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ABSTRACT
The present study aims at optimization of dyeing process parameters such as dyeing temperature, dyeing pH, and mordant concentration toward achieving maximum color strength and antimicrobial activity of cotton fabric dyed with Indian madder (Rubia cordifolia) as a natural dye. Box-Behnken three factorial with three levels experimental design (dyeing temperature ranges are 60ºC, 70ºC, and 80ºC, dyeing pH ranges are 6, 9, and 12, Mordant concentration ranges are 10%, 20%, and 30% of OWF) was used for optimization. Results showed that all the selected process variables have influenced the color strength as well as antimicrobial activity against the microbes such as Staphylococcus aureus and Escherichia coli. The quadratic regression models have been developed for optimization of all the process parameters and it was validated through ANOVA. UV-Vis spectroscopy, Phytochemical analysis, and FTIR studies have been conducted to confirm the presence of the phytochemical compounds.
摘要
本研究旨在优化染色温度, pH值, 媒染剂浓度等染色工艺参数, 使天然染料印度红 (Rubia cordifolia) 染色棉织物达到最大的色强和抗菌活性. 采用Box-Behnken三因素三水平实验设计 (染色温度范围为60°C, 70°C, 80°C, 染色pH范围为6, 9, 12, 媒染剂浓度范围为OWF的10%, 20%和30%) 进行优化. 结果表明, 所选择的工艺参数都会影响颜色强度以及对金黄色葡萄球菌和大肠杆菌等微生物的抗菌活性. 建立了优化各工艺参数的二次回归模型, 并通过方差分析进行了验证. 紫外-可见光谱, 植物化学分析和FTIR研究已经进行, 以确认植物化学化合物的存在.