Person: KUT, YAŞAR DİLEK
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KUT
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YAŞAR DİLEK
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Publication Investigation of effects of protease enzyme produced by Bacillus subtilis 168 E6-5 and commercial enzyme on physical properties of woolen fabric(Taylor, 2019-06-04) Demirkan, Elif; Kut, Dilek; Sevgi, Tuba; Doğan, Meral; Baygın, Eren; DEMİRKAN, ELİF; KUT, YAŞAR DİLEK; SEVGİ, TUBA; Doğan, Meral; Baygın, Eren; Bursa Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Biyoloji Bölümü; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü; 0000-0002-5292-9482; 0000-0002-9059-0838; 0000-0002-7528-9529; AAG-7112-2021; AAH-4335-2021; ABI-4472-2020; CMN-9718-2022; CFF-0023-2022Wool is one of the most important fibers in textile industry, and has been commonly used for producing value added products due to its properties of lightness, warmth, softness, and smoothness. However, the special scale structure in wool cuticle can cause felting shrinkage of wool fabrics. Proteases have been widely used to modify the surface of wool to prevent wool felting, due to their ability to catalyze the hydrolysis of peptide bonds in wool scales. Although the treatment of wool with proteases was considered as an environmentally friendly technique to provide wool fabrics with shrink resistance properties, proteases exhibited low efficacy in removing the cuticle scales because of the highly cross-linked barriers. In this study, wool fabric was treated with protease enzyme obtained from novel isolated bacteria and commercial protease enzyme, and the results were compared. The tear strength, pilling changes in Delta E values, whiteness and yellowness values of wool were controlled. Results showed that treatment with Bacillus subtilis 168 E6-5 protease enzyme yielded improvements in the physical properties of wool fabric compared with commercial enzyme.Publication Thermal, chemical and mechanical properties of regenerated bacterial cellulose coated cotton fabric(Taylor, 2021-08-22) Kılıç, Mehmet; Ay, Emriye; Kut, Dilek; KUT, YAŞAR DİLEK; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü; 0000-0002-9059-0838; AAH-4335-2021Bacterial cellulose is a raw material that is used in many industrial areas such as textile due to its properties and an alternative to plant cellulose whose usage is increasing day by day. In this research, dissolved bacterial cellulose was used as a coating material. After the coating process, samples were immersed in three different coagulation baths to provide regeneration of the coated material. TGA, FTIR, SEM-EDX, air permeability, tensile test, thermal comfort (alambeta), and water vapor transmission (permetest) analyses were carried out to compare the mechanical, chemical, and thermal properties between raw fabric and treated fabrics. Because of chemical analysis, it was observed that the structures are similar to each other. In terms of thermal stability, it has been determined that the samples that have been coated are more durable than the raw fabric. The tensile test revealed that there was a decrease between 15.05% and 41,62% in the strength of coated materials. According to the results of air permeability, alambeta, and permetest, a decrease in air permeability values, an increase in relative water vapor permeability, and thermal conductivity values were observed with the increase of the remaining coating material in the fabric.Publication Color, fastness, and antimicrobial properties of wool fabrics dyed with Helichrysum Arenarium Subsp. Aucheri extract(Taylor & Francis, 2020-12-06) Cüce, Mustafa; Kılınç, Mehmet; Kılınç, Nur; Tekin, Aşkın; Kut, Dilek; KUT, YAŞAR DİLEK; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0002-9059-0838; AAH-4335-2021Natural dyestuffs are evaluated as innovative natural sources to color the fabric and give antibacterial properties in the textile industry. In this study, methanol extracts of Helichrysum arenarium subsp. aucheri were used as natural sources in wool fabric dyeing. Aluminum potassium sulfate (KAl(SO4)(2).12H(2)O), copper sulfate (CuSO4.5H(2)O), and iron sulfate (FeSO4.7H(2)O) metal salts were used in the pre-mordanting process. The dyeing process was carried out in mordant and non-mordant fabrics at 25% and 50% concentrations. In this experiment, fastness values are ranked between medium and good grades. The point that should be especially emphasized is that the un-mordanted and dyed samples' fastness values are acceptable. The disc diffusion method was applied to determine the antibacterial effect of extracts against Staphylococcus aureus ATCC 25923 and gram-negative Escherichia coli ATCC 25922. The methanol extract obtained from the ultrasonic water bath has shown the most powerful antibacterial effect against S. aureus ATCC 25923 with a 15.8 zone diameter. The dyed wool fabrics demonstrated excellent antimicrobial activity (reduction rates: w38.4e100) against two different bacteria according to AATCC 100 method.Publication Development of multifunctional cotton fabric via chemical foam application method(Sage Publications Ltd, 2019-10-30) Başyiğit, Zeynep Ömeroğulları; Hauser, Peter; Kut, Dilek; KUT, YAŞAR DİLEK; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi; 0000-0002-9059-0838; AAH-4335-2021Nowadays, the methods and techniques used in the textile industry are required to be environmentally friendly, and water and energy saving. In addition to these, they should transfer more than one functionality, in other words give multifunctionality to the textile material with reliable and sufficient results in terms of efficiency and permanence. With the increase in and diversification of today's industrial requirements, one functionality on the fabric may be insufficient to meet the requirements, and therefore the subject of multifunctionality holds an important place in the textile industry. Therefore, in this study flame retardant, antibacterial and water-repellent, single-layered multifunctional 100% cotton fabrics with different functionalities on different sides (back and face surfaces) of the fabric were obtained via a chemical foam application method, which has many advantages compared with conventional methods. In some of the experimental parts, impregnation and foam application methods were combined in the process in order to optimize the multifunctionality properties of the fabrics. In order to indicate the performance test of cotton fabric, vertical burning test, contact angle test, antibacterial test against Gram positive and Gram negative bacteria, color spectrum analysis and tearing strength test were carried out while, in terms of characterization tests, Fourier transform infrared (attenuated total reflectance) and scanning electron microscope analyses were performed. According to the test results, the flame retardancy effect of the samples was improved significantly while antibacterial results showed a 99% reduction of bacteria and the finished fabrics demonstrated improved water repellency with contact angles up to 125 degrees. In addition, the functionalities were durable up to 50 washing and 50 drying cycles.Publication Investigation of the bee-repellent properties of cotton fabrics treated with microencapsulated essential oils(Sage, 2019-04-01) Eyüpoğlu, Şeyda; Kut, Dilek; Girişgin, Ahmet Onur; Eyüpoğlu, Can; Özüiçli, Mehmet; Dayıoğlu, Habip; Civan, Mustafa; Aydın, Levent; KUT, YAŞAR DİLEK; GİRİŞGİN, AHMET ONUR; ÖZÜİÇLİ, MEHMET; AYDIN, LEVENT; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Parazitoloji Anabilim Dalı; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü; 0000-0002-0020-2708; 0000-0002-9059-0838; AAH-4335-2021; B-5286-2017; FQC-4674-2022; HLG-4450-2023In this study, to produce single-use bee-repellent fabrics, a variety of essential oils were encapsulated with gum arabic wall material at a 1:5 ratio of wall to the core substance. The following core substances were used: lavender oil, laurel oil, fennel oil, N, N-diethyl-3-methylbenzamide (DEET), lavender + laurel oil, lavender + fennel oil, laurel + fennel oil, lavender + fennel + laurel oil, lavender oil + DEET, fennel oil + DEET and laurel oil + DEET. Lavender, fennel and laurel oils were analyzed by high-performance liquid chromatography. In this context, 11 different microcapsules were produced. After the microencapsulation process, the microcapsules were analyzed with a light microscope and by Fourier transform infrared spectroscopy. Furthermore, an image processing application was developed and implemented to determine the particle size distribution of the microcapsules. After the analysis of the microcapsules, cotton fabric samples were treated with the microcapsules. In order to analyze the microcapsules on the fabric samples, scanning electron microscopy (SEM) was used. To analyze the bee-repellent abilities of the fabric samples, 12 different measurement cabinets made of pine tree and glass were produced. According to the results, lavender and fennel oils can be used as bee-repellent alternatives to DEET in beekeeping.Publication The investigation of the effects of plasma treatment on the dyeing properties of polyester/viscose nonwoven fabrics(Elsevier Science, 2015-01-01) Canbolat, Şeyda; Kılınç, Mehmet; Kut, Dilek; Şener, S.; Saridoğan, E.; Staub, S.; KUT, YAŞAR DİLEK; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; Şener, S.; Sarıdoğan, E.; Staub, S.; 0000-0002-9059-0838; AAH-4335-2021In this study, Polyester/Viscose (PET/CV) nonwoven fabrics were treated with oxygen plasma application. The plasma application was carried out for 1and 10 minutes at low frequency. After then, the samples were dyed with disperse dyes. Where same samples were dyed with carriers, the others were dyed without carriers. Finally, the effects of plasma treatment on dyeing properties of PET/CV nonwoven fabrics were investigated at 3% darkness. The aim of this study is that the effect of hydrophility caused by the plasma application on dyeability properties of samples was investigated.Publication The evaluation with statistical analyses of the effect of different storage condition and type of gas on the properties of plasma treated cotton fabrics(Elsevier Science, 2015-01-01) Kılınç, Mehmet; Canbolat, Şeyda; Eyüpoğlu, Can; Kut, Dilek; Şener, S.; Sarıdoğan, E; Staub, S.; KUT, YAŞAR DİLEK; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; Sener, S.; Saridogan, E,; Staub, S.; 0000-0002-9059-0838; AAH-4335-2021In this study, cotton fabric was treated with oxygen, nitrogen and argon plasma application. The plasma application was carried out for 10 minutes at low frequency. Firstly, contact angle of plasma treated samples was measured at the end of plasma treatment. The results showed that the plasma treatment causes to increase the hydrophility of samples. Moreover, it was seen that the type of gas affects the hydrophilic properties of samples. After then the samples were left during 1 month with different conditions which were under normal condition and covered with aluminum foil. Finally, the contact angle of plasma treated samples was measured after 1 month in order to determine the durability effect of plasma treatment on properties of cotton fabric. After the contact angle measurements, the results were evaluated with statistical analyses in terms of the type of gas and storage conditions of plasma treated samples. The results demonstrated that the storage conditions and type of gas affect the hydrophilic properties of plasma treated cotton fabric after 1 month.