Combinative Scouring, Bleaching, and Cationization Pretreatment of Greige Knitted Cotton Fabrics for Facilely Achieving Salt-Free Reactive Dyeing.
Combinative Scouring, Bleaching, and Cationization Pretreatment of Greige Knitted Cotton Fabrics for Facilely Achieving Salt-Free Reactive Dyeing.
复制标题
棉坯布精练、漂白和阳离子化预处理组合，轻松实现无盐活性染色
DOI：
10.3390/molecules22122235
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发表时间：
2017-12-18
期刊：
影响因子：
--
通讯作者：
Zhang S
中科院分区：
文献类型：
--
作者：
Ma W;Shen K;Xiang N;Zhang S
为了实现纯棉针织坯布的前处理和无盐染色，设计了煮漂阳离子化组合前处理工艺。织物首先在含有商业精练剂和漂白剂的浴中处理，然后将缩水甘油基三甲基氯化铵（GTA）直接加入浴中以实现织物的阳离子化。利用练漂过程中的碱性和高温条件，可在短时间内进行阳离子化。最佳前处理工艺条件为：纯棉针织坯布在精练剂4g/L、30%双氧水6 g/L、90 °C下处理60 min，再加入GTA 30 g/L、NaOH 3g/L，处理15 min。对纤维的白度、吸水率、扩散时间、毛细管效应等性能进行了测试和评价。X-射线衍射分析，表面形态，和热分析的预处理棉花也进行了研究，并与处理的只有煮漂剂。经预处理后的棉织物在无盐活性染料染色中可获得较高的固色率和得色量。研究了染料的比色性能，并在阳离子织物上获得了良好的染色牢度。上述结果表明，该组合预处理在真实的应用中具有良好的前景。
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.
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