Abstract

The development of a water-free dyeing process for synthetic fabrics is of great importance for the textile industry due to environmental and economic reasons. In this study, a series of novel 3-(3-chlorophenyl)-l-phenyl-4-(diazenyl derivatives)-lH-pyrazol-5-amine dyes were specifically synthesized for use with supercritical carbon dioxide. The new dyes were characterized by MS, IR, and NMR spectral data, and the results were found to be in good agreement with the proposed structures. The new dyestuffs were applied to dye polyester and nylon 6 fabrics under supercritical carbon dioxide and aqueous media. The color uptake expressed through the color strength (K/S) was assessed, and the values obtained showed that the dyeing of polyester and nylon 6 fabrics using the scCO₂ method was significantly better than that using the aqueous method. The fastness properties of all the dyed fabrics were evaluated and exhibited excellent results. Raman micro spectroscopy indicated conclusively that the dye absorbance took place through all layers of the fabrics. Elimination of water and its costly processing can now be achieved in the dyeing of synthetic fabrics.

中文翻译：

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超临界二氧化碳下新型吡唑分散染料对PET和Nylon 6织物的绿色方法及其水类似物

抽象的

由于环境和经济原因，开发用于合成织物的无水染色方法对于纺织工业非常重要。在这项研究中，专门合成了一系列新型的3-（3-氯苯基）-1-苯基-4-（二氮烯基衍生物）-1H-吡唑-5-胺染料，用于超临界二氧化碳。通过MS，IR和NMR光谱数据对新染料进行了表征，结果与拟议的结构非常吻合。新型染料被用于在超临界二氧化碳和水性介质下对聚酯和尼龙6织物进行染色。评估通过色强度（K / S）表示的色吸收，所得值表明使用scCO ₂对聚酯和尼龙6织物进行染色该方法明显优于使用水性方法的方法。评价所有染色织物的牢度性能，并显示出极好的结果。拉曼光谱法明确地表明，染料吸收发生在织物的所有层上。现在，可以在合成织物的染色过程中消除水并进行昂贵的处理。