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Sustainable wool fabric pad dyeing using reactive dyes in silicone non-aqueous medium
Environmental Chemistry Letters ( IF 15.0 ) Pub Date : 2020-09-07 , DOI: 10.1007/s10311-020-01078-7
Wenzhao Cao , Liujun Pei , Hongjuan Zhang , Jiping Wang

Traditional dyeing usually consumes a large amount of water and chemicals, thus causing environmental problems. To alleviate these problems, non-aqueous dyeing technology appears as an alternative for improving dye fixation and reducing effluent discharge. Here we used silicone non-aqueous medium to dye a wool fabric. Continuous pad dyeing with reactive dyes was investigated. We optimized the type of penetrating agent, padder pressure and concentration of dye. Results show that the fixation and exhaustion reach 88% and 98%, respectively, which are higher than for water-based dyed samples. The rubbing fastness of the dyed wool fabric is improved 1–2 times, and the consumption of dye is reduced by 20% by comparison with acid or reactive exhaust dyeing. Other advantages include continuous salt-free dyeing, washing and drying; saving water and less water pollution.



中文翻译:

在有机硅非水介质中使用活性染料进行可持续的羊毛织物垫染

传统的染色通常会消耗大量的水和化学物质,从而导致环境问题。为了减轻这些问题,非水染色技术似乎是改善染料固色和减少废水排放的替代方法。在这里,我们使用有机硅非水介质对羊毛织物进行染色。研究了用活性染料连续浸轧染色。我们优化了渗透剂的类型,填充压力和染料浓度。结果表明,固色和耗竭率分别达到88%和98%,高于水基染色样品。与酸性或活性排气染色相比,染色羊毛织物的耐摩擦性提高了1-2倍,染料消耗减少了20%。其他优点包括连续无盐染色,洗涤和干燥;

更新日期:2020-09-08
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