Chemical cationization of cotton fabric for improved dye uptake
Chemical cationization of cotton fabric for improved dye uptake
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DOI：
10.1007/s10570-014-0457-2
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发表时间：
2014-12-01
期刊：
影响因子：
5.7
通讯作者：
Meulewaeter, Frank
中科院分区：
文献类型：
--
作者：
Acharya, Sanjit;Abidi, Noureddine;Meulewaeter, Frank
棉织物通常用活性染料染色。在染色过程中，需要大量的盐来实现染料从染浴到纤维上的更高的上染率。棉用活性染料染色由于排放大量的高度着色和含盐废水而具有显著的环境影响。化学阳离子化通过化学改性纤维素大分子以引入带正电荷的位点，允许棉纤维在没有盐的情况下染色。采用3-氯-2-羟丙基三甲基氯化铵（CHPTAC）对棉织物进行阳离子化处理。使用两种活性染料CI活性蓝235和CI活性蓝19评估染料吸收。使用Datacolor-HueMeetion Monitor系统测定染料吸尽动力学。方差分析表明，CHPTAC浓度和耗竭时间的百分比耗竭的显着影响。与对照织物相比，阳离子化织物在染色循环结束时的颜色强度显著更高。本工作表明，用CHPTAC处理棉由于阳离子位点的引入而提高了上染性能，并且在不添加盐的情况下导致上级染色。
Cotton fabric is usually dyed with reactive dyes. During the dyeing process, a large amount of salt is required to achieve higher exhaustion of the dye from the dyebath onto the fiber. Dyeing of cotton with reactive dyes has a substantial environmental impact due to the discharge of a large volume of highly colored and saline effluents. Chemical cationization allows cotton fibers to be dyed without salt by chemically modifying cellulosic macromolecules to introduce positively charged sites. In this study, cotton fabric was cationized using (3-chloro-2-hydroxylpropyl) trimethyl-ammonium chloride (CHPTAC). Dye uptake was assessed using two reactive dyes, CI Reactive Blue 235 and CI Reactive Blue 19. Dye exhaustion kinetics were determined using a Datacolor-HueMetrix Monitor system. Analysis of variance demonstrated significant effects of CHPTAC concentration and exhaustion time on the percent exhaustion. Color strength at the end of the dyeing cycle was significantly higher for cationized fabrics compared to the control fabric. This work shows that treatment of cotton with CHPTAC enhanced dye uptake properties due to the introduction of cationic sites and resulted in superior dyeing without the addition of salt.