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Author

Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

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Epoxy/Amine-Functionalized Short-Length Vapor-Grown Carbon Nanofiber Composites

Cited 9 times inthomson ciCited 9 times inthomson ci
Title
Epoxy/Amine-Functionalized Short-Length Vapor-Grown Carbon Nanofiber Composites
Author
Ahn, Soo-NaLee, Hwa-JeongKim, Bang-JunTan, Loon-SengBaek, Jong-Beom
Keywords
Additives; Composites; Epoxy; Functionalization; Nanotechnology; Resins; Vapor-grown carbon nanofibers
Issue Date
200811
Publisher
WILEY-BLACKWELL
Citation
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.46, no.22, pp.7473 - 7482
Abstract
Short length vapor-grown carbon nanofibers (VGCNPs) were functionalized with 4-aminobenzoic acid in polyphosphoric acid/phosphorous phentoxide medium via "direct" Friedel-Crafts acylation reaction to afford aminobenzoyl-functionalized VGCNFs (AR-VGCNFs). The AR-VGCNFs as a cocuring agent were mixed with epoxy resin by simple mechanical stirring in methanol which was added to help efficient mixing. After evaporation of methanol, 4,4′-methylenedianiline as a curing agent was added to the mixture, which was then cured at elevated temperatures. The resultant composites displayed uniform dispersion of AF-VGCNFs into cured epoxy matrix. During curing process, the amine functionalities on AF-VGCNF together with 4,4′- methylenedianiline were expected to be involved in covalent attachment to the epoxy resin. As a result, both tensile modulus and strength of the composites were improved when compared with those of pure epoxy resin. Thus, the AFVGCNFs play a role as an outstanding functional additive, which could resolve both dispersion and interfacial adhesion issues at the same time by functionalization of VGCNFs and covalent bonding between the additive and matrix, respectively.
URI
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DOI
http://dx.doi.org/10.1002/pola.23052
ISSN
0887-624X
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