Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 20, Pages 10027-10034Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am402415g
Keywords
hyperbranched epoxy resin; carbon oxide dot; nanocomposite; toughness; optical properties
Funding
- SAP (UGC), India [F.3-30/2009]
- (DST), India [SR/FST/CSI-203/209/1]
- NRB [DNRD/05/4003/NRB/251]
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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 degrees 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.
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