HANDMADE TURMERIC DYEING
—- Each Step Of Process —- Do By Hand — Solar Energy Made — By- Fibre2Fashion —
TURMERIC DYEING …
In recent years the usage 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 non-toxic in nature. Also, the usage of renewable sources of energy in textile and apparel industry has been increased due to many advantages associated with it. Solar energy usage for dyeing purpose is a cost effective method. In countries with hot summers, the sun shines bright for 60% of the day, using solar energy to dye silk fabric with turmeric dye is cheap and environment friendly method.
There are certain things required in order to dye with turmeric dye which are listed as follows- turmeric plant stems or powder, raw fabric yarn or fabric, diluted nitric & acetic acid and mordants like alum & stannous chloride.
The fabric is washed and dried. This whole process is known as degumming.
Enhancing of dyeing parameters
To dye fabric with turmeric dyes certain procedures are to be followed. The dye dilution, the time taken for its extraction, time for dyeing, amount of mordant used and mordanting process are to be taken care of to result into turmeric dyed fabrics which is evenly dyed with no color patches or differences in shade.
Not only yellow color is produced through dyeing with turmeric dyeing but also many other shades of color are produced when turmeric dye is mixed with other colors, like green, blue with addition of indigo and red with addition of safflowers and mango rind.
You might think how both red and yellow colors are produced through turmeric dye in its original form, the answer lies in the type of liquid used for concentration. When the solution is prepared in acidic liquid it would produce yellow dye and when alkali liquid is used it would produce red dye.
Time for dye extraction:
In order to extract the dye, aqueous mode is utilized. The dye is examined for its evenness and color shade by quality control supervisors before applying to the fabric. The turmeric powder is which is one gram is diluted with 100 ml of water. Four such solutions are prepared. Each one is boiled for four different time period i.e. 20, 40, 60 and 80 minutes in a solar cooker, or a stove-top can be used.
Time taken for dyeing:
The optimum dye solution is utilized to standardize the dye concentration. The dyes undergo the procedure of absorption in a solar cooker time ranging from 30-180 minutes. The absorption power of the fabric determines the dyeing time
Concentration of acid:
The two acids used for dilution are acetic and nitric acid. From each of diluted acid, 20 ml is mixed into the dye bath. The dyes are examined for their absorption power. This examination is done visually.
The mordants discussed earlier Alum and Stannous chloride are used here. The process of dyeing and mordanting are done together. Both these mordants are mixed with water which results into optimized mordants.
Procedure for mordanting:
There are two methods in mordanting premordanting and postmordanting. The pre-requisite of this process is to keep other things like dyeing time, acid concentration, etc. steady. By looking at the dyes the method of mordanting i.e. pre or postmordanting to be used is decided.
Appropriate dyeing conditions:
1. The right level of dye concentration is 3g per 100ml of water used for 1 gram for silk fabric as it was observed that the percentage of absorption of dye by silk fabric is best if done in this measurement.
2. As stated earlier four different dye extraction time was used- 20, 40, 60 and 80 minutes, however it was found that 60mins/1hour time duration produced turmeric dye with maximum absorbency.
3. The right level of acid concentration in dye bath is, for acetic acid is 2% and 3% for nitric acid. After this concentration the dye absorbency decreases.
4. The best concentration for mordants was 0.4g for stannous chloride and 5g for Alum. Use of appropriate mordent concentration helps in better absorption of turmeric dye on silk fabric.
5. It was found that the turmeric dyes absorbency was better with stannous chloride and postmordanting method was better than premordanting method.
Fabric dyed with turmeric dye using solar energy gives better results. Color evenness and better dye absorbency is experienced when dyeing the silk fabric by turmeric dyes. The existing silk dyeing units are being encouraged to use turmeric dyeing method. It does not pose any chemical harm on part of the dyer as well as the wearer. Also the added benefit is that the government also supports such environment friendly processes.
To read more, please visit www.fibre2fashion.com/industry-article/
EZ Steps To FABULOUS … Handcrafted Incense
ALL YOU NEED TO CRAFT EXOTIC INCENSES … BASIC-TO-ADVANCED CRAFTING … Rediscover how to make organic,Read More