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首页> 外文期刊>Molecules >Combinative Scouring, Bleaching, and Cationization Pretreatment of Greige Knitted Cotton Fabrics for Facilely Achieving Salt-Free Reactive Dyeing
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Combinative Scouring, Bleaching, and Cationization Pretreatment of Greige Knitted Cotton Fabrics for Facilely Achieving Salt-Free Reactive Dyeing

机译：Greige的组合冲洗，漂白和阳离子化预处理棉织物，用于易于实现无盐活性染色

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摘要

In order to facilely achieve pretreatment and salt-free dyeing of greige knitted cotton fabrics, a combinative scouring, bleaching, and cationization pretreatment of the fabrics is designed in this study. The fabrics are first treated in a bath containing commercial scouring and bleaching agents, and then glycidyltrimethylammonium chloride (GTA) is directly added into the bath to achieve cationization of the fabrics. Utilization of the alkaline and high-temperature conditions in scouring and bleaching process, cationization can facilely proceed in a short time. Optimal pretreatment conditions are as follows: greige knitted cotton fabrics are treated in a bath containing 4 g/L scouring agent and 6 g/L 30% hydrogen peroxide at 90 degrees C for 60 min, and then 30 g/L GTA and 3 g/L sodium hydroxide are added in the bath for another 15 min treatment. Fiber performances, including whiteness, water absorptivity, diffusion time, and capillary effect, are tested and evaluated. X-ray diffraction analysis, surface morphology, and thermal analysis of the pretreated cotton are also investigated and compared with that treated only with scouring and bleaching agents. Much higher dye fixation and color yield could be realized on the pretreated cotton in salt-free reactive dyeing. Colorimetric properties of the dyes are studied and good colorfastness of the dyes on the cationic fabrics are obtained. All of the above results show promising prospects of this combinative pretreatment in real application.
机译：为了妥善实现Greige针织棉织物的预处理和无盐染色，在本研究中设计了组合擦洗，漂白和阳离子化预处理。首先在含有商业擦除和漂白剂的浴中处理织物，然后将缩水甘油三亚甲基氯化铵（GTA）直接加入到浴中以实现织物的阳离子化。利用碱性和高温条件在擦洗和漂白过程中，阳离子化可以在短时间内进行。最佳预处理条件如下：将Greige针织棉织物在含有4g / L冲洗剂和6g / L 30％过氧化氢的浴中处理60分钟，然后30g / L GTA和3g / L氢氧化钠在浴中加入另外15分钟的处理。测试和评估纤维性能，包括白度，不吸水率，扩散时间和毛细血管效应。还研究了X射线衍射分析，表面形态和预处理棉的热分析，并将其与漂洗和漂白剂的污水和漂白剂进行比较。在无盐活性染色中，可以在预处理的棉花上实现更高的染料固定和颜色产量。研究了染料的比色性能，并获得阳离子织物上的染料的良性色度。所有上述结果都显示了这种在实际应用中的这种组合预处理的希望前景。

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