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Rıza Atav,Öner Gündüz,Sercan Yaz,Gizem Çakan,Bahadırhan Sevgili 한국섬유공학회 2023 Fibers and polymers Vol.24 No.8
Today, sustainable production has become an important concept. As the trends in the world bring about the widespread use of used-looking clothes, it has become mandatory to apply processes such as spray rodeo, which is the process done by spraying permanganate with a special spray gun or applying it with a brush to the desired area. However, permanganate has risk of causing irritation to the face and eyes, and cough, mucosal irritations, shortness of breath, etc. Therefore, it is of great importance to replace permanganate with clean alternatives. In this study, it was aimed to obtain high bleaching efficiency via laser-activated organic bleaching process and thus to obtain permanganate-like results in a sustainable way. It was found that the effects of organic bleaching agent concentration and pixel time on the degree of color fading are statistically significant and the optimum color fading could be achieved at 30% bleaching agent concentration and 300 μs pixel time. However, the bleaching agent concentration and/or pixel time can be changed according to the desired degree of color fading. Results indicated that by using laser-activated organic bleaching process, it is possible to obtain nearly same color fading effects with that of permanganate bleaching, which means a cleaner alternative has been developed.
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Kaya Karabulut,Rıza Atav 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8
Natural dyes are gaining importance in textile dyeing applications in recent years due to the fact many syntheticdyes are carcinogenic, mutagenic, and allergic. In this study, cotton knitted fabrics were dyed with extract solutions of 40different dye plants without the mordant usage. Afterwards color efficiency and fastness values of dyed samples wereevaluated. Dye plants that are able to give good color efficiency with sufficient fastness values were determined. Accordingto the experimental results it can be said that for yellow color pomegranate peel and turmeric; for red color madder andquince; for blue color indigo; for green color myrobalan; for brown color white onion peel and catechu give the optimumresults. Furthermore, it was tested whether ultraviolet protection effect could be obtained via dyeing with white onion peel orturmeric and it was found that both of these plants gave very good UV protection functionalization to cotton fabrics.
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