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Title: | Advanced fabrication and multifunctional properties of morphology-controlled graphene aerogels and their composites | Authors: | FAN ZENG | Keywords: | Graphene aerogels, nanocomposites, morphology-control, electrical properties, thermal conduction, mechanical properties | Issue Date: | 5-Feb-2015 | Citation: | FAN ZENG (2015-02-05). Advanced fabrication and multifunctional properties of morphology-controlled graphene aerogels and their composites. ScholarBank@NUS Repository. | Abstract: | For this research, a cost-effective method has been developed to synthesize self-assembled GAs from graphite at a low temperature range through modified Hummers? and chemical reduction methods using various reducing agents. The effects of synthesis conditions, reducing agents, thermal annealing and carbon nanotubes on the morphology, electrical and thermal properties of the as-prepared GAs are quantified comprehensively. For the first time, a comparative infrared microscopy technique has been successfully developed to measure the thermal conductivity of GAs. GA?poly (methyl methacrylate) (PMMA) nanocomposites are further developed by backfilling PMMA into the pores of the GAs. Due to uniform distribution of the graphene nanosheets in PMMA, the GA?PMMA nanocomposites exhibit significant enhancements of electrical conductivity, microhardness, and thermal conductivity over pure PMMA and the graphene?PMMA nanocomposites prepared by powdery dispersion methods. The developed GAs and GA?PMMA nanocomposites can be applied in aerospace, composite electrodes and energy storage devices. | URI: | http://scholarbank.nus.edu.sg/handle/10635/119833 |
Appears in Collections: | Ph.D Theses (Open) |
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File | Description | Size | Format | Access Settings | Version | |
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FAN ZENG Final Thesis Graphene Aerogels.pdf | 4.04 MB | Adobe PDF | OPEN | None | View/Download |
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