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허종태,이경주,박병기,정용식,Huh, Jong-Tea,Lee, Kyung-Ju,Pak, Pyong-Ki,Chung, Yong-Sik 한국섬유공학회 2007 한국섬유공학회지 Vol.44 No.2
Nylon filaments are manufactured by melt-spinning process such as UDY-DT (undrawn yarn-draw twist), POY (partially oriented yarn) and FDY (fully drawn yarn). In this study, dyeing properties of nylon filaments according to spinning process were investigated. The fact that microstructure of nylon filaments in amorphous region particularly is transformed by each spinning process was confirmed indirectly by measurement of dyeing rate because dyeing rate was affected by the structure of amorphous region. Diffusion rate of dye was fastest in POY not being drawn separately because drawing filaments increase amorphous orientation and disturb dye diffusion into amorphous region. Diffusion rate of dye was slower in UDY-DT having ${\alpha}$-form crystal than in FDY having ${\gamma}$-form crystal. But difference in K/S value, build-up and fastness was insignificant.
${\beta}$-cyclodextrin 및 가교제 처리에 의한 면직물의 방향가공
허종태,이경주,박병기,정용식,Huh, Jong-Tea,Lee, Kyung-Ju,Pak, Pyong-Ki,Chung, Yong-Sik 한국섬유공학회 2007 한국섬유공학회지 Vol.44 No.2
[ ${\beta}$ ]-cyclodextrin having an inclusion property was applied to perfumed finishing of textile goods. ${\beta}$-cyclodextrin was treated on the cotton fabric with polycarboxylic acid such as citric acid and butanetetracarboxylic acid. The fact that ${\beta}$-cyclodextrin is covalently bound to cotton fabric with butanetetracarboxylic acid was confirmed by IR spectrum, TGA thermogram, and dyeing with basic dye. In case of citric acid, the result was not satisfactory, which was supported by laundering durability experiment. When cotton fabric treated with crosslinking agent and ${\beta}$-cyclodextrin was compared with cotton fabric treated with only crosslinking agent, they gave similar values in dry wrinkle recovery angle. Perfumed finishing with ${\beta}$-cyclodextrin including perfume was possible.
Wet Spun 공정에 의해 제조된 모시사의 물리적 특성 및 염색성에 관한 연구
김현철,김우영,최충열,박병기,Kim Hyun-Chel,Kim Woo-Young,Choi Choong-Youl,Pak Pyong-Ki 한국섬유공학회 2006 한국섬유공학회지 Vol.43 No.3
Ramie(Mosi) yarn was manufactured by wet spun processing method. The yarn was consisted of fiber length $80{\sim}90mm$ and fiber diameter $15{\sim}30{\mu}m$. The ramie yarn manufactured by wet spun processing was superior in appearance and polish. The ramie yarn manufactured by wet spun processing was investigated on the mechanical characteristics, drying abilities and dyeing properties. The fineness of ramie yarn was varied with $40{\sim}90lea$. From the results of mechanical properties, ramie yarns revealed suitable tenacity and evenness for knit and woven fabric manufacturing. However, most of the ramie yarn except 80 lea yam led to an increase of evenness due to the increase of draft and nep creations in the wet spinning process. The ramie was far superior in drying ability than cotton at the same drying time. The exhaustion rate of the reactive dyeing on the ramie yam was decreased than cotton yarn with increasing the dyeing time. The dye exhaustion of the reactive Red 195 on the ramie yarn was increased with increasing dye-bath concentration.
말산과 젖산을 부가하여 전기방사한 Poly(vinyl alcohol) 부직포
정윤호,조민석,이운수,길명섭,박병기,김학용,Jung, Yoon-Ho,Cho, Min-Seok,Lee, Un-Soo,Khil, Myung-Seob,Pak, Pyong-Ki,Kim, Hak-Yong 한국섬유공학회 2007 한국섬유공학회지 Vol.44 No.2
Poly(vinyl alcohol) (PVA) solutions were prepared by dissolving PVA in malic acid (MA)/distilled water, lactic acid (LA)/distilled water, and distilled water (DW) as a comparison solvent Viscosity and electric conductivity of PVA solution were determined by using a digital viscometer and electric conductivity' meter at room temperature, respectively. The morphological characteristics of the electrospun PVA nonwoven mats were investigated with a scanning electron microscopy (SEM) after gold sputtering. Also, mechanical properties of electrospun PVA nonwoven mats were measured by a universal testing machine (UTM). SEM results indicated that the electrospun fibers prepared from 4 wt% MA/DW as a solvent showed highly entangled structure due to their bent shape, which resulted in high mechanical strength of electrospun PVA nonwoven mats. Tensile strength and breaking elongation of electrospun PVA fibers prepared from 4 wt% MA/DW were over 12 MPa and 420%, respectively.