银杏叶植物染料在棉针织物上的染色性能研究

Extraction of Natural Dyes from Ginkgo Leaves and Its Dyeing Properties on Cotton Knitted Fabrics

文中主要研究了银杏叶色素的提取工艺及对棉织物进行染色。利用单因素和正交试验法分别确定色素提取及直接染色的最佳工艺,通过测试颜色特征值分析了不同媒染法对棉织物染色效果的影响。结果表明,银杏叶色素提取最佳工艺条件为:提取温度80℃,乙醇浓度80%,料液比1∶10,浸提10 h。棉织物染色优化条件为:色素浓度8%,pH值11,温度80℃,染色60 min。铜、铁离子媒染对棉织物色光影响较大,硫酸铝钾后媒染工艺可以获得较大的K/S值且染色牢度较佳,色光保持良好。

In this paper, it mainly studied the extraction process of ginkgo leaf plant dyes and dyeing process on cotton knitted fabric. Single factor and orthogonal test were used to determine the optimum process of pigment extraction and direct dyeing, and the influence of different mordant dyeing methods on the dyeing effect of cotton fabrics were discussed by testing the color eigenvalue analysis. The results show that the optimum extraction conditions of ginkgo leaf pigment are as follows: ethanol concentration is 80%, material to liquid ratio is 1∶10, and extraction at 80 ℃ for 10 hours. The optimum dyeing conditions for cotton knitted fabrics are as follows: pigment concentration is 8%, pH value is 11, dyeing temperature is 80 ℃ for 60 minutes. Copper and iron ion mordant dyeing has a great influence on the color and light of cotton fabric. It has better apparent depth, good fastness and good color and light by post-mordant dyeing with potassium aluminium sulfate.