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Abstract
Polyester fibers (PES) are the most consumed textile fibers due to their low water absorption; non-ionic character and high crystallinity. However, due to their chemical structure, the chemical interactions between polyester, finishing products, and dyes are quite challenging. We report on the use of ozone to modify the surface of polyester fibers with the goal of improving the interaction of the modified surface with finishing compounds and dyes. We used C.I. Disperse Yellow 211 to dye ozone-treated polyester fabrics and evaluated the effects of ozone treatment using FTIR-ATR, Raman spectroscopy, SEM imaging, rubbing tests, and capillarity measurements. We evaluated the dyeing performance via color analysis, and determined the dyeing kinetics. Experimental results indicate that the modification of polyester fabrics with ozone is a feasible pre-treatment that improves dyeing efficiency allowing better solidity of color and a decrease in the amount of dye required.
Highlights
Most waste generated by the textile industry [1], is composed of organic and inorganic compounds generated during textile dyeing [2,3]
The dyeing of polyester fibers with dispersed dyes is a complex process as it resembles a solid-on-solid dispersion and encounters considerable difficulties due to the absence of reactive sites, which gives this type of fiber a hydrophobic character [10]
We report on the use of ozone gas to modify surface of polyester fibers, and the effect of this ozone pre-treatment on the dyeing of these fibers using disperse dyes
Summary
Most waste generated by the textile industry [1], is composed of organic and inorganic compounds generated during textile dyeing [2,3]. The dyeing of polyester fibers with dispersed dyes is a complex process as it resembles a solid-on-solid dispersion and encounters considerable difficulties due to the absence of reactive sites, which gives this type of fiber a hydrophobic character [10]. In this context, it is possible to make a modification on the polyester fiber in order to improve its hydrophilicity and, facilitate the absorption of the dyes
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