Chemical salt is widely used in the textile industry. The practice of dyeing is common and the process is practiced all over the world. But what exactly does salt do? You can think about it and never know the real reason why you did it. Good! The common belief is that salt makes the color last longer, but I will tell you more about this by reading the article above.
Here are the facts you need to know about dyeing fabric.
The Reason Behind It
When it comes to salt used in the textile industry, there are several factors that you need to understand. The substrate molecules and pigments must not be similar in structure and properties if they are mixed. To prevent slow conditions and stains, a catalyst is needed to effectively and accurately dye the fabric. The salt acts as a catalyst that speeds up the reaction. Salt has a very high affinity for water.
In General, Salt Is Important In Three Ways.
- First, we need seasoned salt, so that the color is deeply embedded in the texture.
- Second, when you dye a fabric, the molecules dye very quickly.
- Finally, the salt acts as an electrolyte in the dyeing process, where it migrates, adsorbs, and dyes into the cellulosic material.
The role that salt plays in the dying process
Here are some functions of salt to know about the fabric dyeing process.
- When reactive dyeing is done, the salt increases the affinity of the dye to the cellular substrate.
- The rate of reduction of the dye reaction is increased with the help of salt.
- Inorganic salts must be added when reactive dyes are used to accelerate adsorption, because reactive dyes have the lowest affinity.
The latest developments in high-precision paints reduce the amount of inorganic salts, because the amount of inorganic salts used varies according to the type of paint used.
While the price of salt varies, the common salt used is zero salt, also called sodium chloride. This is done in the presence of active sodium cations. It is affirmatively objected to.
Reactive Dyeing
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It improves the affinity of dyes for fibers and improves the kinetics of dye binding and their low solubility, which plays an important role in performance. Common or table salt is sometimes used for this purpose. Salt contains chlorine, the ion responsible for corroding the equipment you use. So either stop using metal or use plastic or glass utensils. Or use another type of salt.
Sodium sulfate, also known as glaber salt, is preferred over common salt. Its composition is Na2SO4.10H2O. The utensils of whatever you use will not be eaten. The powder is white or sometimes colorless and looks like crystals. Dry air causes it to swell and form anhydrous sodium sulphate in powder form. The cost of the hot spring has a very bitter and salty taste. They usually use laxatives and dyes. Sodium chloride, commonly used by its generic name, is an open salt.
Role of Mineral Salts In Reactive Dyeing
· They play a key role in fatigue staining with reactive inorganic dye salts.
· Improves color appeal.
· Speeding up color matching and reducing its solution.
Most color reagents contain a sulfonic acid group (-SO3H), which is insoluble in water. During the reactive dye manufacturing process, the sulfonic acid groups are converted to the sodium salt of sulfonic acid (-SO3Na) which is soluble in water.
The Process of Salt Ionization Is as Follows.
Therefore, in the reactive dyeing process of textiles or textiles, the presence of salt increases the cellular affinity of the dye. Fixation can be improved by adding Glaber’s salt to the drainage bath prior to fixation, as reactive dyes have a low affinity for cellulose. By reducing the amount of fluid, the amount of salt required for fatigue is reduced.
Conclusion
Finally, salt is needed for the dyeing process. Use salt if you want your fabric to have color for longer. The recommended salt to use is Glaber salt.
