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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针织棉织物的精练，漂白和阳离子化组合预处理，可轻松实现无盐反应性染色

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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 °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. View Full-Text
机译：为了方便地实现坯布针织棉织物的预处理和无盐染色，本研究设计了织物的组合精练，漂白和阳离子化预处理。首先在含有市售精练剂和漂白剂的浴中处理织物，然后将缩水甘油基三甲基氯化铵（GTA）直接添加到浴中以实现织物的阳离子化。在煮练和漂白过程中利用碱性和高温条件，阳离子化可以在短时间内容易地进行。最佳预处理条件如下：将坯布针织棉织物在含有4 g / L精练剂和6 g / L 30％的过氧化氢的浴中于90°C处理60分钟，然后再处理30 g / L GTA和3 g将/ L氢氧化钠加入浴中，进行另外15分钟的处理。测试和评估纤维性能，包括白度，吸水率，扩散时间和毛细效应。还研究了预处理棉的X射线衍射分析，表面形态和热分析，并将其与仅使用精练剂和漂白剂处理的棉进行了比较。在无盐活性染色条件下，预处理后的棉布可以实现更高的固色性和出色率。研究了染料的比色性能，并在阳离子织物上获得了良好的色牢度。以上所有结果表明，这种联合预处理在实际应用中具有广阔的前景。查看全文

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