Optimization and Extraction of Natural Dye from Tagetes Erecta and Dyeing of Cotton and Silk Fabric Using Banana (Musa Sp.) Pseudo Stem Sap

ABSTRACT

The extraction of natural dye using an aqueous method is a concept of green chemistry to avoid environmental pollution and toxicity. The present study was performed to improve the color strength and fastness properties of the fabrics by using natural dye and banana pseudo stem sap as a natural mordant. The natural dye was extracted from marigold flowers (Tagetes erecta) and optimized for dyeing of cotton and silk fabrics. The extraction of the dye was done in an aqueous solution without using any solvents. The optimum results were obtained when the fabric was dyed at 80°C for 60 min by keeping the mass to liquid ratio 1:40 at pH-7 (1.19). The color strength and CIELab (L*, a*, and b*) color parameters were also investigated. The effect of banana pseudo stem saps as a natural mordant on the color strength and fastness properties of the cotton and silk fabrics were evaluated and compared. The cotton fabrics were further characterized by FTIR spectroscopy and Scanning electron microscopy (SEM) to assess the physical and chemical changes after dyeing and mordanting.

摘要

水法提取天然染料是一种绿色化学概念, 旨在避免对环境的污染和毒性. 采用天然染料和香蕉假茎液作为天然媒染剂, 提高织物的色强度和牢度. 从万寿菊 (万寿菊) 中提取天然染料, 并对其用于棉织物和真丝织物的染色进行了优化. 染料的萃取在水溶液中进行, 不使用任何溶剂. 在pH-7 (1.19) 条件下, 料液比为1:40, 在80°C下染色60min, 染色效果最佳. 还研究了颜色强度和CIELab (L*, a*和b*) 颜色参数. 比较了香蕉假茎液作为天然媒染剂对棉织物和真丝织物的色强度和牢度的影响. 利用FTIR光谱和扫描电子显微镜 (SEM) 对棉织物进行了表征, 以评估染色和媒染剂处理后棉织物的物理化学变化.

KEYWORDS:

• Banana pseudo stem Sap
• color Strength
• fastness
• mordant
• natural dye
• Tagetes erecta

关键词:

• 香蕉假茎汁
• 颜色强度
• 牢固度
• 媒染剂
• 天然染料