A photochromic waterborne polyurethane-based dye with chemically fixed azobenzene groups

Hu, Xianhai; Liu, Xiang; Liu, Manli; Li, Gen; Cheng, Congliang

doi:10.1007/s00289-018-2552-2

Cited by 16 publications

(15 citation statements)

References 28 publications

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“…As a multi-functional environmental protection material, waterborne polyurethane-based fluorescent dye has attracted great attention. [13][14][15][16][17][18] Pilehkouhi M et al [19] prepared a waterborne polyurethane-based fluorescent dye by anchoring the fluorescent dye to the polyurethane chain. It was found that the fluorescence intensity was significantly enhanced by ultraviolet light, and the fluorescence intensity increased with increasing temperature.…”

Section: Introductionmentioning

confidence: 99%

A Waterborne Polyurethane‐Based Dye with Green Fluorescence Excited by Visible Light

Xian

et al. 2021

ChemistrySelect

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A waterborne aminofluorescein polyurethane-based dye (AF-WPU) with green fluorescence excited by visible light was synthesized by anchoring aminofluorescein (AF) to waterborne polyurethane chains. The structural characteristics of AF-WPU was confirmed by means of 1 H-NMR, FT-IR and UV-vis absorption. Compared with AF, there is a hypsochromic shift, and a new absorption peak generating in the UV-vis spectra of AF-WPU. Meanwhile, AF-WPU emited excellent fluorescence.The fluorescence intensity of AF-WPU increased five times at the same concentration. It is found that the fluorescence intensities of AF-WPU decreaseed with increased temperature, and increased first and then decreased with increasing concentration. The fluorescence of AF-WPU is very stable and insensitive to quenching agents. Moreover, AF-WPU which excited by visible light is less phototoxic to health, and has a broad prospect in practical applications.

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Section: Introductionmentioning

confidence: 99%

A Waterborne Polyurethane‐Based Dye with Green Fluorescence Excited by Visible Light

Xian

et al. 2021

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“…The crease recovery angle of dyed polyester fibers by DB60‐SWPU4 was tested, as shown in Figure . Generally, regardless of the warp or weft, the crease recovery angle of dyed fibers by small‐molecule dyes is generally below 90° …”

Section: Resultsmentioning

confidence: 99%

Waterborne polyurethane‐based dye with covalently bonded to Disperse blue 60

Xian

et al. 2019

J of Applied Polymer Sci

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A series of sulfonated waterborne polyurethane-based dyes (DB60-SWPUs) with covalently bonded to different proportions of Disperse blue 60 (DB60) were prepared by a modified acetone process. The expected structures of DB60-SWPUs are characterized by Fourier transform infrared spectroscopy and 1 H-NMR spectra. The obtained DB60-SWPUs show high viscosity and intriguing storage stability. The fluorescent performances, thermal properties, and mechanical properties of DB60-SWPUs were characterized. Compared with DB60, the UV-vis spectra of DB60-WPUs have obvious hypochromic shift, and the fluorescence intensities are obviously enhanced. The migration rates of DB60-SWPUs are much lower than that of DB60. DB60-SWPUs have thermal migration resistance and excellent color fastness. The polyester fiber dyed by DB60-SWPUs has not only high color yield, good fracture strength, excellent breaking strength retention, but also good permeability and wrinkle resistance. Moreover, DB60-SWPUs are polymeric dyes with water as a solvent, which are especially suitable for environmental protection.

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“…Moreover, the typical absorption peaks at 3334, 1706, and 1245 cm −1 are related to the stretching vibrations of N–H, C=O, and C–O in the urethane group, 5 which can be observed in the spectra of WPU and ABWPU. The above‐mentioned results suggested the successful synthesis of polyurethane‐based polymeric dye 17,18 . Furthermore, comparing the FTIR spectra of GO, ABWPU and GO‐ABWPU‐5, the introduction of GO did not indicate a new characteristic absorption peak in the GO‐ABWPU‐5 spectrum, suggesting that the addition of GO introduced no new functional groups onto ABWPU and the modification of ABWPU by GO was mainly physical blending.…”

Section: Resultsmentioning

confidence: 83%

Graphene oxide modified waterborne polyurethane‐based dye with high color‐fastness performance

Guo

Liu

Ding

et al. 2020

J of Applied Polymer Sci

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Graphene oxide (GO) was incorporated into waterborne polyurethane‐based polymeric dyes to prepare GO modified polymeric dyes for further improving the performances of waterborne polyurethane‐based dyes. Structure properties of the prepared polymeric dyes were analyzed using FTIR and UV–Vis spectrophotometers. The fastnesses to dry‐wet rubbing, thermal migration, light, and the mechanical properties of the GO modified polymeric dye films were further investigated. The introduction of GO might lower the tensile strength and the elongation at break of polymeric dye films. Meanwhile, the color of modified polymeric dye films turned to be darker as the GO dosage increased. Moreover, most of the above‐mentioned properties could be enhanced considerably. In particular, the dry‐wet rubbing and thermal migration fastness of modified polymeric dye films could be enhanced up to grade 5. This suggests that the GO modified waterborne polyurethane‐based dye has the potential to be used in leather finishing coloring with high performance.

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A photochromic waterborne polyurethane-based dye with chemically fixed azobenzene groups

Cited by 16 publications

References 28 publications

A Waterborne Polyurethane‐Based Dye with Green Fluorescence Excited by Visible Light

A Waterborne Polyurethane‐Based Dye with Green Fluorescence Excited by Visible Light

Waterborne polyurethane‐based dye with covalently bonded to Disperse blue 60

Graphene oxide modified waterborne polyurethane‐based dye with high color‐fastness performance

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