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KATEGORİDEKİ DİĞER YAZILAR
"Disperse Dyes", also known as sublimation inks because they can go directly from solid to gaseous state, are generally powders prepared by grinding the press cake with an equal weight of suitable auxiliary product and a little water, drying it, and then mixing with diluents to obtain a product containing 15-40% dye. is sold.
The very fine particle size (≤1 μm) provides a large surface area that aids dissolution to allow it to be taken up by the fiber. Dyeing speed is significantly affected by the choice of dispersing agent used during milling.
Disperse dyes are small polar dye molecules that can be used to dye thermoplastic fibers such as triacetate, nylon, polyester and other synthetic fibers. Disperse dyes are usually small polar molecules containing anthraquinone or azo groups that do not have charged cationic or anionic groups in the structure. Disperse dyes are slightly soluble in water and disperse with the aid of a surfactant.
Some of this class of dyes have a sensitizing (allergic) effect on human skin and are therefore considered a potential threat when used in textiles. However, there is no specific legislation for textile products for allergenic disperse dyes. It has been reported that such sensitizing disperse dyes are still used in products such as socks and tights, stockings, tights, blouses and underwear.
Disperse dyes are evaluated by solvent extraction and can be detected by liquid chromatography-mass spectrometry (LC/MS).
