Eco-friendly coloration of silk and flax fabrics with natural dye enhanced by ultraviolet radiation

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Abstract

Background and objectives
Plants are the main source of natural colorant as they are widely available and can be considered as zero cost dyes, as they are obtained from plants planted for other purposes. All the parts of plants are used for extracting natural color, and most of them have antimicrobial and antifungal values. The importance using of natural dye is not restricted only to its antimicrobial or other medicine value but also to its global benefit through elimination of environmental pollution, caused by usage of synthetic dyes. The disadvantage of coloring fabric with natural dye is its fastener properties, as natural dye has no affinity to the fabric.
Materials and methods
Natural dye from UV-irradiated powder of was extracted using boiling water. The dye was used in coloration of flax and silk fabrics through dyeing process and screen printing. The effect of irradiated treatment time, dyeing bath conditions (time and temperature) as well as fixation type of printed samples has been studied. The effect of UV radiation on the morphology structure of both fabrics was illustrated by scanning electron microscope.
Results and conclusion
UV radiation improved the color strength (K/S) and fastness properties for both colored fabrics either dyed or printed. The optimum dyeing bath conditions used for silk and flax samples were 30°C for 30 min and 90°C for 1 h, respectively. The printed silk samples fixed by thermofixation and printed flax samples fixed using steamer have given better color strength. All dyed samples have antimicrobial properties.

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Egyptian Pharmaceutical Journal
Volume 16, Issue 3
September 2017
Pages 192-198

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