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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Textile Science and Engineering
Journal Basic Information
Journal DOI :
The Korean Fiber Society
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Volume & Issues
Volume 51, Issue 6 - Dec 2014
Volume 51, Issue 5 - Oct 2014
Volume 51, Issue 4 - Aug 2014
Volume 51, Issue 3 - Jun 2014
Volume 51, Issue 2 - Apr 2014
Volume 51, Issue 1 - Feb 2014
Selecting the target year
Characteristic Changes in Vectran
Fibers Treated with Heat, HCl, and NaOH
Baek, Young Mee ; An, Seung Kook ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 213~221
DOI : 10.12772/TSE.2014.51.213
In this study, research was conducted on
fibers (highly heat resistant, high strength, lightweight industrial fibers) to determine their suitability for use in the development of hybrid wires and cables. Vectran fibers were heat-treated to various temperatures and treated with HCl and NaOH solutions under various conditions. The effects of heat, HCl, and NaOH treatment on the creep behaviors, mechanical properties, and surface properties of Vectran fibers were examined. X-ray diffraction (XRD) analysis was used to investigate crystallinity changes; while Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were used to analyze chemical structure changes resulting from degradation. Analysis showed that the mechanical properties and crystallinity of Vectran fibers changed significantly by treatment at temperatures greater than
. Although HCl treatments did not cause significant changes, NaOH treatments resulted in considerable changes in the surface and mechanical properties and crystallinity. FT-IR and XPS analyses indicated that the degradation resulted from the hydrolysis of ester bonds in the fibers.
Grafting of Poly(methacrylic acid) onto Polyethylene Powders via Photoinitiated Reactions and Characterization of PE-g-PMA
Kim, Ji Hoon ; Kim, Young Ho ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 222~229
DOI : 10.12772/TSE.2014.51.222
Grafting poly(methacrylic acid) (PMA) onto polyethylene (PE) powders using a photoinitiated reaction with UV irradiation was carried out, and the effects of PMA grafting on the thermal and surface properties of PE were characterized. The PE-g-PMA powders obtained were analyzed by FT-IR spectroscopy, zeta size analysis, thermogravimetric analysis, and differential scanning calorimetry. PE-g-PMA films were prepared by melt pressing the powders and then analyzed by scanning electron microscopy and contact angle measurement. The hydrophilicity of the PE-g-PMA films increased on increasing the degree of grafting. The heat of melt crystallization, heat of melting, melt-crystallization temperature, and melting temperature of PE-g-PMA decreased with increase in the degree of grafting. This was attributed to the PMA chains hindering the crystallization of PE.
Analytical Approximation of Relaxation Time Spectrum from Dynamic Creep Compliance
Choi, Joong Hwan ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 230~234
DOI : 10.12772/TSE.2014.51.230
The relaxation time spectrum is a very effective parameter for transforming material functions even with a limited amount of data. The spectrum also helps in understanding the relaxation behavior of polymers at the molecular scale. In this study, a relaxation time spectrum based on Marin-Graessley's dynamic compliance model was calculated using Fuosso-Kirkwood's complex analysis. The resulting model could successfully describe the viscoelastic behavior of mono-disperse polystyrene. However, it was clear that a more effective numerical analysis method was needed to obtain more accurate parameter values.
Theoretical Investigation of the Torque Twists Generated by Friction
Lim, Jung Ho ; T., Ganbat ; Huh, You ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 235~243
DOI : 10.12772/TSE.2014.51.235
This research comprises a theoretical investigation of the bundle twists created by the bundle thickness distribution while a bundle rotates by frictional force. The torque from the thickness differentials generates the twists of interest (i.e., the resulting rotation bundle differentials found in the friction area). Therefore, a theoretical model describing the dynamics of the twists per length was derived by applying continuous torque. The temporal bundle thickness is also considered. Using the model, the temporal profiles and spatial distributions of the torque twists are characterized. Under an arbitrarily chosen condition that allows simple interpretation of the torque twist characteristics, the governing equation system consisting of the model for the temporal distributions of the bundle radius on the friction drum surface and the model for the dynamic torque twists is solved, and the generation mechanisms of the torque twists are characterized. Results show that the torque twists propagate along the bundle axis in the form of a moving wave during the short time when the bundle first passes through the friction zone. After the bundle reaches a steady state, the torque twists increase very fast and then slow down as the bundle is moved by the take-up operation. Thus, the central area around the bundle axis becomes highly twisted by the superposition of the torque twists. This is because the input fleece fibers at the center accumulate for a longer distance than for the area near the bundle surface. However, at the exit of the friction area, the number of torque twists is almost zero because there is no accumulation distance for the torque twists to occur. This indicates that the torque twists are distributed with respect to the radial direction. This arc of torque-twist distribution can be described by a reciprocal relationship with respect to the radial position of the bundle cross-section.
Preparation and Characterization of Water-Resistant Starch/PVA Blends
Kim, Seo-Yeon ; Kim, Chu-Ja ; Chung, Kyung-Ho ; Hong, Young-Keun ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 244~251
DOI : 10.12772/TSE.2014.51.244
Biodegradable films made of plasticized starch/poly(vinyl alcohol) blends were crosslinked under ultraviolet irradiation for between 1 and 60 min in air at room temperature in the presence of sodium benzoate and glutaraldehyde. The crosslinking effect was evaluated from the tensile strength, gel content, and FT infrared spectrum of each formulation. The results show that by using photoinitiators and plasticizers, the strength and water resistance of the starch/PVA blends could be improved.
Preparation and Properties of Poly(ethylene terephthalate)/Nylon 6 Alloy Fibers Using Epoxy as a Reactive Compatibilizer(II) -Preparation and Properties of Alloy Fibers-
Min, Byung Gil ; Lim, Mok Keun ; Lee, Kwang Sang ; Yu, Yeong-Chool ; Han, Jae Sung ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 252~258
DOI : 10.12772/TSE.2014.51.252
The preparation of polymer alloys from immiscible blends of poly(ethylene terephthalate) (PET) and nylon 6 was investigated using epoxy as a reactive compatibilizer during melt compounding. The domain size of nylon 6 in the PET matrix could be controlled to the submicron level by addition of 0.5-2.0 wt% epoxy to the blends. Melt spinning of the alloys were successfully performed in a pilot scale. The alloy fibers containing 5-10 wt% nylon 6 exhibited reasonable mechanical properties, with up to 3 g/d tenacity and 35% elongation. Moreover, the alloy fibers showed improved moisture absorption properties compared with that of neat PET fibers.
Synthesis and Thermal Cyclization of Fluorine-Containing Polyhydroxyamides
Park, Chae Won ; Kang, Chan Sol ; Paik, Min Jung ; Baik, Doo Hyun ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 259~264
DOI : 10.12772/TSE.2014.51.259
We have synthesized four kinds of polyhydroxyamides (PHAs) via low-temperature solution polymerization of 2,2-bis(3-amino-4-hydoxyphenyl)hexafluoropropane or 3,3'-dihydroxybenzidine with isophthaloyl chloride or terephthaloyl chloride in N,N-dimethylacetamide and 1-methyl-2-pyrrolidone, respectively. The chemical structures of the synthesized PHAs and the polybenzoxazoles(PBOs) obtained by heat-treatment of the PHAs were identified using FT-IR spectroscopic analysis. We studied the thermal cyclization behavior of the PHAs and related this behavior to their chemical structures. DSC and TGA results showed that both the thermal cyclization temperatures and the thermal stabilities were decreased by introduction of fluorine into the main chain of the PHAs.
Influence of Ozone Treatment on Oxidative Stabilization Behavior of Coal-tar-based Isotropic Pitch Fibers
Yang, Jae-Yeon ; Ko, Jae-Kyoung ; Yoon, Kwang-Eui ; Seo, Min-Kang ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 265~272
DOI : 10.12772/TSE.2014.51.265
In this work, we performed ozone treatment of isotropic pitch fibers to optimize the duration and temperature during the stabilization process. The treatment worked effectively for long-term and high-temperature stabilization. The isotropic pitch fibers were ozone-treated at different ozone concentrations of 10, 20, and 30 mg/l. The surface properties of the isotropic pitch fibers were analyzed by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, while their structural characteristics were examined using X-ray diffraction. The experimental results indicated that the surface oxygen functional groups (COOH, OH, and CO) and oxygen concentration of the pitch fibers increased after the ozone treatment. During the oxidative stabilization process, the cross-linking reactions of the oxygen functional groups formed the thermosetting pitch, as confirmed by the replacement of hydrogen with oxygen. Additionally, it was observed that the ozone treatment could improve the optimized oxidative stabilization procedure in carbon fiber manufacturing. Therefore, the ozone treatment played an important role in optimizing the oxidative stabilization procedure of the pitch fibers.
Effect of Filter Design Pattern on Engineering Performance of Geotextile Fabric Form
Jeon, Han-Yong ;
Textile Science and Engineering, volume 51, issue 5, 2014, Pages 273~276
DOI : 10.12772/TSE.2014.51.273
The hydraulic performance of a geotextile fabric form is strongly dependent on the filter point specifications, such as size, pattern, and repeat units. Furthermore, the stability and long-term performance of a geotextile fabric form are very important when the form is filled with mortar concrete. This paper discusses which filter points influence the long-term performance of a fabric form and the relationship between these specifications and serviceability during installation periods. In addition, engineering properties to be considered in real-world applications were evaluated, such as tensile strength and compressive strength considering shear rupture.