Browsing by Author "Merdan, Nigar"
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Item The effect of dyeing properties of fixing agent and plasma treatment on silk fabric dyed with natural dye extract obtained from Sambucus Ebulus L. Plant(Elsevier, 2015) Dayıoglu, Habip; Merdan, Nigar; Canbolat, Seyda; Şener, S.; Sarıdoğan, E.; Staub, S.; Kut, Dilek; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0002-9059-0838; AAH-4335-2021In this study, the natural dye extracted from the fruits of Sambucus Ebulus L. (Dwarf Elder) was used to dye silk fabric. Prior to the dyeing process, the samples were exposed to oxygen plasma pre-treatment at low frequency for 1 and 5 minutes. Following the plasma pre-treatment, the samples were dyed with the natural dye by the use of conventional and microwave dyeing methods. After dyeing procedure, the samples were treated with three different fixing agents. Finally, the effect of plasma pre-treatment and microwave energy, and type of fixing agent as a dyeing procedure on colour fastness to light, rubbing and washing and also the colour strength of the samples were investigated. According to the results, the increase on plasma treatment time and microwave energy increased the colour strength of samples. The fixing agent treatment did not affect much as the colour fastness properties of dyed samples.Item The effect of plasma treatment on the dyeability of silk fabric by using Phytolacca Decandra L. natural dye extract(Ege Üniversitesi, 2016-07-25) Dayıoğlu, Habip; Merdan, Nigar; Eyüpoğlu, Şeyda; Kılınç, Mehmet; Kut, Dilek; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; AAH-4335-2021; 55027507400The aim of this study is that plasma treatment effect on dyeability properties of silk fabric with natural dye is investigated. For this purpose, in this study, silk fabric was dyed by the conventional method with natural dye extracted from Phytolacca Decandra L. Before the dyeing process, the sericin on silk fabric was removed. After then, plasma treatment was applied the samples with using oxygen and nitrogen gas for 1, 5 and 10 minutes at low frequency. Furthermore, plasma treated samples were mordanted with potassium aluminum sulfate before the dyeing process. After the dyeing process, colour strength, colour fastness, surface properties, moisture absorption, chemical groups and tensile strength of the dyed samples were investigated. According to the results, the plasma treatment and mordanting process caused to improve the colour yields. The scanning electron microscope images showed that the plasma treatment causes microcracks on the surface of the silk fiber. After the plasma treatment, the hydrophility of samples increased. Moreover, plasma treatment creates microcracks on the silk fiber surface, resulting tensile strength decreases.Item The effects of perlite concentration and coating thickness of the polyester nonwoven structures on thermal and acoustic insulation and also electromagnetic radiation properties(Kaunas Univ Tech, 2018) Eyüpoğlu, Şeyda; Dayıoğlu, Habip; Merdan, Nigar; Kılınç, Mehmet; Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Tekstil Mühendisliği Bölümü.; AAX-5854-2020; 57189235960In this study, the improvement of the thermal and acoustic insulation and also electromagnetic radiation properties of polyester (PET) nonwoven fabric (NWF) with 180 g/m(2) weight was investigated. For this purpose, PET NWF was coated with perlite stone powder having 210-590 mu m particle size using polyurethane (PU) based coating. Five different concentrations from 1 to 5 % of perlite stone powder were applied to the surface of PET NWF having five different thicknesses. And then the effect of perlite concentration and its thickness to thermal, acoustic and electromagnetic radiation properties were studied. It was found that the addition of perlite stone powder increased the thermal and acoustic insulation properties of PET NWF. Furthermore, the addition of perlite stone powder does not affect the electromagnetic radiation properties of samples.Item Investigation of the effects of pumice stone powder and polyacrylic ester based material on thermal insulation of polypropylene fabrics(Ege Üniversitesi, 2013-10-18) Canbolat, Şeyda; Dayıoǧlu, Habip; Merdan, Nigar; Kut, Dilek Toprakkaya; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; AAH-4335-2021; 55027507400This study has aimed at the development of thermal insulation and adhesion properties of polypropylene (PP) fabric. The texture PP weft yarn, the texture weft yarn produced from hollow PP fiber and the nonwoven produced from PP fiber were used as three different raw materials, each of which was one-side coated with the mixture containing polyurethane and pumice stone powder with different concentrations in order to improve thermal insulation properties. Then the other sides of these fabrics were coated with polyacrylic ester based material so as to improve adhesion behavior of the fabrics. Finally, heat transfer coefficients of each fabric were analyzed in accordance with fabric type, concentration of pumice stone powder and polyacrylic ester based material along with adhesion properties. The results demonstrated that the increase in the concentration of pumice stone powder and the use of polyacrylic ester based material caused the decrease in the thermal conductivity coefficients. In addition, the use of polyacrylic ester based material brought in adhesion properties to fabrics in order for the ability to adhere these fabrics onto any surface.