| Introduction | | | | |
| | | | In order to extract the dye, aqueous mode is |
| In recent years the usage of natural dyes and | | | | utilized. The dye is examined for its |
| colors for fabric dyeing has witnessed its | | | | evenness and color shade by quality control |
| revival due to hazardous experience due to | | | | supervisors before applying to the fabric. |
| effects of synthetic dyes and chemicals. The | | | | The turmeric powder is which is one gram is |
| natural dyes are eco-friendly, harmless and | | | | diluted with 100 ml of water. Four such |
| non-toxic in nature. Also, the usage of | | | | solutions are prepared. Each one is boiled |
| renewable sources of energy in textile and | | | | for four different time period i.e. 20, 40, |
| apparel industry has been increased due to | | | | 60 and 80 minutes in a solar cooker. |
| many advantages associated with it. Solar | | | | |
| energy usage for dyeing purpose is a cost | | | | Time taken for dyeing: |
| effective method. In hot countries like | | | | |
| India, the sun shines bright for 60% of the | | | | The optimum dye solution is utilized to |
| day, using solar energy to dye silk fabric | | | | standardize the dye concentration. The dyes |
| with turmeric dye is cheap and environment | | | | undergo the procedure of absorption in the |
| friendly method. | | | | solar cooker time ranging from 30-180 |
| | | | minutes. The absorption power of the silk |
| Things required | | | | fabric determines the dyeing time |
| | | | |
| There are certain things required in order to | | | | Concentration of acid: |
| dye the silk with turmeric dye which are | | | | |
| listed as follows- turmeric plant stems, raw | | | | The two acids used for dilution are acetic |
| silk fabric yarn, diluted nitric & acetic | | | | and nitric acid. From each of diluted acid, |
| acid and mordants like alum & stannous | | | | 20 ml is mixed into the dye bath. The dyes |
| chloride. | | | | are examined for their absorption power. This |
| | | | examination is done visually. |
| Before applying the dye to the fabric the | | | | |
| process of removing sericin from silk is | | | | Mordants usage: |
| done. Here the silk fabric is first treated | | | | |
| with ezee kept in it for approximately one | | | | The mordants discussed earlier Alum and |
| hour then washed and dried. This whole | | | | Stannous chloride are used here. The process |
| process is known as degumming. | | | | of dyeing and mordanting are done together. |
| | | | Both these mordants are mixed with water |
| Enhancing of dyeing parameters | | | | which results into optimized mordants. |
| | | | |
| To dye the silk fabric with turmeric dyes | | | | Procedure for mordanting: |
| certain procedures are to be followed. The | | | | |
| dye dilution, the time taken for its | | | | There are two methods in mordanting |
| extraction, time for dyeing, amount of | | | | premordanting and postmordanting. The |
| mordant used and mordanting process are to be | | | | pre-requisite of this process is to keep |
| taken care of to result into turmeric dyed | | | | other things like dyeing time, acid |
| silk fabrics which is evenly dyed with no | | | | concentration, etc. steady. By looking at the |
| color patches or differences in shade. | | | | dyes the method of mordanting i.e. pre or |
| | | | postmordanting to be used is decided. |
| Not only yellow color is produced through | | | | |
| dyeing with turmeric dyeing but also many | | | | They are also categorized by the generations |
| other colors are produced when turmeric dye | | | | as they were produced in the different years |
| is mixed with other colors, like - orange, | | | | and known as first generation, second |
| green, blue color with addition of indigo and | | | | generation, third generation or fourth |
| red color with addition of safflowers and | | | | generation fibres. This is given in the below |
| mango rind. | | | | chart: |
| | | | |
| You might think how both red and yellow | | | | View Full Article |
| colors are produced through turmeric dye in | | | | |
| its original form, the answer lies in the | | | | - Leading B2B Portal and Marketplace of |
| type of liquid used for concentration. When | | | | Global Textile, Apparel Fashion & Retail |
| the solution is prepared in acidic liquid it | | | | Industry, Provides complete information on |
| would produce yellow dye and when alkali | | | | global Textile Dyes & Chemical industries |
| liquid is used it would produce red dye. | | | | through Products, Articles, News, Jobs and |
| | | | Events. |
| Time for dye extraction: | | | | |