Microwave-Assisted Appraisal of Neem Bark Based Tannin Natural Dye and Its Application onto Bio-Mordanted Cotton Fabric

The current study is aimed to utilize the microwave for isolation of colorant from neem bark and its application onto chemical bio-mordanted cotton fabric. For the purpose aqueous, acid and organic media have been employed to isolate the colorant and to make its application onto surface modified and bio-mordanted cotton fabric followed by microwave treatment up to 6 min. It is found that using optimum extraction and dyeing conditions, acceptable fastness properties have been rated when 9% of Al 7% of Fe tannic acid as pre chemical, 7% of acacia pomegranate, 9% of henna 5% of turmeric extract as pre bio-mordants were employed. Similarly, 5% of Al Fe, 9% of T.A as post-chemical, 7% of pomegranate 9% of turmeric, acacia henna extracts as post bio-mordants has given acceptable fastness ratings. It is recommended that isolation of colorant dyeing under MW treatment has not only improved the natural dyeing process but also the addition of herbal-based bio-mordants have made the dyeing process more sustainable ayurvedic. So it is concluded that microwave treatment has not only explored the coloring potential of neem bark but also made possible use of bio-mordants for making process greener with excellent color characteristics under reduced optimal conditions.