Microencapsulated phase change material via Pickering emulsion stabilized by graphene oxide for photothermal conversion

In this study, Pickering suspension polymerization was used to synthesize thermally stable microencapsulated phase change materials (microPCMs) with n -eicosane as the PCM, polyurea (PUA) as the shell, and graphene oxide (GO) as the colloidal stabilizer. Accordingly, the GO-modified microPCMs (GO@PU...

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Bibliographic Details
Published in:Journal of materials science 2020-06, Vol.55 (18), p.7731-7742
Main Authors: Maithya, Onesmus Musyoki, Li, Xiang, Feng, Xueling, Sui, Xiaofeng, Wang, Bijia
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Electric power production
Energy harvesting
Energy Materials
Graphene
Graphite
Leakage
Materials Science
Phase change materials
Photothermal conversion
Polyamides
Polymer Sciences
Polymerization
Product development
Solar energy
Solid Mechanics
Suspension polymerization
Thermal energy
Thermal stability
Thermal storage
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Summary:In this study, Pickering suspension polymerization was used to synthesize thermally stable microencapsulated phase change materials (microPCMs) with n -eicosane as the PCM, polyurea (PUA) as the shell, and graphene oxide (GO) as the colloidal stabilizer. Accordingly, the GO-modified microPCMs (GO@PUAmPCM) prepared at different GO emulsion concentrations were investigated and compared. These microcapsules exhibited high thermal storage of about 70% (180 J/g), leakage prevention, and high solar harvesting capacity with efficient photothermal conversion efficiency (60%). GO@PUAmPCM also showed good thermal reliability, and no leakage was observed after 100 heating and cooling cycles. The process developed herein can be embraced to fabricate highly efficient and reliable PCM microcapsules for solar energy harvesting.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-020-04499-5