Preparation and characterization of magnetic phase-change microcapsules

Magnetic microcapsules containing paraffin cores within urea-formaldehyde shells were fabricated utilizing in situ polymerization, with iron nano-particles as magnetic particles. The thermal properties, surface morphologies, magnetic properties and iron nano-particles content of the magnetic phasech...

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Bibliographic Details
Published inChinese science bulletin Vol. 54; no. 2; pp. 318 - 323
Main Authors Huang, Yong, Xuan, YiMin, Li, Qiang, Che, JianFei
Format Journal Article
LanguageEnglish
Published Heidelberg SP Science in China Press 2009
Subjects
Articles/Thermophysics
Chemistry/Food Science
Earth Sciences
Engineering
Humanities and Social Sciences
Life Sciences
multidisciplinary
Physics
Science
Science (multidisciplinary)
magnetism
microcapsules
latent functionally thermal fluid
phase change material
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Summary:Magnetic microcapsules containing paraffin cores within urea-formaldehyde shells were fabricated utilizing in situ polymerization, with iron nano-particles as magnetic particles. The thermal properties, surface morphologies, magnetic properties and iron nano-particles content of the magnetic phasechange microcapsules were investigated by scanning electronic microscopy (SEM), differential scanning calorimetry (DSC), vibrating sample magnetometry (VSM) and inductively coupled plasma quantometry (ICP). The influence of iron nano-particles on morphologies was also considered. The results indicate that the melting point of magnetic phase-change microcapsules is almost identical to that of paraffin. The magnetism parameters such as specific saturation magnetization and residual magnetization of magnetic phase-change microcapsules increase with the increase of iron nano-particles content.
ISSN:1001-6538
2095-9273
1861-9541
2095-9281
DOI:10.1007/s11434-008-0583-z