Authors De, B. ; Voit, B. ; Karak, N.
Title Transparent luminescent hyperbranched epoxy/carbon oxide dot nanocomposites with outstanding toughness ductility
Date 01.10.2013
Number 38549
Abstract A luminescent transparent hyperbranched epoxy nanocomposite with previously unachieved outstanding toughness and elasticity has been created by incorporation of a very small amount of carbon oxide nanodots. The nanocomposites of the hyperbranched epoxy with carbon oxide dots at different dose levels (0.1, 0.5, and 1.0 wt %) have been prepared by an ex situ solution technique followed by curing with poly(amido-amine) at 100 °C. Different characterizations and evaluations of mechanical and optical properties of the nanocomposites have been performed. The toughness (area under the stress–strain curve) of the pristine system has been improved dramatically by 750% with only 0.5 wt % carbon oxide dots. The tensile strength has been enhanced from 38 to 46 MPa, whereas the elongation at break improved noticeably from 15 to 45%. Excellent adhesive strength combined with transparency and photoluminescent behavior renders these materials highly interesting as functional films in optical devices like light-emitting diodes and UV light detection systems as well as in anticounterfeiting applications.
Publisher ACS Applied Materials & Interfaces
Citation ACS Applied Materials & Interfaces 5 (2013) 10027-10034
Tags hyperbranched epoxy resin carbon oxide dot nanocomposite toughness optical properties carbon dots epoxy-resin diglycidyl ether bisphenol-a polymer rubber green

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