Environmentally friendly dyeing of Silk fabrics Using Microwave Heating

Abstract

A B S T R A C T Silk fabrics were dyed with natural coloring matter extracted from Saffron (Crocus sativus) using a traditional and microwave heating methods. Factors affecting the dyeing properties such as dye extracted quantity, dye concentration, pH values, temperature and duration of dyeing bath were studied. Environmentally friendly pre-treatment with chitosan were used instead of mordant. Color strength (K/S) values was measured for dyed Silk fabrics. The fastness properties including light, washing, and perspiration of dyed fabrics were assessed. The dye extraction and Color strength (K/S) of Silk fabrics indicate that microwave heating is more effective than traditional heating. Other additional features about microwaves are economical (saving time and energy), eco-friendly, and produce a higher dye uptake as compared to conventional techniques. The results show also good fastness properties. It is necessary to promote non-polluting natural dyes, which involve inexpensive equipment and small-scale operations. The exploration of natural dyes can be environmentally and economically viable. Our aim is to show the feasibility of providing high-quality natural dyes extracted from plants, this improving our environment and giving opportunities to the fabric industry to catch up with the current consumer trends towards more aesthetic fabrics with natural products.