LEE- Yenilikçi Teknik Tekstiller Lisansüstü Programı

Bu topluluk için Kalıcı Uri

http://hdl.handle.net/11527/19497

Gözat

Konu "fabric dyeing" ile LEE- Yenilikçi Teknik Tekstiller Lisansüstü Programı'a göz atma
  • Öge
    Investigation of color deepening agents for reducing dye consumption in cotton fabric dyeing
    (Graduate School, 2025-06-02) Sükütler, Ezgi ; Şahin, Umut Kıvanç ; 503221815 ; Innovative Technical Textiles
    The textile industry is a dynamic sector with major economic and environmental impacts on a global scale. Dyeing plays an important role in meeting consumer expectations by adding aesthetic value. However, high amounts of dye use create a disadvantage in terms of sustainability by increasing water, energy and chemical consumption. In this study, it was aimed to reduce the amount of dye used in cotton fabrics, and the effect of color deepening silicone emulsions was examined for this purpose. The success of the dyeing process is closely related to the structure of the textile surface used and the dyestuff selected. The surface used in this study is 100% cotton knitted fabric, which has a high affinity for reactive dyes due to its cellulose structure. Reactive dyes provide permanent and durable color by forming covalent bonds with the primary hydroxyl groups in cotton fibers. Therefore, dyeing cotton with reactive dye is preferred due to its high color fastness and wide color scale. In the study, 100% cotton pique fabrics were used and turquoise color was obtained with three different reactive dyes (Reactive Blue 221, Reactive Blue 21 and Reactive Yellow 161). A total of 17 different recipes were prepared and the dye ratios were reduced in different ways, then two different silicones, "Rucofin Moon" (macro structure) and "Trio Deep Color" (semi-macro structure), were applied. The solid matter ratios of the silicones were determined with a moisture analyzer and the application doses were adjusted according to these values. In spectrophotometric analyses, the effect of silicone applications on ΔE (color difference) and K/S (color intensity) values were evaluated in groups. The most successful results were obtained with macro silicone application in recipe number 14; and thus scale-up production was carried out with this recipe. The colored fabrics were subjected to physical tests such as air permeability, hardness, pilling and bursting strength. The results show that macro silicone is more successful in providing color depth and improving some physical properties; while semi-macro silicone provides more softening, it is not as successful as macro silicone in closing the color difference. This study offers an alternative finishing approach that can reduce the environmental burden by achieving the target color with lower dye usage.