WebAug 23, 2013 · A process for dyeing nylon with acid or premetallized acid dyes is provided wherein the dye bath is brought to a temperature of 160 addition of sulfuric acid to lower the pH to 3.75-2.25, thereby improving dye exhaustion. Introduction: Acid dyes are highly water soluble, and have better light fastness than basic dyes. WebOct 30, 2024 · The practice of natural colorants for polyester fabric dyeing has been rampantly rising in our consumer fashion. In this study, two separate natural colorants were extracted from watermelon (Citrullus lanatus) rind (WRS) and flesh (WFS) for polyester coloration. The optical and colorimetric properties of saps and dyed fabrics, dye fiber …
Direct Dyeing - an overview ScienceDirect Topics
WebJ.N. Chakraborty, in Fundamentals and Practices in Colouration of Textiles, 2014 18.6 Mechanism of dyeing. 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 … WebGroup C dye: It has good sublimation fastness (~Grade 3–4), is suitable for all methods to dye polyester, e.g., carrier, HTHP, thermosol, and other processes, ... W. Wunder, “The … c type metal
Disperse Dyes: Properties, Classification, Dyeing & Printing Method
WebJan 23, 2012 · In case of dyeing with disperse dye, temperature plays an important role. For the swelling of fiber, temperature above 100°C is required if high temperature dyeing method is applied. Again in case of carrier dyeing method, this swelling occurs at 85–90°C. If it is kept for more time, then dye sublimation and loss of fabric strength may occur. WebOct 30, 2024 · Sustainable Dyeing Mechanism of Polyester with Natural Dye Extracted from Watermelon and Their UV Protective Characteristics October 2024 Fibers and Polymers … WebThe cationic dye dyeing modification method is to copolymerize a polyester dyeing modifier, such as sodium phthalate-5-sulfonate (commonly known as three monomers, English abbreviation SIPM) with polyester, in the polyester molecular chain after copolymerization. Cationic modification dyeing mechanism. Sulfonic acid groups are introduced, which ... easing back into working out