The Experts below are selected from a list of 177 Experts worldwide ranked by ideXlab platform

Gün, Ahu Demiröz - One of the best experts on this subject based on the ideXlab platform.

  • Dimensional and physical properties of socks made from reclaimed fibre
    'Informa UK Limited', 2014
    Co-Authors: Gün, Ahu Demiröz, Akturk H.n., Macit, Ayşe Şevkan, Alan Gonca
    Abstract:

    The purpose of this study is to compare the dimensional and physical properties of the socks made from the blend of reclaimed fibre and virgin polyester fibre with the similar socks made from virgin cotton fibre, together with the influence of incorporated elastane. The reclaimed fibre socks exhibit higher stitch density, mass, thickness and Pilling Tendency and lower air permeability than the cotton socks. Abrasion behaviours of the socks are assessed by measuring the mass loss and colour values after abrasion cycles. The mass loss values of the reclaimed fibre socks are found to be lower than those of the cotton socks after abrasion. Regarding the colour properties after abrasion, the reclaimed fibre socks reveal higher colour strength (K/S) values and lower colour difference (?E*) values. From the colour values after abrasion, it can be concluded that the reclaimed fibre socks lose their colour little less than the cotton socks. © 2014 © 2014 The Textile Institute.2013/TP005This work was financially supported by the Scientific Research Centre of Usak University [2013/TP005]. Their support is gratefully acknowledged

  • Dimensional, physical and thermal comfort properties of plain knitted fabrics made from modal viscose yarns having microfibers and conventional fibers
    'Springer Science and Business Media LLC', 2011
    Co-Authors: Gün, Ahu Demiröz
    Abstract:

    The dimensional, some physical and thermal comfort properties of the plain knitted fabrics having modal viscose microfibers in three different stitch lengths are investigated in comparison with the similar fabrics having conventional modal viscose fibers. The fabrics made from microfibers and conventional fibers exhibit different dimensional properties. The stitch density results and the dimensional constants calculated at the fully relaxed state reveal that the fabrics with microfibers tend to have lower shrinkage Tendency than those with conventional fibers. The statistical results show that the fiber type (or fiber fineness) and the stitch length affect the some physical properties and all of the thermal comfort properties of the fabrics significantly. The bursting strength values of the fabrics with microfibers are observed to be slightly higher than those of the fabrics with conventional fibers. However, the difference between the bursting strength values of these fabrics is found to be statistically unimportant. The fabrics with microfibers reveal lower thickness and air permeability and, higher Pilling Tendency than those with conventional fibers. It is also observed from the thermal comfort results that the fabrics made from microfibers have higher thermal conductivity, thermal absorptivity and maximum heat flux values and, lower thermal resistance and thermal diffusivity values. Because of the higher thermal absorptivity and maximum heat flux values, the fabrics from microfibers provide cooler feeling when compared with those from conventional fibers. © 2011 The Korean Fiber Society and Springer Netherlands.I would like to thank the Research Center of the Usak University for financially supporting this research. I also would like to thank Dr. Kemal Sengül and Ozgurel Textile Company in Usak in Turkey for performing the dyeing of the fabrics

Ahu Demiroz Gun - One of the best experts on this subject based on the ideXlab platform.

  • Dimensional and physical properties of socks made from reclaimed fibre
    The Journal of The Textile Institute, 2014
    Co-Authors: Ahu Demiroz Gun, Hatice Nur Akturk, Ayse Sevkan Macit, Gonca Alan
    Abstract:

    The purpose of this study is to compare the dimensional and physical properties of the socks made from the blend of reclaimed fibre and virgin polyester fibre with the similar socks made from virgin cotton fibre, together with the influence of incorporated elastane. The reclaimed fibre socks exhibit higher stitch density, mass, thickness and Pilling Tendency and lower air permeability than the cotton socks. Abrasion behaviours of the socks are assessed by measuring the mass loss and colour values after abrasion cycles. The mass loss values of the reclaimed fibre socks are found to be lower than those of the cotton socks after abrasion. Regarding the colour properties after abrasion, the reclaimed fibre socks reveal higher colour strength (K/S) values and lower colour difference (ΔE*) values. From the colour values after abrasion, it can be concluded that the reclaimed fibre socks lose their colour little less than the cotton socks.

  • Dimensional, physical and thermal comfort properties of plain knitted fabrics made from modal viscose yarns having microfibers and conventional fibers
    Fibers and Polymers, 2011
    Co-Authors: Ahu Demiroz Gun
    Abstract:

    The dimensional, some physical and thermal comfort properties of the plain knitted fabrics having modal viscose microfibers in three different stitch lengths are investigated in comparison with the similar fabrics having conventional modal viscose fibers. The fabrics made from microfibers and conventional fibers exhibit different dimensional properties. The stitch density results and the dimensional constants calculated at the fully relaxed state reveal that the fabrics with microfibers tend to have lower shrinkage Tendency than those with conventional fibers. The statistical results show that the fiber type (or fiber fineness) and the stitch length affect the some physical properties and all of the thermal comfort properties of the fabrics significantly. The bursting strength values of the fabrics with microfibers are observed to be slightly higher than those of the fabrics with conventional fibers. However, the difference between the bursting strength values of these fabrics is found to be statistically unimportant. The fabrics with microfibers reveal lower thickness and air permeability and, higher Pilling Tendency than those with conventional fibers. It is also observed from the thermal comfort results that the fabrics made from microfibers have higher thermal conductivity, thermal absorptivity and maximum heat flux values and, lower thermal resistance and thermal diffusivity values. Because of the higher thermal absorptivity and maximum heat flux values, the fabrics from microfibers provide cooler feeling when compared with those from conventional fibers.

Johanna Buchert - One of the best experts on this subject based on the ideXlab platform.

  • 672 TEXTILE RESEARCH JOURNAL Synergistic Effects of Trichoderma reesei Cellulases on the Properties of Knitted Cotton
    2016
    Co-Authors: Lea Heikinheihlo, Johanna Buchert
    Abstract:

    Cotton knitted interlock fabric is treated with purified Trichodernin reesei cellulases. The action of cellobiohydrolases I and I1 (CBH I and CBH 11) and endoglucanases I and I1 (EG I and 11), alone and in different combinations, i.e., endo-endo, endo-exo, and exo-exo, is evaluated for reducing sugars, solubilized oligosaccharides, weight loss, bursting strength, and Pilling Tendency. According to the results, there are clear differences between individual enzymes and their defined mixtures. There is no correlation between high weight loss and good Pilling results, and similarly, there is no correlation between weight and strength loss. Thus, the reduced Pilling Tendency can be obtained with significantly lower strength losses by tailoring the amount and type of different cellulases in the enzyme mixtures. The major component of cotton is cellulose, which is a polymer composed of anhydroglucose units joined by p-1,4-glucosidic bonds. The degree of polymerization (DP) of cotton cellulose may be as high as 14,000, but i

  • Synergistic Effects of Trichoderma reesei Cellulases on the Properties of Knitted Cotton Fabric
    Textile Research Journal, 2001
    Co-Authors: Lea Heikinheimo, Johanna Buchert
    Abstract:

    Cotton knitted interlock fabric is treated with purified Trichoderma reesei cellulases. The action of cellobiohydrolases I and II (CBH I and CBH II) and endoglucanases I and II (EG I and II), alone and in different combinations, i.e., endo-endo, endo-exo, and exo-exo, is evaluated for reducing sugars, solubilized oligosaccharides, weight loss, bursting strength, and Pilling Tendency. According to the results, there are clear differences between individual enzymes and their defined mixtures. There is no correlation between high weight loss and good Pilling results, and similarly, there is no correlation between weight and strength loss. Thus, the reduced Pilling Tendency can be obtained with significantly lower strength losses by tailoring the amount and type of different cellulases in the enzyme mixtures.

Levent Onal - One of the best experts on this subject based on the ideXlab platform.

  • Comparative study on the characteristics of knitted fabrics made of vortex-spun viscose yarns
    Fibers and Polymers, 2008
    Co-Authors: Hüseyin Gazi Örtlek, Levent Onal
    Abstract:

    Murata vortex spinning system is based on the air jet spinning system. The vast majority of previous works deal with the properties of vortex spun (VS) yarn and the spinning system. In this study, we investigated knitted fabrics from VS yarn in comparison with fabrics from ring (RS), compact (CS) and open-end rotor (OES) spun yarns made from viscose. The effect of yarn spinning system on dimensional and physical properties of knitted fabrics was explained with specific attention to fabrics from VS yarn. Shrinkage of fabrics from VS yarn has the lowest at widthwise direction, while having the highest at lengthwise direction. It is shown that the order of fabric spirality and twist liveliness for yarns from different spinning systems are quite similar. However, relation between loop shape factor and angle of spirality is inconsistent. Angle of spirality of fabrics from VS yarn is higher than fabrics from OES yarn, but lower than that of others. The bursting strength of fabrics from VS yarn is lower than that of those from RS and CS yarns and higher than that of those from OES yarn. From this study, it is also evident that fabrics from VS yarn have the lowest Pilling Tendency and highest resistance to abrasion.

  • Dimensional, Pilling, and Abrasion Properties of Weft Knits Made from Open-End and Ring Spun Yarns
    Textile Research Journal, 2002
    Co-Authors: Cevza Candan, Levent Onal
    Abstract:

    This paper focuses on the dimensional, Pilling, and abrasion properties of a series of plain jersey, lacoste, and two-thread fleece fabrics made from cotton ring and open-end spun yarns as well as from blend yarns (50/50 cotton/polyester, dyed). The results show that both structural differences and fiber type play a large part in determining the dimensions of these fabrics. It is apparent that the knits from blend yarns have a lower dimensional stability when compared to fabrics from 100% cotton ring and open-end spun yarns. Findings for the two-thread fleece fabrics suggest that the inlay yarn mainly governs their dimensional behavior in the widthwise direction. The Pilling Tendency of the test samples and their resistance to abrasion are evaluated with the ici Pilling box (at three different test revolutions) and the Martindale abrasion tester, respectively. In addition, an extensive SEM examination is used to study the effect of fiber type and repeated launderings on both Pilling development and the degree of fiber damage within fuzz assemblies. The results show that unlike plain jersey fabrics, lacoste fabrics perform very well, and that in general fabrics knitted from open-end spun yarns have a lower propensity to Pilling. In the case of the two-thread fleece structure, the samples from 100% cotton (i.e., both face and fleece yarn) open-end yarns have higher Pilling rates compared to FBOE (face yarn is cotton, fleece yarn is 50/50 PET/cotton) and FBB (both face and fleece yarn are 50/50 PET/cotton) fabrics. The SEM study reveals that for the same number of test revolutions, the degree of damage to fibers within the fuzz entanglements tends to increase with an increased number of launderings, and that the kind of damage varies from small cracks and fractures to slight flaking, depending on the fabric and yarn type. Note, however, that any damage occurring as a result of repeated launderings and Pilling tests is not as severe as that reported in the literature. The lacoste fabrics have the least resistance to abrasion.

Kumar A - One of the best experts on this subject based on the ideXlab platform.

  • A critical appraisal of Pilling on polyester worsted fabric
    NISCAIR-CSIR India, 1996
    Co-Authors: Sharma I C, Chatterjee K N, Mukhopadhyay A, Kumar A
    Abstract:

    122-126The effect of blend composition, linear density and twist factor of polyester-wool blended yarn on the Pilling Tendency of polyester worsted fabrics having the same nominal cover factor has been studied over different test revolutions. It is observed that the incidence of pills increases with increase in polyester content, fineness of weft thread and decrease in twist factor. At higher test revolutions, the polyester content increases in the pill with decrease in number of bigger pills. As the weft count becomes finer, bigger pills gradually decrease and medium and small pills show an increasing trend with increase in test revolutions for all the blends.