Modulation of Marigold Based Lutein Dye and its Dyeing Behaviour Using UV Radiation

ABSTRACT

Application of natural dyes has increased interest in the past few years due to the eco-friendly behavior of these dyes. The present research is concerned with the effect of UV on dyeing behavior of cotton using marigold as source of natural Lutein dye. This is colorant lutein which imparts greenish yellow color to cotton fabric. The dye powder and cotton fabric were exposed to UV-radiation for different time intervals prior to dyeing and dyeing was performed at different dyeing variables. International Standard Organization (ISO) methods were employed to evaluate the color fastness properties, such as color fastness to light, washing and rubbing. It is found that 90 min exposure of UV radiations was the optimum condition for surface modification and dyeing of 70 min at 40°C give excellent results using 4 g/L salt to achieve maximum exhaustion. For improvement of color fastness, tannic acid (8%) as pre- and 6% as post-mordant is the best condition. It is found that UV ray treatment can be used to other fabrics followed by dyeing using extracts of dye yielding plants without any physical characteristics damage.

摘要

天然染料由于具有环保性，在过去几年中的应用日益广泛。本研究关注紫外线对使用万寿菊作为天然染料染色的棉织物的染色行为的影响。这种着色剂叶黄素会使棉织品呈黄绿色。在进行染色前，染料粉末和棉织物暴露于UV辐射下不同的时间，并在不同的染色变量条件下进行染色。采用国际标准组织（ISO）方法来评价色牢度性能，例如耐光色牢度、耐洗色牢度和耐摩擦色牢度。研究发现，在UV幅射下曝光90分钟是表面改性的最佳条件，使用4 g/L盐在40℃下染色70分钟可达到最大吸尽效果。为改进色牢度，预先使用单宁酸（8％）和事后使用6％单宁酸作为媒染剂可达到最佳状态。研究发现，在使用从植物提取的染料进行染色后，可以用紫外线处理其它织物，而不会损害任何物理特性。

KEYWORDS:

• Alum
• cotton
• dyeing
• lutein
• tannic acid
• UV radiation

关键词:

• 明矾
• 棉
• 染色
• 叶黄素
• 单宁酸
• 辐射

Acknowledgment

We are grateful to Mr. ZafarIqbal Manger QA & QC of Noor Fatima Textile (Pvt.) Limited, Faisalabad and Muhammad Abbas Director Harris Dyes and Chemical (Pvt.) Limited, Faisalabad, for providing the technical assistance and facilities of fastness testers and spectra flash (SF650).