Abstract：
This study investigates the optimization of fabric dyeing using natural dyes extracted from Clitoria ternatea, Cudrania javanensis, and Hibiscus sabdarifa by enhancing the mordanting process with citric acid. The principle of adding citric acid is as a crosslinker agent between cotton fabric and dye through an esterification reaction. A central composite design (CCD) of the response surface methodology (RSM) is employed to optimize parameters. Three mordanting variations and dyeing parameters, such as temperature and time, are considered. Results indicate that pre-mordanting yields superior outcomes, with optimal temperature and time at 65 °C and 82 min, respectively. Cotton fabric dyed with Cudrania javanensis and citric acid exhibits the highest color durability. This study successfully demonstrates the effectiveness of pre-mordanting, meta-mordanting, and post-mordanting methods with optimized conditions for achieving optimal coloring outcomes, particularly highlighting the efficacy of citric acid as a crosslinking agent.
摘要：
本研究调查了从丁香中提取的天然染料对织物染色的优化，贾文森,和芙蓉sabdarifa通过增强柠檬酸的媒染过程。添加柠檬酸的原理是通过酯化反应在棉织物和染料之间作为交联剂。采用响应面方法（RSM）的中央复合设计（CCD）来优化参数。三种媒染变化和染色参数，比如温度和时间，被考虑。结果表明，媒染前效果更好，最佳温度和时间为65°C和82分钟，分别。用Cudraniajavanensis和柠檬酸染色的棉织物表现出最高的颜色耐久性。这项研究成功地证明了预媒染的有效性，meta-mordanting,以及具有实现最佳着色结果的优化条件的媒染后方法，特别突出了柠檬酸作为交联剂的功效。
