In recent years the use of natural dyes and colors for fabric dyeing has witnessed its revival due to hazardous experience due to effects of synthetic dyes and chemicals. The natural dyes are Eco-friendly, harmless and not toxic in nature. Also, the use of renewable energy sources in the textile and clothing industry has increased because of the many benefits associated with it. Solar energy use for the purpose of dyeing is a cost effective way. In hot countries like India, the sun shines bright for 60% of the day, using solar energy to dye silk fabric with turmeric dye is cheap and environmental friendly way.
Things needed
There are certain things needed to dye the silk with turmeric dye that is listed the following-turmeric plant stems, raw silk fabric yarn, diluted acetic acid & hydrogen and mordants like alum & stannous chloride.
Before applying the pigment in fabrics the process of going sericin from silk is done. Here the silk fabric is first treated with ezee keeping them for approximately an hour and then wash and dry. The whole process is known as degumming.
Improve the dyeing parameters
To dye the silk fabric with turmeric dyes specific procedures must follow. The dye dilution, the time taken for getting its time for dyeing, the amount of pain and used mordanting care process should results in turmeric dyed silk fabric which is equal to sewing patches no difference in color or shade.
Not only yellow colors are made by dyeing with turmeric dyeing but also many other colors are made when turmeric dye is mixed with other colors, like - orange, green, blue color with the addition of indigo and red colors in adding safflowers and mango skin.
You can think how the same red and yellow colors are made by its turmeric pigment original form, the answer lies in the type of liquid used for concentration. When the solution is prepared in acidic liquid it would make the yellow coloring and when alkali liquid is used that will make the red pigment.
Time for pigment extraction:
To obtain a pigment, aqueous mode is utilized. Dye was examined for its evenness and color shade of quality control supervisors before applying the fabric. The turmeric powder is where one gram was diluted with 100 ml of water. Four such solutions ready. Each boiled for four different times during the mean 20, 40, 60 and 80 minutes a day cooker.
Time taken for dyeing:
The optimum dye solution was utilized to standardize the pigment concentration. The dyes undergo the process of intussusception solar cooker time ranging 30-180 minutes. The suction power of silk fabric dyeing sets the time Concentration of acid:
The two acids used for dilution is acetic acid and hydrogen. From each of diluted acid, 20 ml is mixed with pigment why. The dyes were examined for their suction power. The test is done visually.
Mordants use:
The mordants found discussed earlier Alum and Stannous chloride is used here. The process of dyeing and is mordanting done together. Both mordants are mixed with water results in optimized mordants.
Procedures for mordanting:
There are two methods to mordanting premordanting and postmordanting. The pre-requisite of this process is to keep other things like dyeing time, acid concentration, etc. steady. To By looking at the way the dyes mordanting mean pre or used postmordanting decided.
Appropriate dyeing conditions:
1. The right level of pigment concentration is 3g per 100ml of water used for 1 gram for silk fabric is to follow the percentage of dye suction through the silk fabric is best if it finished measuring. 2. As stated earlier four different dye extraction time was used 20, 40, 60 and 80 minutes, but it was found that 60mins/1hour time duration turmeric pigment made with the highest absorbency. 3. The right level of acid concentration in the dye bath is, for acetic acid is 2% and 3% for hydrogen acid. After the dye concentration decreases absorbency. 4. The best concentration for mordants is 0.4g for stannous chloride and 5g for Alum. Use appropriate concentration mordent helps better suction of turmeric to dye silk fabric. 5. It was found that turmeric dye's absorbency is better with stannous chloride and postmordanting system is better than premordanting system.
Conclusion
The silk cloth dyed with turmeric dye energy consumption day provides better results. Color evenness and better dye absorbency encountered when dyeing of silk fabric with turmeric dyes. Existing silk dyeing units are encouraged to use turmeric dyeing method. Does not pose any chemical damage to parts of Dyer as well as users. Also the added benefit that the government also supports such environment friendly processes.
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