Containing Rare Earth Optical Fiber Composite Materials Synthesis And Performance Research

Fluorescent polymer materials has been extensively studied because of its strong luminescence of rare earth ions, with high color purity and the excellent molding processing performance of polymer materials etc. And electrospinning, as a easy and convenient method of fibers preparation, it was an international research focus in recent years. Fluorescent polymer fiber with excellent performance and useful can be got via the complex especially the co-polymerization of rare earth and functional particles.In this paper, the trichromatic fluorescent of rare earth organic complexes were perfect and the rare earth fluorescent polymer preparation were optimization, then the fluorescent polymer materials with practical value were prepared. Specific contents are as following:Firstly, synthesis and properties of rare earth complexes.A series of dysprosium complexes were prepared by co-precipitation method (Dy2O3set as raw materials, a-methyl methacrylate, acetylacetone and phenylformic acid set as the first ligand,1,10-phenanthroline set as the secongd ligand, water set as the solvent). As the same, europium complexe were made (Eu2O3as raw materials, a-methyl methacrylate as the first ligand,1,10-phenanthroline as the second ligand. Using infrared absorption spectroscopy (IR) and UV absorption spectra (UV) to make certain the composition and structure, X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) to investigate the crystallization properties, simultaneous thermal analyzer (STA) to study the thermal stability of complexes and fluorescence spectrophotometer to test the photoluminescence of the complexes in different states and test environments.Secondly, synthesis and characterization of fluorescent polymer microspheres containing Eu3+A series of PMMA-co-Eu(MAA)3phen light-emitting microspheres with good dispersivity were made by dispersion polymerization from luminescent complexes which having high luminous intensity and polymerization activity. The microspheres were characteried by using IR, UV, XRD, and TEM.Thirdly, the studied on the synthesis and properties of fluorescence polymer fiber that contained Eu3+The optimal condition was electrostatic spinning, after the technology exploring. The spinning solvent was the mixed solvents containing DMF and THF, solute was spectively copolymer microspheres and the blending of rare earths complexes and PMMA. The results showed that copolymers were characterized by IR and SEM. Testing the fluorescence performance of copolymers and Blends, and discussing on the relationship between the contents of complexes and the fluorescence intensity of polymer blends and copolymers.The results showed that copolymer was formed through covalent bond, and rare earth ions distributed uniformly. With the increasing Content of Eu3+, the fluorescence intensity increased gradually. When the content reached20%the phenomenon of "concentration quenching" was not appear. The best content of blend spining was12%. When the content exceeding12%, the surface has particle and was rough. If the content of Eu3+keeps increasing, fiber broke a lot and unfavorable for spinning. When the Rare earth complexe content was lower than12%, fluorescence intensity increased with the increase of rare earth co mplexe, but when the complexes content exceeding12%, fluorescence intensity declined with the increase of rare earth complexes, and appear "concentration quenching" in the meantime. The surface of all the copolymer fiber that could reach microns level was smooth, which showed that Eu(MAA)3phen and MMA could well generated into fiber.