Person: ÖZDEMİR, ÖZCAN
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
ÖZDEMİR
First Name
ÖZCAN
Name
5 results
Search Results
Now showing 1 - 5 of 5
Publication Effects of vacuum steaming processes on the properties of continuous and staple polyester yarns(Sage, 2015-07-01) Şardağ, Sibel; Özdemir, Özcan; ŞARDAĞ, SİBEL; ÖZDEMİR, ÖZCAN; Uludağ Üniversitesi/Mühendislik Mimarlık Fakültesi/Tekstil Mühendisliği Bölümü; 0000-0001-9177-0059; 0000-0003-2494-6485; B-1488-2019; AAY-8629-2021In this study, the effects of vacuum steaming process parameters on physical properties, tensile properties and twist liveliness values of spun and filament 100% polyester yarns were investigated. For this purpose, yarns having different twisting coefficients and different numbers were twisted, and afterwards they were exposed to vacuum steaming at different temperatures and for different durations. Linear density, hairiness, unevenness values, tensile properties and twist liveliness of these yarns were measured before and after vacuum steaming. The results obtained were assessed by means of COSTAT and SPSS statistical analysis programs and variation analysis, and Student-Newman-Keuls tests were carried out at 5% (0.05) level of significance. The results of this study indicate that the effects of vacuum steaming temperature and duration on tensile properties, unevenness, hairiness and twist liveliness of spun polyester yarns, and tensile properties and twist liveliness of filament polyester yarns, are statistically significant.Publication Vacuum steaming processes applied to yarns, its application fields and improvements(Pamukkale Üniversitesi, 2005-01-01) Özdemir, Özcan; Sardağ, Sibel; ÖZDEMİR, ÖZCAN; ŞARDAĞ, SİBEL; Uludağ Üniversitesi/Mühendislik Mimarlık Fakültesi/Tekstil Mühendisliği Bölümü; AAY-8629-2021; HVO-2051-2023The new techniques used today focus mainly on increases in production speed. For this reason yarns to be used in high speed machines is required to be of high quality. On the other hand high speed frequently causes the degree of yarn moisture to fall minimum level. This decreases in the degree of yarn moisture have negative effects on yarn strength. Since better moisture level increases the yarn strength, yarn is worked more efficiently in weaving and knitting. However each production step in textile plants causes tension in yarn and fibre. Yarns tend to snarl in order to relax themselves. Tension and snarling may lead to problems in the following proceses, thus decreasing productivity. Therefore, the moisture content of yarns should be increased and their tension should be eleminated. In this article we have studied vacuum steaming widely used to remedy above mentioned yarn problems, its application fields and new improvements in this field.Publication Influence of flock coating on the thermophysiological comfort properties of woven cotton fabric(Taylor & Francis Ltd, 2022-02-18) Kesimci, Mahmut Oğuz; Demirel, Hilal; Özdemir, Özcan; Kanık, Mehmet; KESİMCİ, MAHMUT OĞUZ; Demirel, Hilal; ÖZDEMİR, ÖZCAN; KANIK, MEHMET; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0002-4748-8395; 0000-0003-0560-1510; 0000-0003-2494-6485; 0000-0003-2317-7282; JTS-3559-2023; B-5851-2017; CNJ-0063-2022; HVO-2051-2023In flock coating, the fabric surface is coated with an adhesive, and flock fibers of a certain length and fineness are impinged and embedded on the adhesive. Embedded fibers form a pile structure on the surface, causing the process to find a wide range of applications. However, there has been no study on the comfort properties of the flock coated fabrics due to the inevitable decrease of the fabric permeability after adhesive coating. This study evaluates the flock fiber physical properties, adhesive coating ratio, and flocking duration on the comfort properties of flock-coated fabrics. Three different coating ratios, two different flocking durations, and four different flock fibers with different fineness and length were studied. Fabric samples were produced by electrostatic flock coating of the woven cotton base fabric. In addition to the experimental study, a mathematical model has been set up to predict the flock-coated fabric thermal resistance. Short (0.4 mm) and long (1.0 mm) flock fibers have assured 82% and 204% higher thermal resistance, respectively, compared to the base fabric thermal resistance of 7.37 (10(-3) m(2) K/W). The thermal resistance mathematical model results have been found to agree with the actual values with a correlation coefficient of 0.95. Compared to the base fabric, long flock fiber has provided a 249% increase in thermal resistance, with at most a 20% fabric mass increment and 24% relative water vapor permeability decrease. The findings indicate that flock coating can be utilized in cold-weather clothing.Publication Literature survey on abrasion problem in chenille yarns(Pamukkale Univ, 2006-01-01) Çeven, Erhan Kenan; ÇEVEN, ERHAN KENAN; Özdemir, Özcan; ÖZDEMİR, ÖZCAN; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0003-3283-4117; AAG-4653-2019Chenille yarns are traditionally used in the manufacture of furnishing fabrics, fashion knitwear, and as decorative threads in many types of broad and narrow fabrics. Chenille yarn has a very distinct weakness-it does not have very good inherent abrasion resistance. When the yarns are in use, clearly the abrasion resistance of the chenille yarn is crucially important. Either during further processing or during the eventual end-use, any removal of the effect yarn forming the beard will expose the ground yarns, which in turn will result in a bare appearance. To avoid this undesirable result, several options are available. Therefore, the studies on this area are about the investigation of the influences of some material types and machine parameters on the abrasion resistance of chenille yarns and fabrics produced with these yarns. In this paper, the experimental studies about the abrasion properties of chenille yarns in yarn, knitted and woven fabric forms are summarized.Publication Development and characterization of conductive textile (polyester fabric) for wearable electronics by using electroless metallization(Taylor & Francis Ltd, 2023-06-14) Hassan, Zuhaib; Atalay, Özgür; Kalaoğlu, Fatma; Ozat, Fatih Ahmet; ÖZDEMİR, ÖZCAN; Kesimci, Mahmut Oğuz; KESİMCİ, MAHMUT OĞUZ; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; B-5851-2017This paper investigated the development and characterization of conductive textured and non-textured polyester fabrics with various cross-sections. To impart conductivity on fabric structures, the electroless copper plating method was chosen. Electrical conductivity, thickness, electron scanning microscopy (SEM), microscopic morphology, and energy dispersive X-ray spectroscopy were used to characterize the deposition of copper nanoparticles on textured and non-textured polyester fabrics (EDX). SEM images revealed a thin film of uniform copper nanoparticle coating on textured and non-textured polyester fabrics. Electrical conductivity, wear resistance, thickness, and durability of conductive textured polyester fabrics were compared to non-textured conductive polyester fabrics. Electrical conductivity measurements show that both textured and non-textured polyester fabrics have good electrical conductivity values of 27 & omega;/cm, 85 & omega;/cm, 52 & omega;/cm, 9 & omega;/cm, 98 & omega;/cm, 133 & omega;/cm. When conductive polyester fabrics were tested for durability against washing and rubbing fastness, the textured polyester fabrics retained copper nanoparticles well by maintaining their electrical conductivity level after 250 abrasion and washing cycles, with best electrical conductivity values of 177 & omega;/cm and 29 & omega;/cm, respectively.