Abstract
AbstractLuminescent poly(vinyl chloride) (PVC) plastics filling with long afterglow phosphor (SrAl2O4: Eu2+, Dy3+) were prepared via melt blending. To improve the dispersion degree of the phosphor particles and endow the compatibility with PVC matrix, SrAl2O4: Eu2+, Dy3+ was first grafted with poly(butyl acrylate)‐poly(methyl methacrylate) (core‐shell) (designed as PMMA(PBA)) by in situ emulsion polymerization. The properties of polymer/phosphor composite particles were characterized by fourier transform infrared, X‐ray photoelectron spectroscopy, and thermogravimetric analysis. The results show that the polymer had grafted onto the phosphor by chemical bond and the grating ratio was about 6.3%. The results for PVC plastics characterized by scanning electron microscopy show that the interfacial adhesion was enhanced with filling the polymer/phosphor composite particles and the compatibility of phosphor with PVC matrix was improved by coating with PMMA(PBA). And the luminescent PVC plastics filled with PMMA(PBA)/phosphor composite particles show improved mechanical properties and higher phosphorescence when the filling content was more than 3 phr compared with the unmodified phosphor. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
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