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Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
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Materiale Plastice (Mater. Plast.), Year 2010, Volume 47, Issue 3,





CORNELIU SERGIU STAN, DOINA SIBIESCU, MARIUS SEBASTIAN SECULA, IOAN ROSCA, IGOR CRETESCU Phosphorescent Composites Based on Polyethyleneterephtalate


Abstract:
Photoluminescent composite of poly-ethyleneterephtalate-SrAl2O4: EU2+, Dy3+ was prepared by of a new procedure based on mixing the constituents in specific solvents for PET. In a first step it was studied the possibility of preparing europium and dysprosium doped strontium aluminate using a method that allows obtaining crystals in nanometric range compatible with polymer matrix. Also, the dependence of transparency in UV-VIS range of the polymer matrix density and experimental paths for obtaining a low crystallinity of PET at co-precipitation from solution were investigated. Characteristics of absorption / photonic emissions, phosphorescent decay time were investigated for europium/dysprosium doped strontium aluminate, and respectively for the composite prepared. The prepared photoluminescent composite presents a series of applications in optoelectronics, highway/ railway and utilitarian signaletics. Keywords: long persistence phosphorescent compounds, phosphorescent composites, polymer matrix, polyethyleneterphtalate



Issue: 2010 Volume 47, Issue 3
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