Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 118, Issue 3, Pages 1441-1449Publisher
SPRINGER
DOI: 10.1007/s10973-014-4040-8
Keywords
Phase change material; Microencapsulation; Thermal properties; Stearyl methacrylate; Energy storage; Thermal regulation
Funding
- Independent Research Project in Jiangnan University [JUSRP11453]
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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(-1)) and crystallization (94.8 J g(-1)) 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.
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