Thus the dye molecule takes its place in the amorphous regions of the fibre. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9789380308463500182, URL: https://www.sciencedirect.com/science/article/pii/B9789380308463500273, URL: https://www.sciencedirect.com/science/article/pii/B9781782423393000054, URL: https://www.sciencedirect.com/science/article/pii/B9781845691059500121, URL: https://www.sciencedirect.com/science/article/pii/B9789380308463500078, URL: https://www.sciencedirect.com/science/article/pii/B9781845696962500041, URL: https://www.sciencedirect.com/science/article/pii/B9781845692988500109, URL: https://www.sciencedirect.com/science/article/pii/B9781845691158500061, URL: https://www.sciencedirect.com/science/article/pii/B9781845692629500042, Fundamentals and Practices in Colouration of Textiles. The exfoliated platelets contributed in making several surface-modified cations available for the ionic interaction with the anionic sulfonate group of acid dyed molecules. The automatic portion of carrier is postulated to have Van Der Waal’s force and attraction for hydrophobic group of it attracts water. Dyeing process is to put colors or color-designs by using dyestuffs onto yarn, woven, and knitted fabrics. 4.4. 38 0 obj In carrier method of polyester dyeing, carrier is used. Disperse dyes are used for dyeing man made cellulose ester and synthetic fibres specially acetate and polyester fibres and sometimes nylon and acrylic fibres. x�3R��2�35W(�*T0P�R0T(�Y@���@QC= P A�J��� �1Qp�W� /Contents 16 0 R>> Maximising exhaustion, fixation and wash-off of dyes, using zero or minimum amount of salt as well as dyebath reuse have been evaluated showing that there is no adverse affect on the product quality and reproducibility and also reduce the pollution load of the dye-house effluent (Christie, 2007). stream 6 0 obj The dyeing of hydrophobic fibres like polyester fibres with disperse dyes may be considered as a process of dye transfer from liquid solvent (water) to a solid organic solvent (fibre). At first the fabric is padded with dye solution using above recipe in a three bowl padding mangle. To observe the practical advantages and disadvantages of this dye. Disperse Dyes for Polyester Dyeing Method Dyeing process for nylon, triacetate, polyester and acrylic fibres. stream endobj 32 0 obj Then temperature is lowered to 60°C and resist and reduction cleaning is done if required. endstream Disperse dyeing of manmade fibres follows a solid–solid interaction where a solid dye is solubilised in another solid fibre phase and in all cases the dye forms no chemical bonds with fibre rather is retained by H-bonds and Van der Waals forces, except reactive disperse dyes which react only with nylon. 40 0 obj endobj 14 0 obj 34 0 obj In the first method, i.e., one bath-one step method, H-E dyes are mixed with disperse dyes. Equilibrium is achieved when rate of dissolution, surface deposition, absorption and diffusion of dye becomes equal to each other with no further dye uptake. stream The Dyeing Process of Disperse Dyes The dyeing of hydrophobic fibres like polyester fibres with disperse dyes may be considered as a process of dye transfer from liquid solvent (water) to a solid organic solvent (fibre).Disperse dyes are added to water with a … 15 0 obj The PP is endued with the dyeability of disperse dye through the molecular behavior of the co-polyester chain segment. There is commercial usage of red phosphorus especially in Europe and Asia as a very efficient flame retardant for polyesters and nylons.60 This usage is despite concern regarding evolution of traces of phosphine (from interaction with moisture) and the red color, which is difficult to mask even with large amount of colorants.

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