Strontium aluminate/polymer composites: Morphology,luminescent properties,and durability |
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| Authors: | S B Mishra A K Mishra N Revaprasadu K T Hillie W J vdM Steyn E Coetsee H C Swart |
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| Affiliation: | 1. Department of Physics, University of the Free State, Bloemfontein, ZA9300, Republic of South Africa;2. CSIR Built Environment, CSIR, Pretoria, ZA 0001, Republic of South Africa;3. Department of Chemistry, University of Zululand, Kwadlangezwa 3886, Republic of South Africa;4. National Centre for Nano‐Structured Materials, CSIR, Pretoria, ZA 0001, Republic of South Africa;5. Department of Civil Engineering, University of Pretoria, ZA 0001, Republic of South Africa |
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| Abstract: | Phosphor‐based polymer composites were prepared using a melt mixing and extrusion method. Morphology, luminescent properties, and Hamburg wheel test (HWT) of synthesized hybrid material were studied using various polymer matrices. The intensities of the luminescence of the strontium aluminates phosphors (SrAl2O4 : Eu,Dy and Sr4Al14O25 : Eu,Dy) were substantially changed when incorporated into structurally and chemically different organic matrices. HWTs were performed to evaluate the durability of the polymers against simulated wheel loads and the effect of these wheel loads on the luminosity of the polymers. The decay slopes of various polymer–phosphor composites suggests that the simulated wheel load of the Hamburg test did not have a profound effect on the luminosity as such but the duration of luminescence was found to be shorter for the polymer–phosphor hybrid after the Hamburg test. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 |
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| Keywords: | strontium aluminate composite morphology photoluminescence decay slopes Hamburg wheel test |
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