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首页> 外文期刊>Polymers >Dyeing Property and Adsorption Kinetics of Reactive Dyes for Cotton Textiles in Salt-Free Non-Aqueous Dyeing Systems
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Dyeing Property and Adsorption Kinetics of Reactive Dyes for Cotton Textiles in Salt-Free Non-Aqueous Dyeing Systems

机译：无盐非水染色系统棉纺织品活性染料的染色性能及吸附动力学

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In recent years, new concepts in textile dyeing technology have been investigated which aim to decrease the use of chemicals and the emission of water. In this work, dyeing of cotton textiles with reactive dyes has been investigated in a silicone non-aqueous dyeing system. Compared with conventional aqueous dyeing, almost 100% of reactive dyes can be adsorbed on cotton textiles without using any salts in non-aqueous dyeing systems, and the fixation of dye is also higher (80%~90% for non-aqueous dyeing vs. 40%~50% for traditional dyeing). The pseudo-second-order kinetic model can best describe the adsorption and equilibrium of reactive dyes in the non-aqueous dyeing systems as well as in the traditional water dyeing system. In the non-aqueous dyeing systems, the adsorption equilibrium of reactive dyes can be reached quickly. Particularly in the siloxane non-aqueous dyeing system, the adsorption equilibrium time of reactive dye is only 5–10 min at 25 °C, whereas more time is needed at 60 °C in the water dyeing system. The surface tension of non-aqueous media influences the adsorption rate of dye. The lower the surface tension, the faster the adsorption rate of reactive dye, and the higher the final uptake of dye. As a result, non-aqueous dyeing technology provides an innovative approach to increase dye uptake under a low dyeing temperature, in addition to making large water savings.
机译：近年来，已经研究了纺织染色技术的新概念，旨在减少化学品的使用和水的排放。在这项工作中，已经在硅氧烷非水染色系统中研究了具有活性染料的棉纺织品的染色。与常规水性染色相比，几乎100％的反应性染料可以吸附在棉纺织品上，而不使用非水染色系统中的任何盐，并且染料的固定也更高（非水染色的80％〜90％。传统染色40％〜50％）。伪二阶动力学模型可以最好地描述非水染色系统中反应性染料的吸附和平衡以及传统的水染色系统。在非水染色系统中，可以快速达到反应性染料的吸附平衡。特别是在硅氧烷非水染色体系中，反应性染料的吸附平衡时间仅为5-10分钟在25℃，而在水染色系统中在60℃下需要更多时间。非水介质的表面张力影响染料的吸附速率。表面张力越低，活性染料的吸附率越快，染料的最终吸收越高。结果，除了制造大的储蓄之外，非水染色技术还提供了一种创新的方法来增加低染色温度下的染料摄取。

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