Browsing by Author "AKGÜN, MİNE"

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A research on effect of surface treatment conditions on flammability and water repellency properties of drapery fabrics produced from micro polyester yarns
(Taylor & Francis, 2020-03-05) Gunaydin, Gizem Karakan; Ceven, Erhan Kenan; ÇEVEN, ERHAN KENAN; Gurarda, Ayca; GÜRARDA, AYÇA; Akgun, Mine; AKGÜN, MİNE; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0003-3283-4117; AAG-4653-2019; AAG-9756-2021
Flame retardancy and water repellency are frequently applied finishing processes for drapery fabrics. These two treatments should require special attention when they are applied consecutively. This research aims to investigate the effect of sequential finishing processes by utilizing of different flame retardant chemical ratio (0, 60 and 90 g/l) and fluorocarbon based water repelling substance ratio (0, 10 and 30 g/l) on hydrophobic, flammability, air permeability and stiffness properties of the drapery fabrics. According to the results of statistical analyses, it was determined that fabric burning behaviour, air permeability and stiffness properties were significantly influenced from the process types with different finishing substance ratios and from the weft yarn density as well as from the interaction of process type and weft yarn density at 0.05 significance level. Additionally, process type was a significant factor on water repellency of drapery samples however weft yarn density and the interaction of weft yarn density and the process type were not influential factors on water repellency at significance level of 0.05. For both warp and weft fabric directions, lowest damage zone at the length and width with the ignition source was obtained from the samples which were only treated with flame retardancy process without water repellency (90-0 coded process). The most satisfying results in terms of water repellency were obtained from the samples treated with 60-30 coded process where 60 g/l FR and 30 g/l water repellent chemical substances were utilized respectively. Drapery fabrics treated with 60-0 coded process revealed the best windproof feature indicating the lowest air permeability.
Assessing the effect of measurement parameters on surface roughness values of polyester woven fabric structures
(Ege Üniversitesi, 2015-01-01) Akgün, Mine; Becerir, Behçet; Alpay, Halil Rıfat; AKGÜN, MİNE; BECERİR, BEHÇET; Alpay, Halil Rıfat; Uludağ Üniversitesi/Mühendislik Fakültesi; 0000-0002-2655-2773; AAG-9756-2021; AAH-1445-2021; CBU-3381-2022; ENF-8870-2022
This paper focused on the determination of the accurate measurement parameters of surface roughness of woven fabric structures. Surface roughness measurements were conducted on plain, twill and satin fabric samples woven with the same yarns in warp and weft directions with the same yarn densities in sub-groups. Roughness parameter of arithmetic average height (mean height) (Ra) was measured in the directions of warp, weft and diagonal (45o to the crossing axis of warp and weft) on front and back sides of fabric samples. It was concluded that surface roughness properties of woven fabrics changed considerably according to measurement parameters because of the anisotropic structure of fabric surfaces. Additional parameters which enable the characterization of surface roughness could be researched and determined with regard to fabric constructional parameters.
Assessment of the effect of fabric constructional parameters on surface roughness of wool fabrics
(Taylor, 2015-08-03) Akgün, Mine; AKGÜN, MİNE; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü,; AAG-9756-2021
Surface roughness properties of wool fabrics are one of the important parameters of clothing quality and hand feeling. This paper presents a comparison between surface roughness characteristics of wool fabrics produced from different constructional parameters such as warp and weft yarn density, weft yarn count, and weave pattern. Roughness values of fabrics were affected by constructional parameters and the effects were related to fabric cover, fabric thickness, and crimps of yarns in fabric structure. A general overview of the results showed that surface roughness of wool fabrics decreased and the effect of changes in structural construction decreased as cover of fabrics increased.
Effect of different yarn combinations on auxetic properties of plied yarns
(Walter, 2021-10-15) Akgün, Mine; Eren, Recep; Süvari, Fatih; Yurdakul, Tuğba; AKGÜN, MİNE; EREN, RECEP; SÜVARİ, FATİH; Yurdakul, Tuğba; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü; 0000-0001-5708-7993; N-1770-2019; CBU-3381-2022; CPO-1051-2022; GIA-1705-2022
This study presents the effects of a novel plied yarn structure consisting of different yarn components and yarn twist levels on the Poisson's ratio and auxetic behavior of yarns. The plied yarn structures are formed with bulky and soft yarn components (helical plied yarn [HPY], braided yarn, and monofilament latex yarn) and stiff yarn components (such as high tenacity [HT] and polyvinyl chloride [PVC]-coated polyester yarns) to achieve auxetic behavior. Experimental results showed that as the level of yarn twist increased, the Poisson's ratios and the tensile modulus values of the plied yarns decreased, but the elongation values increased. A negative Poisson's ratio (NPR) was obtained in HT-latex and PVC-latex plied yarns with a low twist level. The plied yarns formed with braid-HPY and braid-braid components gave partial NPR under tension. A similar result was achieved for yarns with HT-latex and PVC-latex components. Since partial NPR was seen in novel plied yarns with braided and HPY components, it is concluded that yarns formed with bulky-bulky yarn components could give an auxetic performance under tension.
Effect of fabric layers on whiteness and yellowness indices of some polyester fabrics woven with different constructional parameters
(Walter de Gruyter, 2015-06-01) Akgün, Mine; AKGÜN, MİNE; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; AAG-9756-2021
This paper focuses on the assessment of whiteness indices (WI) changes that occurred in white polyester fabrics according to different fabric layers. Yellowness indices (YI) were also assessed with the WI of fabric samples. White polyester fabrics having different constructional parameters were used, the results showed that WI of polyester fabrics increased up to a certain layer of fabric depending on constructional parameters and compactness of fabric. After a certain layer, WI of fabrics remained almost constant or steeply decreased. YI changed in good relation with whiteness changes. The results showed that the suitable number of fabric layer could be determined for WI measurements according to the compactness and to the structural parameters of the fabric samples. The suitable choice of the fabric layers for whiteness measurement depended on fabric constructional properties and could be made by considering the certain layer number, which could be obtained at the point of the maximum value of whiteness.
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-1445-2021
Percentage 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.
Investigation of auxetic performance and various physical properties of fabrics woven with braid yarns
(E.u. Printing And Publishing House, 2022-01-01) Akgün, Mine; SÜVARİ, FATİH; AKGÜN, MİNE; EREN, RECEP; Eren, Recep; Akgün, Mine; Yurdakul, Tuğba; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Genel Cerrahi Anabilim Dalı.; 0000-0001-5708-7993; N-1770-2019
In this study, the auxetic performance and various physical properties of fabrics woven with braid yam were examined. Fabrics were woven in plain weave with conventional warp and braid weft yarn. Experimental results showed that fabrics woven with braid weft yarn exhibited an auxetic behavior by giving Negative Poisson's Ratio (NPR) up to a certain elongation value under tension in the warp direction. In addition, it was observed that the NPR of fabric was affected by the thickness of the braid yam and the tightness (compactness) of the fabric. It was found that the use of braid yam in woven fabric improved various physical properties such as tensile strength, thermal resistivity and abrasion resistance. Use of braid yarns increased the tensile strength in the weft direction where braid yams were used, increased thermal resistivity values at the fabric woven with thick and bulky braid yams and also increased abrasion resistance.
Investigation of the comfort properties of traditional woven fabrics with different structural parameters
(Inst Natl Cercetare-dezvoltare Textile Pielarie-bucuresti, 2020-01-01) Günaydin, Gizem Karakan; Akgün, Mine; AKGÜN, MİNE; Gürarda, Ayca; GÜRARDA, AYÇA; Çeven, Erhan Kenan; ÇEVEN, ERHAN KENAN; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Anabilim Dalı.; 0000-0003-3283-4117; AAG-4653-2019; AAG-9756-2021
Turkish traditional Buldan weavings are known as special fabrics in terms of providing comfortable clothes which are known to be natural and healthy in Denizli. Turkey. The research presented in this paper assesses the effects of different fabric structural parameters of Buldan fabrics on comfort properties such as thermal resistance, thermal absorptivity. water vapour permeability and air permeability. Five different Buldan fabrics woven with different fabric structural parameters were produced. According to test results, cotton/Tencel Buldan fabrics indicated similar comfort properties with the 100% cotton Buldan fabric properties. Additionally the lowest thermal absorptivity was observed from 100% cotton Buldan fabrics which give the warmth feeling among the evaluated samples.
Investigation of the effect of pique weave on auxetic performance and related fabric properties
(Taylor, 2021-09-22) Akgün, Mine; Eren, Recep; Süvari, Fatih; Yurdakul, Tuğba; AKGÜN, MİNE; EREN, RECEP; SÜVARİ, FATİH; Yurdakul, Tuğba; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü; Bursa Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Tekstil Mühendisliği; 0000-0001-5708-7993; N-1770-2019; CBU-3381-2022; GIA-1705-2022
Re-entrant structures are known to perform an auxetic effect. It was aimed in this paper to investigate the Poisson's ratio of the woven pique structures because of the re-entrant lozenge effect of the weave. Sound absorption, air permeability, and synclastic properties of the fabrics concerning the auxetic properties of pique structures were also examined. In evaluating the synclastic behavior, the drape ability and bending rigidity of the fabrics were assessed. Pique weave fabrics were subjected to tensile tests, and the changes in fabric unit cell at different tensile strains were observed in the warp and weft directions. Experimental results showed that the auxetic effect was produced in the warp direction. A high negative Poisson's ratio (NPR) was obtained in cotton pique fabrics under low elongation values. It was observed that the yarn floating lengths and the yarns intersecting region widths forming the re-entrant lozenge pattern had effects on fabrics' NPR.
Investigation of the friction coefficients and surface roughness properties of denim fabrics after abrasion
(A.B. Basım ve Yayınevi, 2023-01-01) Kara, Gizem; Akgün, Mine; AKGÜN, MİNE; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü; JJP-6065-2023
The abrasion behavior of denim fabrics could be affected by fabric surface properties (surface friction coefficient and roughness) depending on fabric structural parameters. This work aimed to investigated the friction coefficients and surface roughness properties of denim fabrics woven with different structural parameters after abrasion. In general, while the abrasion process reduced the fabric friction coefficients during the initial abrasion cycles, the surface's friction coefficient increased as the number of abrasion cycles increased. However, due to the increased abrasion cycles, there was a steady decline in the roughness values of the fabric surfaces. Denim fabrics were woven with a 3/1 twill weave pattern. When the effect of the fabric structural parameters on fabric friction coefficient and roughness values were evaluated, the yarn count (Nm), yarn density, and fabric cover factor showed negative correlation coefficients. In contrast, the thickness, unit weight, and bulk density of fabric showed positive correlation coefficients.
Research on the method for controlling the liquid absorptivity behavior of polyester textile materials
(Sage Publications Inc, 2022-05-01) Akgün, Mine; KANIK, MEHMET; AKGÜN, MİNE; Kanık, Mehmet; Seçmen, Sude; Macit, Miray; Gülşen, Esma; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; JTS-3559-2023
Besides the advantages of polyester materials, such as ease of production, usage, and maintenance, the hydrophobic properties could cause disadvantages. Applying hydrophilic finishing to the polyester product, its liquid transmission properties could be improved, and better comfort provided to the user. This study aimed to investigate the liquid absorptivity properties (vertical wicking, water vapor permeability, and drop test) of the fabric given hydrophilic properties by applying a partial hydrophilic process on a 100% polyester textile surface. It aimed to transfer the hydrophilic finishing agent to the polyester product using a printing method other than the padding method. In the printing application, 100% open, striped (50% open - 50% closed), continued honeycomb (65% open - 35% closed), and non-continued honeycomb (35% open - 65% closed) pattern screens were used. The liquid transmission properties of fabrics were evaluated by changing the ratio of the hydrophilic treatment applied to the fabric surface via with the printing method. In terms of the applicability of the printing method as an alternative to the impregnation method in order to achieve decreased chemical consumption, it was aimed to investigate whether the method of giving hydrophilic features by the printing method could create an alternative to the padding method. The results showed that the liquid transmission properties of fabrics could be controlled and improved by the printing method depending on the proportions of the hydrophilic and hydrophobic surface areas. In addition, it was observed that the liquid transmission properties of the fabrics vary depending on whether these areas are continued or non-continued.
The effect of graphene coating on surface roughness and friction properties of polyester fabrics
(Kaunas Univ Tech, 2021-01-01) Manasoglu, Gizem; Celen, Rumeysa; Akgün, Mine; Kanik, Mehmet; Manasoglu, Gizem; MANASOĞLU, GİZEM; Celen, Rumeysa; ÇELEN, RUMEYSA; Akgün, Mine; AKGÜN, MİNE; Kanik, Mehmet; KANIK, MEHMET; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0002-1504-8694; 0000-0002-2972-8295; JTS-3559-2023; JHT-0825-2023
In this article, the surface roughness and friction coefficient values of graphene coated fabrics were examined. Fabrics were coated with three different graphene concentrations (5 %, 10 % and 20 %) with the knife-over-roll principle. The surface roughness of samples was measured by Accretech Surfcom 130A. Various surface roughness parameters of the coated fabrics were evaluated. Static and kinetic friction coefficients of coated fabrics were measured by Labthink Param MXD-02 friction tester using the standard wool abrasive cloth. It was observed that the coating concentration affected the frictional and roughness properties of fabrics. Experimental results showed that fabric surface roughness and friction coefficient values decreased significantly, especially at 20 % concentration. It was concluded that the coated fabrics produced could be used in applications such as anti-wear clothing.
Usage of proportions method for predicting percentage reflectance of woven structures in fabric design
(Natl Inst Science Communication-niscair, 2015-09-01) Akgün, Mine; Becerir, Behçet; Alpay, Halil Rıfat; AKGÜN, MİNE; BECERİR, BEHÇET; Alpay, Halil Rıfat; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği; 0000-0002-2655-2773; AAH-1445-2021; AAG-9756-2021; CBU-3381-2022; ENF-8870-2022
Effects of fabric constructional parameters on the prediction of percentage reflectance of woven polyester fabrics for different weft yarn densities have been investigated considering the same yarn count and weave pattern. Relationship among weft yarn density, fabric bulk density, fabric cover factor and percentage reflectance has been studied using the proportions method. The relationship between measured and proportionally predicted percentage reflectance values shows that proportional prediction method, according to fabric cover factors and using the same yarn count and the weave pattern but different yarn densities, gives the closest results to the measured ones. This could be used in estimation of fabric percentage reflectance for fabric design. Fabrics with different constructional parameters but having the same percentage reflectance could be produced by using proportions method under the conditions when appropriate beginning parameters are selected along with the fabric cover factors.