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보문 : 대나무 추출물의 염색성과 기능성 (제2보) -단백질섬유에 대한 염색성-
정고은 ( Go Eun Jung ),이정순 ( Jung Soon Lee ) 한국의류학회 2011 한국의류학회지 Vol.35 No.3
Dyeing properties of protein fiber with bamboo colorants were studied by investigating the effect of dyeing conditions such as dye concentration, dyeing temperatures, times on dye uptakes, effect of mordants, and color change. The various colorfastness of dyed fabrics were evaluated for practical use. In addition, the antimicrobial ability, ultraviolet-cut ability, and deodorant ability were estimated. The dye uptake increased as the dyeing concentration increased. Bamboo colorants showed relatively good affinity to protein fiber and produced a yellow color. Dye uptake increased as the dyeing time and temperature increased. Post-mordanting was more effective than pre-mordanting. Mordants, Fe and N.Fe, were effective for increasing dye uptake. The color of fabric mordanted with Cu and N.Cu changed to GY. Colorfastness of dyed fabrics showed a relatively good rating, and mordanting had no significant effect on colorfastness. Dyed silk fabric showed very good antimicrobial abilities of 99.9%. Also, ultraviolet-cut ability and deodorant ability were improved in silk fabric dyed with bamboo extracts.
보문 : 대나무 추출물의 염색성과 기능성 (제1보)-대나무 추출물의 특성과 면직물에 대한 염색성-
정고은 ( Go Eun Jung ),이정순 ( Jung Soon Lee ) 한국의류학회 2011 한국의류학회지 Vol.35 No.2
The dyeing properties of cotton fabrics with bamboo colorants were studied by investigating the analysis of bamboo colorants, the effect of dyeing conditions (dye concentrations, dyeing temperatures and times on dye uptakes), effect of mordants, and color change. The various colorfastness of dyed fabrics were evaluated for practical use; in addition, the antimicrobial ability, ultraviolet-cut ability, and deodorant ability were also estimated. In the UV-Visible spectrum, the wavelength of the maximum absorption for bamboo stems and leaves extracts was found to be 280nm and 295nm, respectively; in addition, bamboo colorants produced a yellow color. From the FT-IR and GC-MS results, it was assumed that the chromophoric substance from bamboo extracts was composed of flavones substances with tricin. An increased dyeing concentration resulted in a larger dye uptake and a Freundlich absorption isotherm was obtained. A larger dye uptake occurred as the dyeing time and temperature increased. The post-mordanting was more effective than pre-mordanting. Mordants, Fe and N.Fe, were effective for an increased dye uptake. The color of fabrics mordanted with Cu and N.Cu changed to GY. Regardless of mordanting, the colorfastness on the washing of dyed fabrics showed a low rating compared to other fastness. Mordanting adversely affected the lightfastness of dyed fabric. The dyed fabric showed very good antimicrobial abilities of 99.9%. In addition, the ultraviolet-cut ability and deodorant ability improved in cotton fabric dyed with bamboo extracts.
매염제 처리가 대나무잎과 솔잎 추출물로 염색한 직물의 물성 및 태에 미치는 영향
이정순 ( Jung Soon Lee ),우효정 ( Hyo Jung Woo ),정고은 ( Go Eun Jung ) 한국의류산업학회 2012 한국의류산업학회지 Vol.14 No.4
This research categorizes fundamental data needed to develop eco-friendly fabrics treated with bamboo leaf & pine leaf extracts. The effect of mordant on those fabrics was analyzed through the measurement of mechanical properties and the estimation of primary hand values for cotton and silk fabrics dyed with bamboo leaf and pine leaf extracts that were later treated with various mordants. When cotton was dyed with bamboo leaves and pine leaves extracts, EM, WT, 2HB, 2HG, 2HG5, LC, T, and W increased however, RT, SMD, and RC decreased compared to raw cotton fabric. The B, G, and MIU increased after mordant treatment to the dyed cotton and resulted in a stiffer and rougher cotton`s hand, EM, WT, RT, MIU, WC, T, and W increased (in terms of silk); however, LT, B, 2HB, G, 2HG, 2HG5, MMD, SMD, and LC decreased compared to raw silk fabric. Similar to the dyed cotton, mordant treatment increased the MIU and LC of dyed silk subsequently, the hand became stiffer and rougher. A greater tannin adsorption results in an increased mechanical property and the primary hand value. For both fabrics, mordant treatment made its smoothness drop. However, the scale of drop for cotton was significant, while the scale of the drop for silk was minor, In terms of type of mordant, fe-mordant and natural-mordant treatment influenced the tensile, shear, surface properties of fabrics, and primary hand values more than Cu-mordant and synthetic-mordant in addition, this increased the stiffness, hardness, and roughness of fabrics.
비만 중년여성의 8주간의 저항운동이 체간 각도별 신전근력 및 굴곡근력에 미치는 영향
권정현(Kwon, Jung-Hyun),송상협(Song, Sang-Hyup),정고은(Cheong, Go-Eun),이호성(Lee, Ho-Seong) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.1
The purpose of this study was to determine the effect of eight weeks resistance training on extension and flexion of isometric trunk strength in each angle of middle-aged obese women. All subjects (n=7) performed elastic band training using red and blue for 4 weeks, and thereafter conducted dumbbell training of the 1RM 50% (3 set 15-20 times, 2-3 days/week) for 4 weeks. Exercise program was performed for 50 min including warm-up for 10min, exercise training for 30 min and cool-down for 10 min. Extension and flexion of isometric trunk strength in each angle (110°, 122°, 134°, 146°, 158°, 170°, 182°) from 110° to 182° were measured before, after 4- and 8-weeks exercise training. The following were the main results: Isometric trunk extension strength 158° and 182°(p=.032, p=.05, respectively) and isometric trunk flexion strength 146° (p=.03) were significantly increased after 8-week of elastic band and dumbbell training than at the before training. These results suggest that resistance training with elastic band and dumbbell contribute to the muscle strengthening on the upper abdominal and the paraspinal muscles.