Journal
JOURNAL OF MATERIALS SCIENCE
Volume 47, Issue 3, Pages 1418-1426Publisher
SPRINGER
DOI: 10.1007/s10853-011-5922-9
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Funding
- Seoul RBD program [PA090933]
- National Research Foundation of Korea [핵06A1107] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Al(OH)(3) functionalized graphene composites (Al-GO) were prepared using a simple sol-gel method. In this protocol, graphene oxide (GO) was prepared according to the Hummers method and functionalized to enhance its reactivity with aluminum isopropoxide by a LiAlH4 treatment. The functionalized graphene sheets were characterized by X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy. These analyses confirmed that GO had been fabricated and the Al(OH)(3) layer could have a homogeneous distribution with large and dense coverage onto GO sheets. In addition, the thermal and electrical conductivity of the epoxy composites with GO and Al-GO fillers were measured. The thermal conductivities of the composites with graphene-based fillers were enhanced by the addition of fillers. In particular, the thermal conductivity of GO/epoxy composite containing 3 wt% was approximately two times higher than that of pure epoxy resin. In addition, the electrical conductivity of Al-GO embedded composites degenerated compared to GO composites.
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