ABSTRACT

Dyeing of cotton cellulose is done mostly with reactive dyes which form a strong covalent bond with the substrate. Reactive dyeing process requires a high amount of salt and alkali. Studies have been made to improve the exhaustion and reduce the use of a high amount of salt and alkali by cationization of the substrate. This study focuses on the carbamation of mercerized cotton cellulose for the purpose of preparing an alternative way of dyeing cotton fabric with Reactive dye in the absence of electrolyte. The effect of carbamation was shown by FTIR spectra qualitatively, where the optimal results were with urea concentration of 400 g/l, temperature of 135°C and time of 5 minutes. The carbamated cotton showed lower decomposition temperature than that of native cotton. The color strength, exhaustion, fixation and total dye utilization studies show good results compared to dyeing conventional cotton fabric.

摘要

棉纤维素的染色主要使用与基材形成强共价键的活性染料。活性染色工艺需要大量的盐和碱。已经进行了研究以通过基材的阳离子化来改善耗竭并减少大量盐和碱的使用。本研究着重于丝光棉纤维素的氨基甲酸酯化，目的是制备一种在没有电解质的情况下用活性染料对棉织物进行染色的替代方法。FTIR 光谱定性显示了氨基甲酸酯化的影响，其中最佳结果是尿素浓度为 400 g/l，温度为 135°C，时间为 5 分钟。氨基甲酸酯化棉的分解温度低于天然棉。颜色强度，疲惫，