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首页> 外文期刊>The Korean journal of chemical engineering >Application of rare earth as mordant for the dyeing of ramie fabrics with natural dyes
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Application of rare earth as mordant for the dyeing of ramie fabrics with natural dyes

机译：稀土媒染剂在麻织物天然染料染色中的应用

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摘要

Selecting appropriate metallic compounds as mordants is essential for dyeing with natural dyes. This paper presents the application of rare earth compounds as mordant for the dyeing of ramie fabrics with four kinds of natural dyes. The influences of pre-mordanting, simultaneous mordanting, and post-mordanting on the dyeing effect were explored. The post-mordanting was proved to give rise to the highest dye uptake. The effects of dyeing conditions including dyeing temperature and time, dyeing bath pH and the concentration of rare earth on the dye uptake were investigated systematically. The fabrics dyed with natural dyes in presence of rare earth as mordant exhibited high color shade stability in the baths with pH varying from being acidic to neutral and alkaline. Employing rare earth as mordant apparently raised the color fastness to washing, rubbing and light of the ramie fabrics dyed with the natural extracts. In comparison with the commonly used metallic salts, using rare earth chlorides as mordants can greatly reduce the ionic concentration employed in natural dyeing. This study proved that rare earth would be a kind or promising environmentally friendly mordant in natural dyeing.
机译：选择合适的金属化合物作为媒染剂对于用天然染料染色至关重要。本文介绍了稀土化合物作为媒染剂在four麻织物上用四种天然染料染色的应用。探讨了媒染前，媒染同时和媒染后对染色效果的影响。事后证明，染后吸收率最高。系统地研究了染色条件，包括染色温度和时间，染色液pH值和稀土浓度对染料吸收的影响。在稀土元素（媒染剂）存在下用天然染料染色的织物在镀液中表现出较高的色泽稳定性，pH值从酸性变为中性和碱性。使用稀土作为媒染剂显然提高了用天然提取物染色的the麻织物的耐洗，耐擦和耐光性。与常用的金属盐相比，使用稀土氯化物作为媒染剂可以大大降低天然染色中使用的离子浓度。这项研究证明，稀土在自然染色中将是一种有益的环境友好媒染剂。

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