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用同轴静电纺丝制备了含有稀土铕配合物(Eu(TTA)3AA)的芯-壳结构的丁腈橡胶/聚乙烯吡咯烷酮(NBR/PVP)超细荧光纤维。考察了在外层PVP纺丝参数不变的情况下,改变芯层丁腈橡胶纺丝液的纺丝速度、Eu(TTA)3AA含量等对纤维形貌的影响。通过研究Eu(TTA)3AA-NBR/PVP同轴超细纤维中Eu(TTA)3AA微观结构、含量与纤维的荧光性能之间的关系,发现在同轴纤维形成过程中由于溶剂的快速挥发可使Eu(TTA)3AA形成无定形结构,进而在纤维中形成分子簇级别的分散,在Eu(TTA)3AA含量为30%时,同轴纤维比Eu(TTA)3AA粉末的荧光强度提高了2倍。
The core-shell structure NBR / PVP superfine fluorescent fibers containing rare earth europium complex (Eu (TTA) 3AA) were prepared by coaxial electrospinning. The influence of spinning speed, Eu (TTA) 3AA content and so on on the morphology of the fibers was investigated under the same PVP spinning parameters. By studying the relationship between the microstructure of Eu (TTA) 3AA and the fluorescence properties of Eu (TTA) 3AA-NBR / PVP coaxial ultrafine fibers, it was found that due to the rapid volatilization of the solvent during the formation of coaxial fibers, Eu (TTA) 3AA forms an amorphous structure, and then forms a cluster-level dispersion in the fiber. When the Eu (TTA) 3AA content is 30%, the fluorescence intensity of the coaxial fiber Eu (TTA) 3AA powder increases by 2 Times