Person: ÖMEROĞLU, SUNAY
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ÖMEROĞLU
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SUNAY
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Publication Dyeing and some fastness properties of novel perlite-containing polyester woven fabrics(Sage Publications Inc, 2022-03-01) Becerir, Behcet; BECERİR, BEHÇET; ÖMEROĞLU, SUNAY; Karaca, Esra; KARACA, ESRA; Mühendislik Fakültesi; Tekstil Mühendisliği Bölümü; 0000-0002-2655-2773; 0000-0003-1777-3977; AAS-8480-2020; AAH-1445-2021This article is focused on the comparison of dyeing, and washing and light fastness properties of conventional and novel perlite-containing polyester woven fabrics via color measurements. All the production processes for the regular and perlite-containing polyester filament yarns were the same. The fabrics were dyed with three medium level energy disperse dyes of different hues in order to observe the shade change caused by the intrinsic yellowness of the perlite-containing fabric. Dyeing and fastness properties of the dyed fabrics were evaluated by their corresponding lightness (L*), chroma (C*), color strength (K/S), and color difference (Delta E-ab*) results. The perlite-containing fabrics showed similar dyeing and fastness characteristics when compared with the regular fabrics. The perlite-added fabrics were dyed in darker color but had lower chroma values than the regular ones. The perlite-added fabrics also had better fastness results than the regular fabrics when the evaluation was performed in the group itself. Intrinsic yellowness of perlite-added fabrics must be taken into account for any attempt to dye the fabric to a pre-designed shade.Publication Effects of fiber cross-sectional shapes on tensile and tearing properties of polyester woven fabrics(Ege Üniversitesi, 2015-10-01) Karaca, Esra; Ömeroğlu, Sunay; Becerir, Behçet; KARACA, ESRA; ÖMEROĞLU, SUNAY; BECERİR, BEHÇET; Mühendislik Fakültesi; Tekstil Mühendisliği Bölümü; 0000-0003-1777-3977; 0000-0002-2655-2773; AAH-1445-2021; AAM-7071-2020; AAS-8480-2020Breaking load and elongation, and tearing load properties of two type fabrics (plain and twill) woven from polyester fibers having round, hollow round, trilobal and hollow trilobal cross-sectional shapes were investigated. The fabrics produced from full fibers had higher breaking elongation and tearing load values but generally lower breaking load values than the fabrics produced from hollow fibers. The highest breaking load value was obtained in twill fabric woven from filaments having hollow round cross-sectional shape, while the highest tearing load value was obtained in twill fabric woven from filaments having round cross-sectional shape. The fabrics constituting filaments with round cross-sectional shapes had the highest breaking elongation values It was concluded that the effect of fiber cross-sectional shape on breaking strength and on tearing strength differed from each other.Publication Comparative study on carded cotton yarn properties produced by the conventional ring and new modified ring spinning system(Inst Chemical Fibres, 2019-03-01) Buharalı, Gözde; Ömeroğlu, Sunay; ÖMEROĞLU, SUNAY; Mühendislik Fakültesi; Tekstil Mühendisliği Bölümü; AAM-7071-2020In this paper; the properties o yams which were produced by using a modified ring spinning system (ProSPIN (R)) and conventional ring spinning system were comparatively investigated. The modified spinning system which was used in yarn production has basically the characteristic of compact spinning system and is at present used especially in the production of mid-count yarns. In this study, conventional ring yarns and equivalent modified ring spun yarns were produced with different yarn counts and twists using 100% carded cotton raw material. Tests were conducted to determine the tensile, unevenness, imperfection and hairiness properties of the yarns. It was found that the modified ring spun yams showed considerable positive differences in some yarn properties compared with conventional ring yarns. The diffrrences in tenacity values were more evident especially in yams with lower twist coefficients, while differences in hairiness values were more so in finer yarns. Also the unification of two separate and compacted fibre strands during yarn formation ensures better values for both mass irregularity and IPI because of the doubling effect.Publication An investigation about bursting strength and pilling performance of knitted fabrics made from ring and compact yarns(Pamukkale Univ, 2005-01-01) Ömeroğlu, Sunay; ÖMEROĞLU, SUNAY; Mühendislik Fakültesi; Tekstil Mühendisliği Bölümü; AAM-7071-2020In this paper, bursting strengths and pilling tendencies of a series of single jersey fabrics made from both 100 % combed cotton ring and compact yarns are investigated. According to results, structural differences between ring and compact spun yarns play significant role on fabric properties. As a result, it was seen that fabrics knitted from compact yarns have higher bursting strength and lower pilling tendency than fabrics knitted from ring spun yarns.Publication Investigation of two-fold yarn properties produced as directly by using different systems in ring spinning(Pamukkale Üniversitesi, 2013-01-01) Ünal, Seda; Ömeroğlu, Sunay; ÖMEROĞLU, SUNAY; Mühendislik Fakültesi; Tekstil Mühendisliği Bölümü; AAM-7071-2020In this study, breaking strength, unevenness and hairiness properties of two-fold wool/ polyamide blended yarns which were produced directly by using Sirospun and two different compact siro systems were investigated. According to the test results, yarns produced by both two compact siro systems had statistically better quality properties than conventional Sirospun yarns. Statistically significant differences were not obtained between the properties of yarns produced by using two different compact siro systems.Publication Effects of yarn twist levels on percentage reflectance of cotton fabrics woven with various constructional parameters(Amer Assoc Textile Chemists Colorists-aatcc, 2015-01-01) Ömeroğlu, Sunay; Akgün, Mine; Becerir, Behçet; ÖMEROĞLU, SUNAY; AKGÜN, MİNE; BECERİR, BEHÇET; Uludağ Üniversitesi; 0000-0002-2655-2773; 0000-0002-1618-6562; AAG-9756-2021; AAM-7071-2020; AAH-1445-2021Percentage reflectance of plain, twill, and sateen fabrics woven from cotton yarns having various yarn counts and twist levels were presented. Yarn hairiness, fabric thickness, and fabric bulk density that changed with different twist levels were assessed with fabric percentage reflectance. All measured values changed between samples according to yarn twist levels in different ways. Percentage reflectance of fabric samples increased until yarns reached a certain twist level, then decreased with further yarn twist increases. This relationship between fabric percentage reflectance and yarn twist levels was more readily observed in less compact fabrics (fabrics having a low fabric cover factor, low fabric bulk density, and low yarn intersection numbers). Fabric bulk densities and fabric thickness values changed in accordance with yarn twist levels and fabric percentage reflectance.