Identification of photoluminescence features of an epoxy resin based on components features and curing effects

Gallot‐Lavallée, Olivier; Teyssèdre, G.; Laurent, Christian; Rowe, S.

doi:10.1016/j.polymer.2005.02.003

Cited by 25 publications

(28 citation statements)

References 12 publications

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“…40 nm centered, respectively, at 320 and 360 nm were observed for the neat matrix sample. These emission features were already reported in literature for DGEBA and partially attributed to bisphenol groups 50. In the present case, it was also observed in HDGE (Figure 5A‐a) cured systems, opening perspectives for new studies.…”

Section: Resultssupporting

confidence: 88%

Photoluminescent Epoxy/Gd₂O₃:Eu³⁺ UV‐cured Nanocomposites

Roppolo

Debasu

Ferreira

et al. 2012

Macro Materials & Eng

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UV‐cured photoluminescent coatings emitting in the visible spectral region are obtained by dispersing Gd2O3:4 mol% Eu3+ nanorods in three different commercially available photocurable epoxy resins. The effect of the concentration of the Gd2O3:4 mol% Eu3+ nanorods on the kinetics of the photocuring reaction is followed using real‐time FT‐IR. Thermal and the mechanical properties of the cured films are also investigated. Moreover, the effect of the matrix and nanorod concentration in the composites on the emission and excitation spectra and the 5D0(C2) decay time of Eu3+ is evaluated. The composite materials present original photoluminescence properties and demonstrate the potential of UV curing as a technique to develop smart photoactive coatings. magnified image

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Section: Resultssupporting

confidence: 88%

Photoluminescent Epoxy/Gd₂O₃:Eu³⁺ UV‐cured Nanocomposites

Roppolo

Debasu

Ferreira

et al. 2012

Macro Materials & Eng

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“…The spectrum, which is broad and structureless, peaks at 562 nm. This is the domain of the phosphorescence emission of the cured, resin as seen in photoluminescence experiments 5…”

Section: Resultsmentioning

confidence: 86%

Curing and post‐curing luminescence in an epoxy resin

Gallot‐Lavallée

Teyssèdre

Laurent

et al. 2006

J of Applied Polymer Sci

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A spontaneous luminescence is reported when epoxy resin samples are heated in air. This phenomenon is very sensitive to the nature of the atmosphere. The same treatment in nitrogen leads to an extinction of the luminescence. The emission process is restored when samples are kept for a sufficient time in air. To better understand this phenomenon, we have investigated the luminescence of the elementary constituents of the epoxy (resin and hardener), when heated in air and nitrogen, as well as during resin-curing in the same atmospheres. It appears that the emission process is linked with the presence of oxygen.Although the kinetics of the luminescence can differ, depending on the nature of the sample (cured resin, resin during curing, liquid components), the emission spectra are the same during resin-curing and upon heating of the cured resin and hardener. The emission spectrum of the base resin is different. It is concluded that the light results from a chemiluminescence process during oxidation.

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“…The photoluminescence features of the epoxy have been thoroughly studied by considering the PL of the base resin and hardener taken separately, of their mixture, and in the course of curing [10]. Most of the bands observed in the cured resin could be interpreted based on those found in the components taken separately.…”

Section: Epoxy Resinmentioning

confidence: 99%

Cathodo- and electro-luminescence spectra in insulating polymers: A parallel approach for inferring electrical ageing mechanisms

Teyssèdre

Franceschi

Laurent

2007

2007 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena

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Films of poly(ethylene naphthalate), polyethylene (either low density or cross-linked) and epoxy resins have been irradiated with electrons having kinetic energies of up to 10 keV, i.e. able to break bonds of the polymeric chains (featuring therefore hot electrons effects). The so-called cathodoluminescence spectrum has been acquired for different electron energies. With the various materials tested, we were able to reproduce the EL spectrum of these materials. These results allow to associate electroluminescence and electrical ageing in an implicit scheme, opening the way for defining safety limits in terms of electric stresses applied to a material for a given application.

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Identification of photoluminescence features of an epoxy resin based on components features and curing effects

Abstract: . Identification of photoluminescence features of an epoxy resin based on components features and curing effects. 2006.

Cited by 25 publications

References 12 publications

Photoluminescent Epoxy/Gd₂O₃:Eu³⁺ UV‐cured Nanocomposites

Photoluminescent Epoxy/Gd₂O₃:Eu³⁺ UV‐cured Nanocomposites

Curing and post‐curing luminescence in an epoxy resin

Cathodo- and electro-luminescence spectra in insulating polymers: A parallel approach for inferring electrical ageing mechanisms

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Identification of photoluminescence features of an epoxy resin based on components features and curing effects

Abstract: . Identification of photoluminescence features of an epoxy resin based on components features and curing effects. 2006.

Cited by 25 publications

References 12 publications

Photoluminescent Epoxy/Gd2O3:Eu3+ UV‐cured Nanocomposites

Photoluminescent Epoxy/Gd2O3:Eu3+ UV‐cured Nanocomposites

Curing and post‐curing luminescence in an epoxy resin

Cathodo- and electro-luminescence spectra in insulating polymers: A parallel approach for inferring electrical ageing mechanisms

Contact Info

Product

Resources

About

Photoluminescent Epoxy/Gd₂O₃:Eu³⁺ UV‐cured Nanocomposites

Photoluminescent Epoxy/Gd₂O₃:Eu³⁺ UV‐cured Nanocomposites