analysis & Calorimetry
Publication Type :
Academic Journal
Accession number :
99256673
Full Text :
https://doi.org/10.1007/s10973-014-4040-8