Abstract
A ternary complex of Tb(SSA)3Phen was synthesised based on terbium(III) (Tb3+) ion and the ligands including 1,10-phenanthroline (Phen) and 5-sulfosalicylic acid (SSA). Then a series of polylactic acid (PLA)/Tb(SSA)3Phen composites were prepared by the melt-mixing process. The luminescent properties of PLA/Tb(SSA)3Phen composite films were investigated by fluorescence spectrophotometry. The spectra of all composites indicated that PLA/Tb(SSA)3Phen composites shown the characteristic bright green fluorescence which originated from Tb(SSA)3Phen. Moreover, the energy absorption and transfers of Tb(SSA)3Phen were slightly affected by the PLA matrix. The optical transmittance of the composites was measured by the UV–vis spectrometer. The results demonstrated that Tb(SSA)3Phen can ameliorate the PLA film transparence, which well dispersed in the PLA matrix. Moreover, the thermal properties, crystal structure and the mechanical properties of PLA/Tb(SSA)3Phen composite were also investigated to determine the potential usage as a green fluorescent material.
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