Edge-Selectively Functionalized Graphene-Like Platelets as a Co-curing Agent and a Nanoscale Additive to Epoxy Resin
Final rept. 4 Jan 2011-31 May 2012
ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY (KOREA SOUTH)
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A newly developed method for the edge-selective functionalization of pristine graphite with 4-aminobenzoic acid was applied for the synthesis of 4-aminobenzoyl-functionalized graphite AB-graphite through a direct Friedel-Crafts acylation in a polyphosphoric acid PPAphosphorous pentoxide medium P2O5. The AB moiety at the edge of the AB-graphite played the role of a molecular wedge to exfoliate the AB-graphite into individual graphene and graphene-like platelets upon dispersion in polar solvents. These were used as a co-curing agent and a nanoscale additive to epoxy resin. The physical properties of the resulting epoxyAB-graphite composites were improved because of the efficient load transfer between the additive and epoxy matrix through covalent links.
- Geology, Geochemistry and Mineralogy