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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 44, Issue 6 - Dec 2007
Volume 44, Issue 5 - Oct 2007
Volume 44, Issue 4 - Aug 2007
Volume 44, Issue 3 - Jun 2007
Volume 44, Issue 2 - Apr 2007
Volume 44, Issue 1 - Feb 2007
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Preparation of Polyurea Microcapsule by Interfacial Polymerization -Influence of Dispersed Phase Viscosity on the Size of Obtained Microcapsules-
Lee, Dong-Sun ; Kum, Chang-Hun ; Cho, Chang-Gi ;
Textile Science and Engineering, volume 44, issue 5, 2007, Pages 245~251
Polyurea microcapsules were prepared by interfacial polycondensation using diisocyanates as the oil soluble monomers and diethylenetriamine as the water soluble monomer. NP-10, nonionic surfactant, was used as an emulsifier. Toluene was used as the diluent of the diisocyanates as well as the means to prepare microcapsule with empty shell. Number average particle size of the microcapsule showed a linear relationship with the viscosity of the dispersed oil phase. Polyurea microcapsule with thinner shell thickness showed good thermal stability well above
and showed same thermal stability compared to that with thicker shell thickness.
Gelation Characteristics of High Molecular Weight Poly(vinyl alcohol) Solution
Yeo, Jeong-Sup ; Kim, Ki-Jeong ; Lyoo, Won-Seok ; Oh, Young-Se ; Kim, Joon-Ho ;
Textile Science and Engineering, volume 44, issue 5, 2007, Pages 252~256
The gelation behaviors of high molecular weight poly(vinyl alcohol)(PVA) solutions were investigated by the measurements of the rate of phase separation and the rate of gelation. PVA solutions were prepared with dimethyl sulfoxide(DMSO)/water mixed solvents in various compositions. Gelation time was gradually shortened with increasing DMSO content in the mixed solvent up to 60%(vol.). Also, the gelation was faster for higher molecular weight PVA due to easier network formation with higher degree of polymerization. Gels of PVA solutions formed at
showed high transparency with the exception of DMSO/water(v/v)=0/100, 90/10, 100/0 solutions. Particularly, the gel formed in the mixed solvent of DMSO/water(v/v)=80/20 still maintained its transparency after 20,000 min. This means that the most stable PVA gel can be made with the mixed solvent of DMSO/water(v/v)=80/20.
Dyeing Characteristics and Fastness of Dyeable Polypropylene Fiber by Disperse Dyes
Kim, Eun-Mi ; Kwon, Oh-Kyoung ; Lee, Hyun-Young ; Choi, Jae-Hong ;
Textile Science and Engineering, volume 44, issue 5, 2007, Pages 257~262
Dyeable polypropylene fiber was woven and evaluated its dyeing characteristics and fastness using 22 commercial disperse dyes. Higher exhaustion yield was achieved at
dyeing where it ranged from 30% to 88%. The dyes contain diacetoxy or dinitrile group in the coupler ring and substituted by a nitro group in the diazotizer ring exhibited higher exhaustion yield. The calculated solubility parameter of suitable dyes for DPP fiber was in the range of 22.8-27.7. Color fastness, such as wash, rubbing, perspiration, light was revealed to be similar to those of PET dyeings.
Dynamic Behavior of Droplet in Electrospinning under Equilibrium State
Kong, C.S. ; Lee, T.H. ; Kim, Han-Seong ;
Textile Science and Engineering, volume 44, issue 5, 2007, Pages 263~267
The electro-spinning is a process in which a jet is ejected by the electrical force which is acting on the droplet and overcoming its surface tension. Unstable jet is ejected under the condition named as Fluctuation that is defined as jet instability. In this study, the dynamic behaviors of a pendant droplet at the exit of the nozzle were investigated to understand the key parameters in the jet instability. The system was developed to control the flow rate of a pendent droplet. Dynamic behaviors of a droplet in electrospinning with the various needle diameters, TCDs (tip-to-collect distance), voltages could be successfully classified into particular steps. Various behaviors of the droplet in electrospinning that may influence the jet instability were investigated.
Studies on the Compressibility and Volumetric Expansivity of Amorphous Polymer ABS and SAN Using PVT Measurements
Kang, Seong-Wook ; Kim, Seong-Hun ;
Textile Science and Engineering, volume 44, issue 5, 2007, Pages 268~273
The specific volume change of polymer occurs to various reactions of mechanical stress, chemical reaction, glass transition and crystallization and so on. In regular state, the specific volume of material as function of temperature and pressure is changed. The experimental and theoretical equations of state (EOS) are Tait equation and Simha-Somcynsky equation for amorphous polymer and Simha-Jain theory for crystalline polymer. This study carried out measurement of the specific volume as function of temperature and pressure using Gnomix pressure-volume-temperature (PVT) and the measured data were fitted two domain Tait equation. These results that the difference of the measured and calculated value were almost same less than 0.1% and 10 parameters which were obtained Tait fitting use to calculate compressibility and volumetric expansivity of amorphous polymers. The used ABS resins were same butadiene rubber content at 16 wt% but they had different rubber size. ABS1 consisted of only one rubber size and ABS2 consisted of two rubber sizes. The compressibility and volumetric expansivity of ABS1 was higher than those of BS2. However, for the difference of volumetric expansivity between 0 and 100 MPa, ABS2 was slightly lower than ABS1.
A Study on the Preparation and Microstructure of the
Kim, Young-Un ; Lee, Tae-Sang ; Kim, Eui-Hwa ; Joo, Yong-L. ; Lee, Seung-Goo ;
Textile Science and Engineering, volume 44, issue 5, 2007, Pages 274~279
In order to prepare neat barium titanate/silica (
) composite fibers, combined process of sol-gel synthesis and electrospinning was utilized. Electrospun composite fibers were subjected to the high temperature calcinations to fabricate the crystalline structure of
. The fraction of barium titanate to silica in fiber and the calcination temperature of fiber were varied. Prepared
composite fibers have diameters of 500 nm to
and show the neat surface morphology without any porous structure. Calcined composites fibers were characterized using powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FT-IR).
Uniaxial Drawing Behavior of Electrospun Poly(ethylene terephthalate) Fibers
Baek, Chi-Kyoung ; Jeon, Hyun-Jeong ; Youk, Ji-Ho ;
Textile Science and Engineering, volume 44, issue 5, 2007, Pages 280~284
The morphological change and molecular orientation of electrospun ultrafine poly(ethylene terephthalate) (PET) fibers were investigated during uniaxial drawing. The average diameters of the ultrafine PET fibers electrospun from 8, 10, and 12 wt% PET solutions were 220, 450, and 1600nm, respectively. The ultrafine PET fibers were drawn inhomogeneously with multiple necking deformations at
, whereas they could be homogeneously drawn without necking at
. The orientation of the PET chains in the ultrafine PET fibers readily proceeded when drawn at
via necking deformation. By comparing the fractions of the trans conformer of the ultrafine PET fibers and the amorphous PET films (ref. 14, 15), it was found that the orientation of PET chains more readily proceeded in the ultrafine PET fibers than in the amorphous PET films.
Studies on Presetting and Dyeing of Poly(trimethylene terephthalate)/Cellulose Single Jersey Knitted Fabrics
Jeong, Sung-Hoon ; Cha, Yong-Ho ; Lee, Kwon-Sun ; Oh, Tae-Hwan ;
Textile Science and Engineering, volume 44, issue 5, 2007, Pages 285~291
The effect of mercerizing, presetting and dyeing of single jersey poly(trimethylene terephthalate) (PTT)/cellulose knitted fabrics were carried out. Pre-treating, dyeing, and finishing conditions were optimized to make uniform PTT/Cellulose knitted fabrics. The optimum conditions of the PTT/Cellulose knitted fabrics for mercerization were 22.5 wt% NaOH,
and 23 m/min of tenter speed. A cold-pad-batch (CPB) dyeing method could minimize process problems of high tension and rubbing in comparison with an ordinary exhaust dyeing method. Fastness was the best when the fabric was dyed at temperature of
and for 40 min. We resolved a tailing problem of the CPB process by controlling tenter speed and temperature.