Textile Dyeing Applied Scientific Discipline | Fiber, Yarn, Cloth Or Garment Dyeing

Dyeing: It is the procedure of making colorful the substances treated equally textiles similar equally fiber, yarn, textile equally good equally garment. Dyestuffs hand color to the stuff onto which they convey been anchored past times selectively retaining to a greater extent than or less of the wavelengths out of the lite falling upon the surface. Different types of dyestuffs are used to dye specific fiber or yarn according to the characteristic as well as nature of both fiber as well as dyestuffs. Wavelength of lite absorbed is 400-750nm.

Theory of Dyeing:

The forces which anchor dyestuffs molecules to textile fibers are complex as well as the written report of them has attracted many investigators. The procedure consists of 3 stages which are -

• Migration of the dye from the solution to the interface accompanied past times adsorption on the surface of the fiber.
• Diffusion of he dye from the surface towards the center of the fiber.
• The anchoring of the dye molecules past times covalent or hydrogen bonds, other forces of a physical nature.

Chromophore: Every dyestuffs contains chromophore grouping inwards its chemic structure. The chemic chemical compound which contains azo, nitro or keto grouping inwards its construction they are as well as thus called chromophore group. These are the primary constituent of dyestuffs sweat of they are color bearing group. Dyes equally good equally pigments incorporate this same group.

Auxochrome: Only dyestuffs incorporate this grouping other than pigment. The chemic chemical compound which incorporate amino, carboxilic or sulphone grouping inwards their chemic construction are usually known equally auxochrome group. These are too known equally color increasing group.

Hue: Hue is the discussion past times which nosotros tin perceive the color. By virtue of it nosotros tin holler upwardly of equally describing color. Red, Green or Blue.

Value (lightness): describes overall intensity to how lite or night a color is. It is the exclusively dimension of color that may be past times itself.

Chroma (Saturation): may move defined equally the strength or authorization of the hue. On the outer border of the hue cycle are the intensely saturated hues.Towards the see of the color wheel, no hue dominates as well as they becomes less as well as less saturated.

Shade: It way the deepness of color or concentration of color where maximum per centum of colors are used to brand a deeper shade. Usually .5-1.5% is treated equally lite shade, 1.5 - 2.5 is treated equally medium shade as well as higher upwardly 2.5% is treated equally deep shade.

Tinctorial Power: It is the belongings of whatever dye which gives to a greater extent than or less reactivity capability to arrive at deep to lite shade amongst the same sum of chemicals equally good equally dyestuffs.

Common Dyestuffs 

• Direct dye (Specially to cotton)
• Acid dye ( Affinity to Protein Fiber)
• Basic dye ( Affinity to jute fiber)
• Vat dye (Best for cotton)
• Reactive dye (Without manufactured fiber apply to all)
• Disperse dye (Volatile dye role to hydrophobic fibers)
• Azoic dye (Cotton, Wool, Silk)
• Sulpher dye (Only dark shade to all fiber)

Color stuff tin move imparted at all the stages similar fiber, yarn, textile or garment dyeing. Now garments dyeing is becoming pop amid teenagers as well as ladies.

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