Journal
CHEMICAL PHYSICS LETTERS
Volume 531, Issue -, Pages 6-10Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2012.02.006
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Funding
- Swiss Confederation's Innovation Promotion Agency (CTI)
- Swiss National Science Foundation (SNF)
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Influence of reinforcements on mechanical and thermal properties of graphene nanoplatelets/epoxy composites is investigated. Amine functionalized expanded graphene nanoplatelets (EGNPs) were dispersed within epoxy resins using high-pressure processor followed by three roll milling. Functionality on the EGNPs was confirmed with FTIR and micro-Raman spectroscopy. Bending and nano-mechanical testing was performed on the composites. Incorporation of EGNPs improved the flexural modulus and hardness of the composite and increased fracture toughness by up to 60%. Marked improvement was observed in thermal conductivity of the composites reaching 36% at 2 wt.% loading. Functionalized EGNPs exhibited significant improvements indicating favorable interaction at EGNPs/polymer interface. (C) 2012 Elsevier B.V. All rights reserved.
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