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首页> 外文期刊>Journal of Materials Science >Synthesis of cross-linked polyurethane elastomers with fluorescein linkages
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Synthesis of cross-linked polyurethane elastomers with fluorescein linkages

机译：具有荧光素键的交联聚氨酯弹性体的合成

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摘要

The reaction of polyurethane prepolymers with fluorescein (free acid) and glycerin or castor oil-cross-linker has been performed in N,N-dimethylformamide and in such way a cross-linked elastomer material has been obtained. Polyurethane prepolymers were prepared by reaction of the poly(1,4-butane) diols (Terathane 1400) with aliphatic 1,6 hexamethylene diisocyanate. The above polymerization reactions lead to the formation of novel aromatic-aliphatic polyurethane elastomers having fluorescein moieties in the main chain. The resulting novel cross-linked polyurethanes have excellent mechanical properties, especially in the castor oil polyurethane elastomer formulations and show light-violet fluorescence property and could be used as photoactive polymers for labeling materials. These polyurethanes were characterized through IR, TGA, DSC, and mechanical analyses. Some aspects of the fluorescent emission in fluorescein-polyurethane elastomers were studied.
机译：聚氨酯预聚物与荧光素（游离酸）和甘油或蓖麻油交联剂的反应已在N，N-二甲基甲酰胺中进行，并以此方式获得了交联的弹性体材料。通过使聚（1,4-丁烷）二醇（Terathane 1400）与脂肪族1,6六亚甲基二异氰酸酯反应制备聚氨酯预聚物。上述聚合反应导致形成在主链中具有荧光素部分的新型芳族-脂族聚氨酯弹性体。所得的新型交联聚氨酯具有优异的机械性能，特别是在蓖麻油聚氨酯弹性体配方中，并显示出浅紫色荧光性能，可以用作标签材料的光敏聚合物。这些聚氨酯通过IR，TGA，DSC和机械分析进行了表征。研究了荧光素-聚氨酯弹性体中荧光发射的某些方面。

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