Jute, popularly known as "Golden fibre of India" has gained immense popularity around the globe because of its bio-degradable and eco-friendly character. Apart from being eco-friendly, jute possesses the characteristics of a silky luster with high tensile strength and low extensibility. It has traditionally been used as packaging material for the transport and storage of agricultural and industrial products. A small percentage of jute products are used in diversified value-added articles and the possibility of using jute for value-added diversified products has been explored in the recent past. Government of India is giving special emphasis on re-orientation of R&D activities on jute with special thrust on value-added diversified products. The thrust of jute diversification programme includes use of jute fibre in the areas like: Handloom and Handicrafts, Industrial Applications, Jute Composites, Decorative, Food Grade Jute Products and Geo-Jute. In case of jute diversified products more focus should be given on its aesthetic appeal or exclusive designs rather than its functional performance. Dyeing and printing of jute with vegetable colour is one such approach which needs to be explored systematically and also scientifically for producing diversified value-added jute products. The present article reports dyeing and printing of jute yarn and/or fabric with vegetable colourants in absence and presence of different inorganic salts for producing eco-friendly jute diversified products and to assess different colourfastness properties of those dyed and printed fabrics.
Tea (Camellia sinensis) is a beverage produced from leaves of the tea plant. The chief biochemical colouring compounds present in tea liquor are the aflavin and the arubigins. Marigold (Tagetes erecta) is a stout branching herb extensively cultivated in all over India and commonly used at religious ceremonies. The flowers mainly contain the flavonol-quercetagetol, a derivative of quercetol. Madder dyes are hydroxyl-anthraquinones, which are extracted from the root bark of various Rubiaceae e.g. from madder root (Rubia tinctorum). The root contains approximately 1.9% of dye and many shades of red can be created with the colour extracted from madder root. Indian Mahogany (Cedrela toona) is a high tree belonging to Meliaceae family. The bark of this tree is smooth and dark brown in colour. The bark extracts are used as astringent for wounds. The flowers contain a flavonic yellow pigment quercetol. Khair (Acacia catechu) is a small deciduous tree belonging to leguminous woods and can be used as vegetable colourants. Different shades of brown and yellow colour can be produced with the bark of Khair.
The author is associated with Visva-Bharati University, Department of Silpa-Sadana, Textile Section, Srniketan, West Bengal