Mango kernel starch- A Natural Thickener for Screen Printing on Silk with Kachnar Bark Dye

Saroj Yadav; Geeta Gaba

Volume : V, Issue : IX, September - 2016

Mango kernel starch- A Natural Thickener for Screen Printing on Silk with Kachnar Bark Dye

Saroj Yadav, Geeta Gaba

Abstract :

Dyes are being widely used for embellishing textiles and in ancient times natural dyes were being used vastly for the purpose. But with the invention of synthetic dyes the use of natural dyes gradually went into oblivion as ight colours and shades with good fastness can be obtained with synthetic dyes in lesser time. Nowadays once again with the increased awareness of people about harmful effects of synthetic dyes, use of natural dyes as an alternative source geared up. Green minded and health conscious consumers go for faics dyed and printed with natural dyes. Keeping in view the importance of natural dyes in textile world a study was conducted to print silk faic with kachnar bark dye using mango kernel starch. Eight percent dye was extracted by boiling in 100 ml. water and strained to get dye solution. Extracted dye solution was boiled and evaporated to make 10 ml. dye concentrate. Two concentrations i.e. 2.5% and 5 % of Mango kernel starch powder was used as natural thickener. Copper sulphate and ferrous sulphate were used as mordants. Printing was done by screen printing technique. Printed samples were dried in sun, cured for three days and steamed in laboratory steamer. The printed samples were evaluated visually for depth of colour, evenness of print, sharpness of print and overall appearance. Fastness of printed samples was studied against, sunlight, washing, rubbing and perspiration using standard test methods. Good prints were obtained with screen printing. Results of the study revealed that for visual evaluation all the printed samples scored very good scoring 3.92 to 4.47. The fastness ratings against different fastness tests ranged from fair (2/3) to excellent (5). The fastnesses as well as visual evaluation grades of Mango kernel starch were comparable with guar gum used as controlled thickener; hence concluded that mango kernel starch can be used effectively for printing of silk