ABSTRACT

The worldwide demand has been raised to use natural dyes in all applied fields of life due to their environmental-friendly and therapeutic nature. For the current study microwave rays as an eco-friendly extraction tool has been used to explore the natural coloring potency of Arjun bark for cotton dyeing. Arjun bark powder was exposed to microwave irradiation for up-to 5 min and was used for extraction of colorant in different media. It has been found that 50 mL of acidified methanol-solubilized extract obtained from 5 min microwave-treated powder has given excellent results when employed onto MW treated cotton at 55°C for 75 min, salt of Fe as chemical mordant and extracts of acacia and turmeric as bio-mordants employed at optimum condition has shown good to the excellent fastness ratings at grey scales. It is concluded that microwave treatment has good potential for the extraction of the colorant from Arjun bark for cotton dyeing and the application of sustainable mordants has made the process more aesthetic and sustainable.

摘要

由于天然染料的环保和治疗性质，世界范围内对在生活的所有应用领域使用天然染料的需求已经提高。在目前的研究中，微波作为一种环保提取工具已被用于探索 Arjun 树皮在棉花染色中的天然着色效力。Arjun 树皮粉末暴露于微波辐射长达 5 分钟，并用于提取不同介质中的着色剂。已经发现，从微波处理 5 分钟的粉末中获得的 50 mL 酸化甲醇溶解提取物在 55°C 下用于 MW 处理的棉花 75 分钟、Fe 盐作为化学媒染剂以及阿拉伯胶和姜黄作为在最佳条件下使用的生物媒染剂已显示出良好的灰度色牢度等级。