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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 41, Issue 6 - Dec 2004
Volume 41, Issue 5 - Oct 2004
Volume 41, Issue 4 - Aug 2004
Volume 41, Issue 3 - Jun 2004
Volume 41, Issue 2 - Apr 2004
Volume 41, Issue 1 - Feb 2004
Selecting the target year
Mechanical, Thermal and Electrical Properties of Carbon Nanotube-Polyurethane Nanocomposites
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 73~79
Nanocomposites composed of thermoplastic polyurethane block copolymer (PU) and multi-walled carbon nanotube (CNT) were prepared by melt-compounding, and their mechanical and thermal properties were investigated along with electrical conductivity. Modulus of composites increased proportionally with increasing CNT content breaking stress tended to decrease except 1% CNT, and strain-at-break decreased gradually. However, composites using sonicated nanotube showed different mechanical behavior, and especially, their strain-at-break increased largely due to better dispersion of nanotube in PU. It was considered that tensile properties of composites were dependent on CNT content, dispersion of nanotubes in matrix, and phase separation between hard and soft segments of PU due to nanotube addition. With increasing CNT content, glass transition temperature and maximum loss tangent decreased and thermal stability improved. Also electrical conductivity increased to 10
S/cm for the 3% CNT composite.
Effect of Continuous UV/
Irradiation on the Physical Properties of PET and PTT Fabrics
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 80~85
Continuous UV irradiation on textiles has been recently exploited as a practical surface treatment due to the commercial development of high intensity UV light source. In this study PET and PTT fabrics were continuously irradiated with an electrodeless UV lamp for different periods of time. The effect of UV/O
treatment on the mechanical properties of the polyester fabrics relevant to the apparel manufacturing process, such as fabric thickness, crimp, modulus, extensibility, bending and shear rigidity, were studied. The physical properties of PTT fabric were more influenced by the UV treatment than PET fabric. The widthwise extensibility of treated PTT fabric increased with UV/O
irradiation time due to crimp increase and fabric shrinkage which occur during UV/O
irradiation. The shrunken fabric structure resulted in increased bending rigidity. However the shear rigidity of treated fabrics decreased due to stress relaxation, presumably by infra-red emitted with UV irradiation.
Preparation of Cladding Polymers for Heat Resistant Plastic Optical Fiber (II) -Addition of Methacrylic Acid as Comonomer-
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 86~90
We introduced methacrylic acid (MAA) into 80/20 trifluoroethyl methacrylate (TFEMA)-methyl methacrylate (MMA) copolymer in order to prepare heat-resistant cladding materials for plastic optical fiber based on poly(methyl methacrylate) (PMMA). As the content of MAA in the terpolymers increases, their T
s increase to be higher values than those predicted by the Fox equation. Moreover, the interfacial adhesion between PMMA and the terpolymers, evaluated from the cross cut tape test, also increases from 1B to 4B classification. The results show that the MAA units, introduced in order to induce a specific intermolecular interaction, effectively contribute to increase the interfacial adhesion with PMMA as well as the thermal stability of the resultant copolymers.s.
Characterization of Cellulos/N-(2-hydroxy)propyl-3-trimethylammonium Chitosan Chloride Blend Fibers Prepared from NMMO/Water Solvent System
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 91~99
Cellulose and N-(2-hydroxy)propyl-3-trimethylammonium chitosan chloride (HTCC) were solution blended using 50% N-methylmorpholine-N-oxide (NMMO) aqueous solution as a solvent. The blend fibers of cellulose/HTCC having different HTCC content could be obtained via dry-jet wet spinning process at the take-up speeds of 3～18 m/min. The mechanical, thermal, and structural properties of the blend fibers were investigated. High take-up speed resulted in high tenacity and low elongation as expected. Dry tenacity values did not change with increasing HTCC content. Wet tenacity values, on the other hand, decreased significantly compared to dry ones, the effect being more pronounced with increasing HTCC content. The presence of HTCC in the blend fiber did not affect the crystalline structure of cellulose, however it decreased the crystallinity index. As the take-up speed increased, crystallinity index and crystallite orientation factor of the cellulose in the blend fiber increased. The blend fibers showed lower degradation temperatures than regenerated cellulose. They can be dyed with acid dye, and the color strength (K/S) of the dyed samples increased with increase in HTCC content.
Wrinkle Recovery Properties of Cellulose Fabrics Treated with DMDHI and Silicone-Urethane Copolymer
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 100~105
To improve the crease resistance, we studied the effects of silicone-urethane copolymer coating on cellulose fabrics, such as those on the crease resistance, bursting strength, tensile strength, and water absorbency. With increase in the concentration of silicone-urethane copolymer, wrinkle recovery increased but other properties of fabrics such as bursting strength, tensile strength and water absorbency decreased. Wrinkle recovery of fabrics increased by the treatment with DMDHI (dimethyl dihydroxy imidazolinone) resin and silicone-urethane copolymer, and the maximum value was obtained with 20 wt% DMDHI resin, 6 wt% catalyst and 3 wt% silicone-urethane copolymer, respectively. The water absorbency value of fabrics treated with resin was similar to that of untreated, but decreased considerably by the addition of silicone-urethane copolymer. The surface of fabrics treated with resin and additive were observed on a image analyzer. The surface hairiness was reduced and the alignment of fibers in the fabric became uniform and the fabric became dense by resin and additive treatment.
Modeling of Jet Loom Structure Using Component Mode Synthesis Method
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 106~111
The main frame of a jet loom is a very important part supporting the other parts of the operating system, thus, the dynamic characteristics of main frame was investigated in order to analyze the dynamic characteristics of jet looms. In this study, a finite element model of the main frame of a jet loom was developed as a part of an examination of the dynamic characteristics of jet looms. Dynamic analysis of a complex structure system is usually accomplished by analyzing its finite element model. When the total number of degrees of freedom in the model is too large even for modern digital computers to handle economically, recourse is often taken to use the component mode synthesis (CMS) approach. Of the CMS method, the fixed-interface CMS method, which was applied to modeling of main frame, is presented in this paper. In this method, equations of motion were assembled on the truncated normal modes of components, complemented with static modes and developed in a general matrix form for structures with any number of components. Not only does the present method reduce the degree of freedom of the main frame, but its results were in good agreement with results obtained by analyzing the full finite element model.
Comparison of Mechanical Properties and Hand Values of Woven Fabrics Made from Non-circular Shaped Yarns
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 112~118
In order to study the effects of fiber shapes and fiber assembly structure on the mechanical properties and hand value of a woven fabric, fabrics were prepared using various cross-section fibers. For the rigorous study, the fabrics were woven on the same weaving loom under the identical processing conditions. The mechanical properties of the fabrics were measured using KES-FB system and the hand values for women's thin dress application were calculated from the measured properties using KN-203-LDY. For simple analysis, cluster analysis was carried out and the fabrics were categorized into three groups. The experimental research found that mechanical properties and hand values of the fabrics depends significantly on the fiber cross-section types and fiber assembly structure. The results revealed that the compactness of fiber assembly showed greater influence on the hand values than the cross-sectional shape of the filaments.
Absorbent Behavior of Air-laid Nonwovens (IV) -Structural Equation for the Prediction of Absorption Rate in Fibrous Webs Containing Different Fibers-
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 119~124
Structural equation was derived to predict absorption rate in nonwoven webs. The variables considered for the equation were fiber denier, fiber density, fiber blend ratio, fiber contact angle, and web thickness. Experiment was carried out to verify the equation in air-laid nonwovens prepared using polyester and rayon fibers with different blend ratios. The results showed that although there was a difference of approximately an order of magnitude between the calculated and the measured rates, the relationship was linear with a high correlation coefficient.
Low-stress Mechanical Properties of Poly(ethylene terephthalate) and Poly(trimethylene terephthalate) Knit Fabrics Treated by Helium Atmospheric Pressure Plasma
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 125~132
Poly(trimethylene terephthalate) (PTT) and poly(ethylene terephthalate) (PET) warp knitted fabrics were treated by helium atmospheric pressure glow discharge plasma. Weight loss (%) measurements and scanning electron microscopy (SEM) analysis showed removal of lubricant and contamination by plasma etching effect. X-ray photoelectron spectroscopy (XPS) analysis revealed that surface oxidation resulted in formation of hydrophilic groups which enhanced moisture regain (%), after storage. Plasma treatments caused PTT to have more profound surface oxidation and cleaning effect. It was found that low-stress mechanical properties, evaluated by Kawabata evaluation system (KES-FB), were enhanced by plasma treatment. Surface property changes by plasma etching played important roles in changing not only low-stress mechanical properties but also bulk properties of both fabrics, as a result of changes in interfiber and interyarn friction.
Evaluation of Abrasion Resistance of Geosynthetics by Rotational Abrasion Test
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 133~139
Rotational abrasion test was applied to geosynthetics to examine the effects of surface damage type on the abrasion resistance using different friction brush type and sandpaper particle size. In this study, the effects of friction brush type and sandpaper particle size on abrasion resistance were investigated. Surface damage of geosynthetics by rotational abrasion test was interpreted based on the phenomenological results. Abrasion resistance of geosynthetics was examined through tensile strength changes before and after abrasion test. Nonwoven geotextiles showed severe surface damage with type B and C brushes. Geogrid and geomembrane showed slight surface damage by type A brush but was fractured by type B and C brush. When sandpaper was used, nonwoven geotextiles showed more severe surface damage than woven geotextile. Tensile strength changes of all geosynthetics were closely related to the surface damage after rotational abrasion test.
Structural Characteristics of Nylon 6/Clay Hybrid Nanocomposite Film on Drawing
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 140~150
The macroscopic structure changes and the fine structure formation on uniaxial drawing of nylon 6 (N6) and nylon 6/clay hybrid nanocomposite films containing 2 and 5 wt% clay (NCH2, NCH5) were investigated by determining the Poisson's ratio, spontaneous shrinkage and density, and wide angle X-ray diffraction. The films were produced by rapid quenching in ice-water (QU-) and controlled cooling using water-circulation (SC-), and drawn in a silicon oil bath at 80-18
to draw ratio 3.5 and annealed at 18
. The results are as follows: (1) Poisson's ratios (
) of width and thickness show tremendous gap between N6 and NCH at all draw temperatures, furthermore the
of QU- NCH films decreased with increasing draw temperature and clay content while the
of SC-films were nearly unchanged. (2) The spontaneous shrinkage (%) after conditioning for 1 week decreased with increasing draw temperature in both QU- and SC-films, and also decreased as the clay content increased a fixed draw temperature. (3) The N6 matrix density increased with increasing draw temperature, but decreased with increase in clay content. (4) The Qu-films did not show any difference in the through and edge diffraction patterns, while the SC-films showed an anisotropic crystalline structure.cture.ure.
The Effect of Interfiber Distance on the Interfacial Properties in E-glass Fiber/Epoxy Resin Model Composites
Textile Science and Engineering, volume 41, issue 2, 2004, Pages 151~159
The effect of interfiber distance on the interfacial properties in E-glass fiber/epoxy resin composites was investigated using single and two fiber fragmentation test specimens with various interfiber distance. In addition, the effect of the fiber surface treatment on the interfacial properties was studied. As a result, we found that the interfacial shear strength increased with the increasing interfiber distance in the range between 0 and 50
m regardless of sized and desized fibers. It was seen that the interfacial shear strengths were in close agreement with those of the single fiber fragmentation test. We also found that when the interfiber distance became smaller, the stress distribution pattern was similar to that of a single fiber and when the interfiber distance became more than 50
m, the stress distribution pattern was independent of the distance between fibers. Finally, the interfacial shear strength evaluated using two E-glass fiber/epoxy resin fragmentation test is shown as real values in-site regardless of the fiber surface treatment and interfiber distance.