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首页> 外文期刊>Journal of Cleaner Production >Valorization of natural dye extracted from date palm pits (Phoenix dactylifera) for dyeing of cotton fabric. Part 2: Optimization of dyeing process and improvement of colorfastness with biological mordants
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Valorization of natural dye extracted from date palm pits (Phoenix dactylifera) for dyeing of cotton fabric. Part 2: Optimization of dyeing process and improvement of colorfastness with biological mordants

机译：从椰枣凹坑（Phoenix dactylifera）中提取的天然染料用于棉织物的染色的均值化。第2部分：使用生物媒染剂优化染色工艺和提高色牢度

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This paper investigates the feasibility of dyeing cotton fibers with solution extracted from date pits which are abundant vegetal material. The extraction step and its optimization were conducted in the first part of this paper. This second part studies the influence of the main dyeing conditions on the color yield K/S and the CIELab coordinates. The studied parameters are pH of the dye bath, temperature and duration of dyeing. Experiments were carried out using Box-Behnken experimental design to be able to analyze the main effects of each parameter, to detect interactions between these parameters and to deduce optimum conditions for dyeing process. The fastness properties of dyed samples were also evaluated. Obtained results indicate interesting sweat, washing and rubbing fastness in the range of 4-5. Three metallic mordants (Alun, ZnSO4 and CuSO4) and three biological mordants (gall nuts, chlorophyll (a) and green almond shell) were used to improve the degree of absorption as well as the color fastness of cotton fabrics dyed with aqueous extract from date pits. The obtained results showed high improvement of fastness (sweat, friction, washing and light fastness) for biological mordants than the metallic ones. (C) 2018 Elsevier Ltd. All rights reserved.
机译：本文研究了从富含植物性物质的枣核中提取的溶液对棉纤维进行染色的可行性。在本文的第一部分中进行了提取步骤及其优化。第二部分研究主要染色条件对颜色产量K / S和CIELab坐标的影响。研究的参数是染浴的pH，温度和染色时间。使用Box-Behnken实验设计进行实验，以便能够分析每个参数的主要影响，检测这些参数之间的相互作用并得出染色过程的最佳条件。还评估了染色样品的牢度性能。获得的结果表明有趣的汗渍，洗涤和摩擦牢度在4-5的范围内。从现在起，使用三种金属媒染剂（Alun，ZnSO4和CuSO4）和三种生物媒染剂（胆仁，叶绿素（a）和绿色杏仁壳）来提高吸收度以及用水浸液染色的棉织物的色牢度坑。所获得的结果表明，生物媒质的牢度（汗，摩擦，洗涤和耐光牢度）比金属媒质的牢度得到了很大的提高。 （C）2018 Elsevier Ltd.保留所有权利。

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