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Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
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Heavily aluminated graphene nanoplatelets as an efficient flame-retardant

Author(s)
Jeon, In-YupShin, Sun-HeeChoi. Hyun-JungYu, Soo-YoungJung, Sun-MinBaek, Jong-Beom
Issued Date
2017-05
DOI
10.1016/j.carbon.2017.01.071
URI
https://scholarworks.unist.ac.kr/handle/201301/21547
Fulltext
http://www.sciencedirect.com/science/article/pii/S0008622317300817
Citation
CARBON, v.116, pp.77 - 83
Abstract
Substantial amounts of aluminum (Al), which is one of the most abundant elements and period III post-transition metals, can be incorporated into graphene nanoplatelets (GnPs) by ball-milling graphite in the presence of solid Al beads. After thoroughly etching away any unreacted Al residues, the structure and properties of the resultant aluminated GnPs (AlGnPs) were characterized using various analytical techniques including transmission electron microscopy (TEM) and time-of-flight secondary ion mass spectroscopy (TOF-SIMS). The results indicate that AlGnPs contain a considerable amount of Al (30.9 wt%, by TEM energy dispersive X-ray spectrum) and display good dispersibility in various solvents, including water. Next, composite films from aqueous AlGnP/poly(vinyl alcohol) (1/4, wt/wt) solutions were cast and tested for flame retardation. The results indicate that AlGnPs could serve as an outstanding flame retardant that operates by both chemical (condensation) and physical (cooling and blocking) mechanisms. This suggests that AlGnPs may provide a promising option for a new, cost-effective, eco-friendly, yet efficient flame retardant.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
ISSN
0008-6223
Keyword (Author)
AluminumGraphene nanoplateletsBall-millingFlame retardantPoly(vinyl alcohol)
Keyword
METAL-FREE ELECTROCATALYSTSOXYGEN REDUCTION REACTIONVINYL ACETATE COPOLYMERMAGNESIUM-HYDROXIDEMECHANICAL-PROPERTIESNANOCOMPOSITESGRAPHITESURFACEEVA

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