LEE- Tekstil Mühendisliği-Yüksek Lisans

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http://hdl.handle.net/11527/19466

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Yazar "Melikoğlu, Bilge" ile LEE- Tekstil Mühendisliği-Yüksek Lisans'a göz atma
  • Öge
    Development of a drying algorithm for recycled textiles
    (ITU Graduate School, 2025-06-02) Melikoğlu, Bilge ; Şahin, Umut Kıvanç ; 503221802 ; Textile Engineering
    It is a fact that most people complain about how their clothes' quality decreases after multiple washing & drying steps. Decrease on quality of clothes after washing & drying could result from change in size, color, seam strength, fabric strength and pilling/abrasion formation. In this thesis, quality change of 7 different quality t-shirts were investigated in order to find better drying algortihm for recycled textiles. Tests were made before washing, after 3 times washing & drying and after 6 times washing&drying and results were analyzed & compared via Minitab. Mixture design analysis had been used on Minitab to analyze results. For each washing step, neither detergent nor softener were used, and hard water with water hardness 14 (in English degrees) was used. Also, 70% of machine was full (approxiamately 5 kg) in each washing &drying step. For drying step, 3rd level drying was used to obtain cupboard dryness for all t-shirts. For blended fabrics, mixed programme was used, for cotton fabrics cotton cupboard programme was used and for synthetic fabrics, synthetic drying programme was used. During testing, it was found that recycled polyester t- shirts dried poorly under the synthetic program and excessively under the cotton program. These results suggested that a new drying algorithm designed especially for recycled polyester textiles was required. Therefore, based on the results of the tests that were carried out, the ideal parameters for temperature, duration, and energy consumption for this algorithm were established. After conduction of all the washing& drying cycles and quality tests, t-shirts were dried in cot eco programme to investigate drying performance of this programme. According to test results, recycled polyester has the greatest fabric strength results while recycled cotton and their blends' quality became better after 3 washing and drying cycles. In terms of energy performance of drying programmes, it could be said that cotton cupboard uses the highest energy and with too much drying, it could affect quality performance of fabric adversely. Cot eco uses higher energy than mixed programme, yet clothes were still damp at the end of cot eco programme. Synthetic programme uses the lowest energy and it did not even dry the synthetic t-shirts, so a new drying algorithm had been developed in order to dry recycled polyester t-shirts while using less time and less energy, and this new programme is a shorter version of a cotton cupboard programme. It could be stated that the mixed program is the most suitable for all fabric types, as it is the most efficient option in terms of energy performance. Considering all these results, it is concluded that recycled cotton and recycled polyester can be used more extensively in textile production without compromising fabric quality. Furthermore, while the mixed program appears ideal for all fiber types, it is anticipated that new drying algorithms could be developed in the future based on the fiber type and fiber content used in garments. This master's thesis was supported by TUBITAK 2210-D programme with grant number 1649B022301111, and the author is grateful for this support.