Department of Chemistry, Diponegoro University, Tembalang, Semarang 50275, Indonesia.
Department of Mathematics, Diponegoro University, Tembalang, Semarang 50275, Indonesia.
Int J Biol Macromol. 2024 Sep;276(Pt 2):134017. doi: 10.1016/j.ijbiomac.2024.134017. Epub 2024 Jul 18.
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.
本研究通过用柠檬酸增强媒染过程，从三叶蝴蝶草、黄槿和木槿中提取天然染料来优化织物染色。添加柠檬酸的原理是通过酯化反应将棉织物与染料交联。采用响应面法（RSM）的中心复合设计（CCD）来优化参数。考虑了三种媒染变体和染色参数，如温度和时间。结果表明，预媒染效果更好，最佳温度和时间分别为 65°C 和 82 分钟。用黄槿和柠檬酸媒染的棉织物具有最高的色牢度。本研究成功证明了预媒染、间媒染和后媒染方法的有效性，并优化了条件以达到最佳着色效果，特别是突出了柠檬酸作为交联剂的功效。
