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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 43, Issue 6 - Dec 2006
Volume 43, Issue 5 - Oct 2006
Volume 43, Issue 4 - Aug 2006
Volume 43, Issue 3 - Jun 2006
Volume 43, Issue 2 - Apr 2006
Volume 43, Issue 1 - Feb 2006
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Novel Silicon-containing Polynorbornenes as Photoresists for Extreme Ultraviolet Lithography
Kwark, Young-Je ;
Textile Science and Engineering, volume 43, issue 5, 2006, Pages 223~227
Performance requirements for extreme ultraviolet (EUV) resists using photons at
13 nm may require the development of entirely new polymer platforms. Elements that are commonly used in photoresists at other wavelengths, such as oxygen and fluorine, are highly absorbing in this region making them problematic for EUV applications. We have devised new polymer platform for EUV lithography (EUVL). We have synthesized silicon-containing norbornene copolymers using ring-opening metathesis polymerization (ROMP). The norbornene monomers were prepared and copolymerized with a series of monomers having acid sensitive and polar groups, including nitrile, carboxylic acid, hydroxyl, and anhydride functions to achieve random copolymers with suitable properties for EUVL. From initial exposure studies using an EUV interferometer, we were able to produce patterns having a 150 nm pitch without additional optimization.
Fluorogenic Patterning Based on Fluorescence Quenching of
-Conjugated Polymers: Fluorescence Patterning on Films and on Flexible Electrospun Fibrous Mats
Kim, Hyung-Jun ; Lee, Jung-Hyo ; Kwak, Chan-Kyu ; Son, Won-Keun ; Park, Won-Ho ; Lee, Taek-Seung ;
Textile Science and Engineering, volume 43, issue 5, 2006, Pages 228~234
Four copolymers of 9,9-dihexylfluorene and benzothiadiazole derivatives with or without quinoxaline were newly synthesized via Suzuki coupling reaction and characterized. The conjugated polymers with benzothiadiazole moiety in the main chain emitted green fluorescence, while their reduced polymers showed blue emission due to perturbation in the donor-acceptor structure. The polymers were spin-cast into thin films in the presence or absence of photoacid generator and well-defined fluorescence patterns were fabricated on the films by simple UV irradiation. The polymer was electrospun with poly(methyl methacrylate) to produce flexible fibrous mats. Fluorescence patterning was also conducted onto the electrospun fiber web to obtain a stable and flexible pattern without bending damage.
Preparation of PLA/PEG Block Copolymer via Melt Blend
Yoon, Cheol-Soo ; Ji, Dong-Sun ;
Textile Science and Engineering, volume 43, issue 5, 2006, Pages 235~244
PLA/PEG blends composed of poly(lactic acid) (PLA) and poly (ethylene glycol) (PEG) were prepared via melt blending for bioabsorbable filament sutures. The effects of blend composition and blending time on the alcoholysis or esterification in the PLA/PEG blends were investigated. Their properties due to PLA/PEG block copolymer were characterized by
H-NMR, GPC, and DSC analyses. Consequently, PLA/PEG block copolymers were formed during the melt blending by alcoholysis or esterification from a new peak due to -CH
(c') appeared at 4.3 ppm. In addition, the molecular weights of the blends processed in Haake Rheomix for 10
30 minutes at 220
under screw speed 20 rpm decreased with increasing PEG contents and blending time. Their thermal properties such as melting temperature and heat of fusion due to PLA in the blends decreased with increasing PEG contents and blending time. However, their melting temperature and heat of fusion due to PEG increased with an increase of PEG content under constant blending time.
Characterization of PVdF-HFP Nanofibers by Electrospinning
Chang, Duk-Rye ; Cho, Yong-Jun ; Heo, Gi-Seok ;
Textile Science and Engineering, volume 43, issue 5, 2006, Pages 245~250
PVdF-HFP nanofibers were fabricated by co-electrospinning technique. The fabricated PVdF-HFP nanofibers were characterized using scanning electron microscopy (SEM). We have evaluated systematically the effects of the most important processing parameters: voltage, solution concentration and tip to collector distance, on the morphology of the formed fibers. 7.5 wt%
20 wt% PVdF-HFP nanofibers of about 495 nm
m in diameter were fabricated. The average diameter of PVdF-HFP nanofibers increased with increasing concentration of PVdF-HFP solution. It is found that the concentration of PVdF-HFP polymer solution strongly affects the size of the fibers so that diameter of fibers increases with increasing concentration of the solution. Also the applied voltage is strongly correlated with the distribution of nanofibers. In addition, we found an evidence that electrostatic effects influence the stability of discharge.
Rheological Properties and Electrospinning of PVA/CNT Aqueous Solution
Kim, Seoung-Hoon ; Wang, Xiao ; Lee, Sang-Cheol ; Min, Byung-Gil ;
Textile Science and Engineering, volume 43, issue 5, 2006, Pages 251~256
Aqueous solutions of poly(vinyl alcohol)(PVA) containing single-walled carbon nanotube (SWNT) and multi-walled carbon nanotube (MWNT) were prepared by using surfactants and sonication. It was found that the solution viscosities are significantly dependent on types and amount of surfactant and nanotubes. Sodium dodecylbenzene suifonate (NaDDBS) was most effective in dispersing SWNT in water by showing that highest viscosity of PVA/SWNT aqueous solution. The viscosity of PVA/CNT aqueous solution increased with increasing of sonication time implying the exfoliation of CNT However, the viscosity decreased at the additional sonication due to breaking of nanotubes in length. PVA/SWNT aqueous solution showed much higher viscosity than PVA/MWNT solution due to the increase of specific surface area and entanglement by exfoliation of SWNT rope to the individual nanotube. The PVA/SWNT solution exhibited good spinnability in electrospinning.
Effects of Meltblown Process Conditions on the Filtration Characteristics of Polypropylene Non-woven Filter
Hong, Young-Ki ;
Textile Science and Engineering, volume 43, issue 5, 2006, Pages 257~262
Meltblown process is one of the major processes for nonwoven filters. In this study, the collection efficiency of meltblown nonwoven filters made of isotatic- polypropylene(i-PP) was examined for the various processing conditions such as die and air temperatures, die-to-collector distance(DCD) and attenuation air flow rate at the die. The collection efficiency for non-woven filter was found to increase with decreasing DCD, with increasing die temperature, or with increasing air flow rate. In addition, the quality factor of non-woven filter was excellent with increasing DCD in meltblown process like this.
Effect of Surface Damage and Silicon Oil Removal from Nylon/spandex Fabrics on Various ICP Conditions
Jeong, Tak ; Sin, Jung-Uk ; Ji, Young-Yeon ; Kim, Sang-Sik ;
Textile Science and Engineering, volume 43, issue 5, 2006, Pages 263~271
Plasma treatment has been increasingly used for surface cleaning and polymerization in many industries. In this study, inductively coupled plasma (ICP) treatment is used to remove organic residuals, mainly silicon oils from nylon66/spandex fabrics. The removed silicone oils from the fabrics are characterized using scanning electron microscopy. EDX and XPS are also used for determination of the change in elements on the fiber surface. It is shown that lower energy plasma treatment with longer plasma operating time Performs the best in removal of the silicon oils from the fabrics. On the contrary, increasing the energy input enhances the ion damage and yields high heat loads on the fiber surface. Meanwhile, ICP treatment for removing silicon oils is almost same as wet chemical cleaning method in terms of efficiency.
Sound Design System for Knitted Fabrics Using Sound Properties and Physiological Responses(I) -Sound Characteristics and Mechanical Properties of Weft Knitted Fabrics-
Cho, Gil-Soo ; Kim, Chung-Jeong ;
Textile Science and Engineering, volume 43, issue 5, 2006, Pages 272~280
This research aimed to analyze the mechanical properties and sound characteristics of weft knitted fabrics for establishing database of sound design system for knitted fabrics. The specimens consisted of 27 weft knitted fabrics. Mechanical properties of the knitted fabrics were measured with Kawabata evaluation system (KES). The frictional sounds of specimens were recorded by a sound generator and transformed into sound spectrum by FFT. The level pressure of total sound (LPT), level range (
f), and frequency difference (
f) were calculated from the sound spectra obtained in the FFT analysis. Zwicker's psychoacoustic parameters such as loudness(Z), sharpness(Z), roughness(Z), and fluctuation strength(Z) were calculated. The weft knitted fabrics have similar values of roughness(Z) and fluctuation strength(Z). Polyester fabrics with low elongation at maximum load (EM) and high coefficient of friction(MIU) showed the loudest and the sharpest frictional sound. The lyocell fabrics with low bending properties (B, 2HB) and thickness showed the most quiet and softest frictional sounds. Bending properties, surface properties, thickness and weight in weft knitted fabrics showed high relationship with the physical and psychoacoustic properties of frictional sound.