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- W2808611012 abstract "Abstract Salicylfluorone-based waterborne polyurethane (SAF-WPU) was synthesized by chemical bonding in the presence of reactive groups, using isophorone diisocyanate (IPDI), 1,4-butanediol (BDO) as the hard segment, polypropylene glycol(PPG) (Mn = 1000) as soft segment, dimethylolpropionic acid (DMPA) as hydrophilic monomer, and salicylfluorone(SAF) as a cross-linking agent. The structure and properties of SAF-WPU were studied by Fourier transform infrared spectra (FT-IR), UV visible spectroscopy (UV–vis), fluorescence spectra, differential scanning calorimetry (DSC), thermogravimetric analysis (TG) and X ray diffraction (XRD) and so on. The results showed that SAF was successfully introduced into the main chain of polyurethane. After the introduction of SAF, the heat resistance and crystallization ability of the film were improved obviously. Further study found that the addition of SAF endowed WPU with fluorescence properties, in a certain range of concentration, the fluorescence intensity increased with fluorophore concentration increased gradually, with a further increase of the fluorophore concentration, the fluorescence intensity decreased, SAF-WPU dispersion has concentration quenching effect. In addition, the fluorescence intensity of SAF-WPU dispersion decreased with increasing temperature of the system. The quenching effect of SAF-WPU was not obvious by using hydroquinone." @default.
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- W2808611012 date "2018-09-01" @default.
- W2808611012 modified "2023-09-24" @default.
- W2808611012 title "Synthesis, characterization and fluorescence performance of a novel SAF-based waterborne polyurethane" @default.
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- W2808611012 doi "https://doi.org/10.1016/j.porgcoat.2018.05.030" @default.
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