Innovative method of metal coating of microcapsules containing phase change materials
Author | Al-Shannaq, Refat |
Author | Kurdi, Jamal |
Author | Al-Muhtaseb, Shaheen |
Author | Farid, Mohammed |
Available date | 2021-09-01T10:04:06Z |
Publication Date | 2016 |
Publication Name | Solar Energy |
Resource | Scopus |
Abstract | Microencapsulation of phase change materials (PCMs) is needed to prevent PCM leaking during melting. However, the low thermal conductivity of the microcapsules shell limits their applications. To enhance thermal conductivity of PCM microcapsules, a new method was developed for coating them with a metal using dopamine surface activation followed by electroless plating. The oxidative self-polymerization of dopamine (PDA) on the shell of the polymeric PCM microcapsules makes the surface active by providing chemisorption sites for metal deposition. Scanning electron microscope (SEM) images of the metal coated microcapsules without PDA pre-treatment did not show evidence of Ag metal on the surface of microcapsules. However, PCM microcapsules were completely covered with Ag metal when they were pre-treated with PDA as indicated by SEM and EDX tests. The enhancement in the thermal conductivity of silver coated PCM microcapsules of different size and for different silver coating coverage was investigated and discussed. This was confirmed by the enhancement in the performance of these silver-coated microcapsules using thermal cycling tests. 2016 Elsevier Ltd. |
Sponsor | This publication was made possible by the NPRP award [NPRP 5-093-2-034] from the Qatar National Research Fund (a member of The Qatar Foundation). The statements made herein are solely the responsibility of the authors. |
Language | en |
Publisher | Elsevier Ltd |
Subject | Amines Electroless plating Metal coatings Metals Neurophysiology Scanning electron microscopy Silver Thermal conductivity Chemisorption sites Dopamine Low thermal conductivity Microcapsules Self-polymerization Surface activation Thermal conductivity enhancement Thermal cycling test Phase change materials catalysis coating encapsulation hydrocarbon innovation metal phase transition polymer shell silver thermal conductivity |
Type | Article |
Pagination | 54-64 |
Volume Number | 129 |
Check access options
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
This item appears in the following Collection(s)
-
Chemical Engineering [1155 items ]