Mechanism Of Reactive Dyeing

Dyeing Mechanism Of Reactive Dye On Cationized Cotton Download So from the above table it is obvious that secondary hydroxyl group is the beast reactive while primary one is the most reactive. dyeing mechanism of reactive dye: the dyeing mechanism of material with reactive dye takes place in 3 stages: exhaustion of dye in presence of electrolyte or dye absorption. fixation under the influence of alkali. Reactive dyeing, a textile coloring process, actively interact with yarns and fabrics through a chemical reaction. unlike traditional methods, where colors merely adhere to the surface, it creates brilliant and long lasting colors. reactive dyeing forms a permanent bond with the fabric, resulting in vibrant and enduring hues.

Reactive Dye Chemistry behind reactive dyeing: dyeing principle is based on fiber reactivity and involves reaction of a functional group of dyestuff with a site on fiber to form a covalent link between dye molecule and substance. 4 structural feature of typical reactive dyes molecule are: chromophoric grouping, contributing colour. The reactive dyeing process and method stand as a cornerstone, deploying reactive dyes that form enduring covalent bonds with the fabric through a chemical reaction. this intricate procedure of reactive dyeing encompasses various processes and methods, each contributing to the vibrancy and permanence of the final coloration. 9.2.2 mechanism of dyeing cellulosic fibre with reactive dyes reactive dyes are dyes used for dyeing protein, cellulose and polyamide fibre and they are anionic. it becomes an integral part of the fibre due to the formation of a covalent bond between the reactive group of this dye and the fibre polymer. Reactive dye. in a reactive dye, a chromophore (an atom or group whose presence is responsible for the colour of a compound) contains a substituent that reacts with the substrate. reactive dyes have good fastness properties owing to the covalent bonding that occurs during dyeing. reactive dyeing is the most important method for coloring.