In this study, an attempt has been made to dye cotton/acrylic blend fabrics in a single-bath-single-stage method considering today's growing market for such blended products. Yarn-blend cotton/acrylic fabric was produced and dyed at 3% shade using indigo dye in the exhaust method to optimise the dyeing conditions by varying the amount of reducing agent, pH, and dyebath temperature. The colour yield of both the acrylic part and cotton components of the blend was influenced by pH levels. Meanwhile, the temperature played a notable role in determining the colour yield of the acrylic portion. Optimised dyeing conditions were obtained at pH 6 and 120°C for the acrylic part, whereas pH 11 and 90°C temperature were obtained for the cotton part. These conditions involved the use of sodium dithionite (15 g/L) as a reducing agent and sodium hydroxide as an alkali. While the yarn-blend fabrics exhibited a unique shadow dyeing effect, solid dyeing results were achieved with fibre-blend fabrics, underscoring the versatility of this single-bath-single-stage method. To assess the overall dyeing performance, comprehensive evaluations including bursting strength measurements, assessments of fastness to washing, perspiration, and rubbing were conducted, all of which provided valuable insights into the durability and colour retention of the yarn-blend fabrics. This research not only addresses the demand for cotton/acrylic blend fabrics in today's market but also demonstrates an efficient and innovative single-bath-single-stage dyeing approach using indigo dye, which holds promise for the textile industry's future sustainability and product diversity.

中文翻译：

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靛蓝染料单浴一步法棉/腈纶混纺织物染色

在本研究中，考虑到当今此类混纺产品市场的不断增长，尝试采用单浴单阶段方法对棉/丙烯酸混纺织物进行染色。生产棉/腈纶混纺织物，并使用靛蓝染料在浸染法中以 3% 色度染色，通过改变还原剂用量、pH 值和染浴温度来优化染色条件。混纺物中丙烯酸部分和棉成分的得色量均受到 pH 值的影响。同时，温度在决定亚克力部分的得色量方面起着显着的作用。腈纶部分的最佳染色条件为 pH 6 和 120°C，而棉部分的最佳染色条件为 pH 11 和 90°C。这些条件涉及使用连二亚硫酸钠 (15 g/L) 作为还原剂和氢氧化钠作为碱。虽然纱线混纺织物表现出独特的阴影染色效果，但纤维混纺织物实现了坚实的染色结果，强调了这种单浴单阶段方法的多功能性。为了评估整体染色性能，进行了综合评估，包括顶破强度测量、耐洗牢度、耐汗渍牢度和耐摩擦牢度评估，所有这些都为混纺织物的耐用性和保色性提供了宝贵的见解。这项研究不仅满足了当今市场对棉/腈纶混纺织物的需求，还展示了一种使用靛蓝染料的高效创新的单浴单阶段染色方法，这为纺织行业未来的可持续性和产品多样性带来了希望。