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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Textile Science and Engineering
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Journal DOI :
The Korean Fiber Society
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Volume & Issues
Volume 45, Issue 6 - Dec 2008
Volume 45, Issue 5 - Oct 2008
Volume 45, Issue 4 - Aug 2008
Volume 45, Issue 3 - Jun 2008
Volume 45, Issue 2 - Apr 2008
Volume 45, Issue 1 - Feb 2008
Selecting the target year
Effect of Electrostatic Treatments on the Filtration Efficiency of Melt-blown Nonwovens
Shim, Hyun-Joo ; Kang, June-Young ; Jang, Sun-Ho ; Oh, Tae-Hwan ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 57~63
The air filter media were prepared using light polypropylene melt- blown nonwovens and then, corona charge was applied to achieve with low pressure drop and high filtration efficiency air filter. The processing variables for the corona treatments were set up, such as, the electric potential distance between the electrode and the nonwoven, the number of charging, the sequences of charging surfaces, and the concentration of ferro-dielectric nano particles. The electrical potential was applied in the range of 15 to 35 kV, the number of charging was 1 to 4 times with and without turn over the charging surface, the concentration of ferro-dielectric nano particle solutions were 0.5 to 1.5% (W/V). In this research, the most probable processing conditions gave a clue to make a HEPA filter when the media was plied 5 times. This HEPA filter showed its initial pressure drop be 7.7 mmAq and filtration efficiency be 99.99%.
Studies on the Characterization of the Needle Punching Laminated Nonwovens (III) -Penetration Behavior of Liquid-
Lee, Sun-Kun ; Park, Jee-Ki ; Joo, Chang-Whan ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 64~71
The characterization of fluid flow in fibrous assemblies is essential to apply the absorbent materials such as wipe, sanitary and geotextile, and further to expand the end-uses of nonwoven fabrics. The liquid transport in fibrous materials is largely governed by the structure of fabrics. Thus, we have studied fluid transport behavior of needle punching laminated nonwovens (NPLN) with different processing conditions such as punching density and number of layers by a newly designed apparatus. The results obtained are as follows: the penetration force of fluid showed a decreasing trend with increasing punching density of NPLN, but increasing trend above
. The penetration velocity and penetration force increased due to the change of NPLN structure. The penetration velocity and penetration force in the NPLN fabrics decreased with increasing number of layers. Also, fluid penetration radius ratio in the NPLN fabrics generally decreased with increasing punching density, but increased above
. Meanwhile, the penetration radius ratio decreased with increasing number of layers.
Optimization of Processing Condition on the Evenness of Cotton/Polyester Blend Yarns (I) -Sliver Evenness of Drawing Process-
Kim, Gyou-Ho ; Lee, Dae-Hoon ; Joo, Chang-Whan ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 72~80
Evenness of the cotton/polyester(C/P) blend slivers produced with different processing conditions from a drawing frame is significantly affected on the quality of final spun yarns. In this study, we have compared experimental data with theoretical data on the evenness of C/P blend slivers, and established the optimum condition of drawing process, such as blending ratio, doubling strand and passage of drawing. The results obtained can be summarized as follows: The limiting irregularity (
) formula of the cotton sliver considered fiber fineness and fiber extent and the limiting irregularity (
) formula of C/P blend slivers were theoretically established. The limiting irregularity of blend slivers has decreased with increasing polyester fibers in blend slivers. Also, The limiting irregularity of blend slivers has decreased 0.1% with increasing doubling strand and 0.02% with increasing number of passage. The actual irregularity of C/P blend slivers has decreased 2.5% at 4 and 6 doubling, 0.9% at 6 and 8 doubling, respectively. Also, the actual irregularity has decreased 2.3% at 1 and 2 passage conditions, but it showed the uniform trend at 3 and 4 passage conditions. As the analysis result of irregularity index, the optimum condition of C/P blend slivers has estimated at 6 doubling and 2 passage of drawing processes.
Efficient Running Method of Multi-Articular Embroidery Robot Based on Image Data Path Planning
Jeong, Hye-C. ; Seo, Suk-T. ; Chun, Du-Hwan ; Kwon, Soon-H. ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 81~88
Recently various types of application programs to transfer an image data into embroidery data have been proposed and widely used. However the application systems (programs) have the drawback that requires the route designation process by supervisor. Moreover the conventional embroidery machines (shuttle embroidery machine, multi-head embroidery machine, and etc.), which are using in fiber industry, have the drawbacks that the machines occupy wide area and have difficulty to operate at high-speed. Therefore, in this paper, we propose a simple but effective path planning method for an image data and construct an multi-articular embroidery machine to overcome the drawbacks of the conventional embroidery machines. Moreover we show the realizability of multi-articular embroidery machine and the effectiveness of the proposed path planning method through the stitch experiments of the multi-articular embroidery machine applied the proposed method.
Stability of Bundle Flow Dynamic
Kim, Jong-S. ; Huh, You ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 89~96
Bundle flow occurs in the processes where material with long shape in comparison with its cross-section is used and the process products often undergo thickness fluctuation due to the flow dynamics. This study deals with investigating the stability of a bundle flow by means of theoretical simulation. Introducing perturbation in the flow state demonstrated that the eigenvalues of the linearized flow dynamic system, determining the stability of the flow state, were dependent on the model parameters and the draft ratios. The stability diagram revealed that the stable area of the parameters became narrower as the draft ratio increased, which indicates that the state of the bundle flow is sensitive to the input bundle properties. As the fiber cohesion of the bundle or the draft ratio increased, the flow was apt to change to an unstable state. Especially there existed a specific value of the draft ratio that represented a characteristic measure, addressing the criterion of the bundle flow stability. The bundle flow dynamics was insistently stable under the condition of the draft ratio less than the characteristic value, no matter what values of the parameters were given.
Effect of Pretreatment in Electroless Silver Plating to PET Fabrics
Kim, Su-Mi ; Song, Wha-Soon ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 97~103
This study's purpose is to propose the basic data for development of high quality electromagnetic wave shielding fabrics in electroless silver plating. Silver nitrate is used in polyester fabric as an electromagnetic wave shielding material. The alkaline treatment and catalyst treatment are affected to durability of silver membrane in electroless silver plating. Therefore we confirmed add on and thickness of silver membrane, surface morphology and electromagnetic wave shielding effectiveness to etched degree and catalyst concentration of PET fabric. Surface morphology and wash-ability are measured using SEM. The electromagnetic wave shielding effectiveness of polyester fabrics, by electroless silver plating, is measured by using an RF Impedance analyzer. The results are as follows: The optimum weight loss by alkaline treatment of polyester fabrics is about 20%. As the concentration of
increases, add on and thickness of silver, electromagnetic wave shielding effectiveness increased. The optimum concentration of
in the catalyst reaction, is 5.0 g/l and 0.5 g/l, respectively.
Antimicrobial and Deodorization Finishing of Soybean/Cotton Blended Fiber and Chitosan Finishing with Glyoxal
Bae, Young-Hwan ; Kim, Dong-Eun ; Lee, Hyo-Jin ; Kim, Eui-Hwa ; Jeong, Yong-Sik ; Hong, Young-Ki ; Lee, Seung-Goo ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 104~110
The soybean/cotton blended fabrics were treated with two different commercial finishing agents to enhance the antimicrobial and deodorization activity. Also, we used the polymeric chitosan for improving the antimicrobial functionality. A pad-dry-cure process was performed to endow those functionality to the soybean protein fabrics. The treated fabrics by finishing agents have significantly improved antimicrobial and deodorization activity. However the chitosan only treated fabrics show relatively low functionality. Thus, we used the glyoxal as a crosslinking agent to increase the adhesion between the fabric and chitosan. The chitosan treated fabrics with glyoxal have high antimicrobial and deodorization activities as well as improved durability.
Effect of Chain Structure of Diisocyanate and Chain Extender on the Thermal Characteristics of Polyurethane
Park, Ki-Ho ; Jin, Gangfu ; Lee, Han-Sup ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 111~119
Polyurethane(PU), a type of thermoplastic elastomer, consists of two different segments (hard and soft segments) that are incompatible at room temperature. Depending on the chemical and physical structure of those two segments, polyurethane shows various internal structures. In this study, a series of polyurethane were synthesized using PPDI (l,4-phenylene diisocyanate), TODI(3,3'-dimethyl diphenyl 4,4'-diisocyanate), MDI(4,4'-diphenylmethane diisocyanate) as disocyanate, 1,4 BD and HQEE(hydroxyquinone-di-(beta-hydroxyethyl)ether) as chain extender in order to test the effect of chemical structure of hard segment on the phase separation behavior and thermal stability of polyurethane. The effect of diisocyanate and chain extender on the thermal stability of polyurethane was measured with DSC, POM, SAXS and FTIR methods. Compared with PU based on the asymmetric and aliphatic component, PUs based on the symmetric and aromatic chemical structures were found to form phase separated structure showing enhanced thermal stability. The good thermal properties were also explained in terms of the good packing behavior between hard segments in the PPDI-based polyurethane.
Scouring and Bleaching of Chitosan/Nanosilver Composite Fiber Blended Yarn and Its Knit
Lee, Beom-Soo ; Jeong, Sung-Hoon ; Lee, Bum-Hoon ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 120~126
This study was to investigate the scouring and bleaching efficiency of blended yam with chitosan/nano-silver composite fiber(CSY) and its knit(CSK) compared with common cotton yam(CMF) and knit(CMK). The scouring and bleaching efficiency were analyzed by weight loss, whiteness and reflectance. The variation of bacterial reduction in various concentrations of hydrogen peroxide and alkalis(soda ash, caustic soda) was assessed. Significant change of physical properties of CSY(CSK) compared with CMY(CMK) was not observed. However, the antibacterial properties were dominantly influenced by pre-treatment conditions.
Synthesis and Thermal Properties of Poly(pentamethylene 2,6-naphthalate)
Park, Sang-Wook ; Lee, Kyoung-Woo ; Kim, Young-Ho ;
Textile Science and Engineering, volume 45, issue 2, 2008, Pages 127~136
Poly(pentamethylene 2,6-naphthalate) (PPN) with a intrinsic viscosity of 0.69 dl/g was synthesized from dimethyl 2,6-naphthalene dicarboxylate and 1,5-pentnandiol via a two-step process of transesterification and polycondensation using a high pressure reactor. Manganese acetate tetrahydrate and tetraisopropyl orthotitanate were used as catalysts for transesterification and polycondensation, respectively. Melt-quenched films of the PPN were prepared and annealed under various conditions, and the thermal properties of the annealed films were characterized by using a DSC and synchrotron WAXS. PPN exhibited a very slow crystallization rate. On DSC thermograms, three melting peaks were observed at around
, depending on the annealing conditions. At least more than 6 hours of annealing was needed for the PPN film to be crystallized when it was annealed at a temperature below its melting point, and 3 hours of annealing when annealed at
which corresponds to the
. From the results of DSC and WAXS analysis, it is deduced that the continuous increase in crystallinity of PPN with increasing annealing time comes from the increase in the number of crystallites, not from the increase in the crystallite size.