Study on PP grafted with ULP containing rare earth

In this work, an improved approach for preparing the photoluminescence films was developed, in which the chemical or covalent bonding between unsaturated linear polyester (ULP) containing rare earth complex (Eu–ULP) and polymer was introduced through a melt-grafting polymerization. Eu–ULP was grafted onto polypropylene (PP) in melt phase to render the resin fluorescence-active. The grafted PP was systematically characterized using various analytic tools including TG, IR DSC, WAXS and fluorescence. The results indicated that Eu–ULP was successfully grafted to the polypropylene backbone. The findings from DSC and WAXS measurements revealed that Eu–ULP acted as a nucleating agent, increasing the crystallization rate effectively and destroying the integrity of crystallinity as well.