Tie and dyeing of cotton with reactive dye
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Date
2012
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CCSHAU
Abstract
The present study was conducted to standardize dyeing process of reactive dye for
cotton using tie and dye technique. Red hot reactive dye was selected for dyeing of white
cotton fabric. Standardization of dyeing variables viz, dye concentration, dyeing
temperature, dyeing time, dyeing pH and different auxiliaries concentrations were
optimized on the basis of percent dye absorption and visual appearance. Colour fastness
properties of tie-dyed samples were also evaluated regarding washing, sunlight, perspiration
and rubbing fastness. It is summarized that 4 percent was the optimum dye concentration on
the basis of maximum percent dye absorption whereas on the basis of colour fastness 2
percent was optimized. Thus 2 and 4 percent were selected as light and medium shades of
red reactive dye. The optimum dyeing temperature was 80°C, time was 90 minutes and pH
was 10.5 for both the dye concentrations. 60g/l of sodium sulphate concentration was
selected for 2% dye concentration and 70g/l for 4% dye concentration as it gave maximum
dye absorption. 15 g/l concentration of sodium carbonate was selected for 2% dye
concentration and 20g/l for 4% dye concentration as it gave maximum dye absorption
Samples were tied and dyed with the standardized dyeing conditions and dyed samples were
assessed for their colour fastness properties. Samples with 2 percent dye concentration gave
better colour fastness properties than 4 percent dye concentration. Shopping bags were
developed by object binding, knotting and leharia technique using reactive dye were highly
appreciated by the experts as well as consumers. Training on use of hot reactive dyes for tie
and dye technique using standardized dyeing conditions was imparted to rural women.
Training was found to be very effective as there was significant gain in knowledge.
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Grasses, Spacing, Selection, Planting equipment, Planting, weeds, Vegetative propagation, Drying, Sowing, Biological development