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고준석,박종호,이권선,김성동,Koh Joonseok,Park Jong Ho,Lee Kwon Sun,Kim Sung Dong 한국섬유공학회 2005 한국섬유공학회지 Vol.42 No.6
The weight reduction properties and dyeing properties of sea-island type PET supermicrofiber were compared with those of normal sea-island type PET microfibers. The alkaline dissolution behavior of microfibers were monitored using a cationic dye staining method. The dye uptake of finer microfibers commences at lower temperatures and showed faster rate of dye uptake. The build-up and wet fastness properties of disperse dyes on finer microfbers were relatively poor since more dye was required to achieve a given depth of shade due to the large surface area. Also, the low temperature dyeing of microfibers produced higher color yield than normal high temperature dyeing because of less dye migration to the coarser fibers during dyeing.
박종호,이권선,고준석,배진석,김성동,Park Jong Ho,Lee Kwon Sun,Koh Joonseok,Bae Jin-Seok,Kim Sung Dong 한국섬유공학회 2005 한국섬유공학회지 Vol.42 No.5
Disperse dyes derived from heterocyclic compounds such as pyridone, diaminopyridine, carbazole, and 2-phenylindole, have been known to possess high light fastness. Four heterocyclic azo disperse dyes were synthesized by using three diaminopyridines and 2-phenylindole as coulping components and their dyeing and fastness properties were compared with an aminoazobenzene disperse dye. The wavelengths of maximum absorption of the synthesized heterocyclic dyes were in the range of 508-528 nm. The molar extinction coefficients of dyes having diaminopyridine were higher than that of an aminoazobenzene disperse dye. The dyes derived from aminopyridine having phenyl group exhibited poor to moderate build-up compared to the aminoazobenzene dye. Wash, light, heat and rubbing fastnesses of heterocyclic azo disperse dyes were good to excellent. The light fastness was improved by 0.5-1 grade by the addition of a UV absorber.
최중환,홍엄지,최란,홍선표,고준석,Choi, Joong Hwan,Hong, Umji,Choi, Ran,Hong, Sunpyo,Koh, Joonseok 한국섬유공학회 2014 한국섬유공학회지 Vol.51 No.4
Morinda citrifolia, commercially known as Noni, is a tree that grows widely throughout the Pacific, and is recognized as one of the most significant sources of traditional medicines among Pacific Island societies. The bark and the roots of the tree contain red and yellow pigments respectively, which are both used in the manufacture of dyes. Dyes from Noni are being used traditionally, to color clothing and fabrics. In this study, dyeing properties of Noni root extracts on silk fabrics at various pH conditions were investigated.
김현기,윤지수,신민철,윤상현,심재윤,고준석,Kim, Hyunki,Yoon, Jisoo,Shin, Mincheol,Yoon, Sanghyun,Shim, Jaeyun,Koh, Joonseok 한국섬유공학회 2017 한국섬유공학회지 Vol.54 No.3
A new environment-friendly flame retardant, classified as a phosphoramidic-acid-based flame retardant, was synthesized by utilizing neopentyl glycol, phosphorus oxychloride, and ethylene diamine, for application to polyurethane artificial leather. The structure of the synthesized flame retardant was identified by $^1H$-NMR and FT-IR spectrophotometry and the thermal properties of the flame retardant were investigated by means of thermogravimetry and differential scanning calorimetry. The purity of the synthesized flame retardant was improved by the solvent exchange technique. Particle size reduction to a mean particle size of 374 nm was achieved by the ball milling process. Hydrolysis, solubility, and fire retardance tests suggest that the synthesized compound has good flame retardancy along with properties that are adequate for the manufacturing process of polyurethane artificial leather.
대두유 폴리올을 이용한 환경친화형 폴리우레탄의 합성 및 물성 연구
옥주원,김풍기,조현상,권오경,정원욱,고준석,Ock, Joo-Weon,Kim, Poongki,Cho, Hyunsang,Kwon, Oh Kyung,Jung, Wonwook,Koh, Joonseok 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.5
An eco-friendly polyurethane incorporating a soybean-oil-based polyol was synthesized using a prepolymer method, and the chemical structure, molecular weights, and thermal properties of the polyurethane were characterized using instrumental analysis. The disperse and reactive dyeing properties of the eco-friendly polyurethane incorporating the soybean-oil-based polyol were compared to those of conventional petroleum-based polyurethane.
한국 남자 군인 현 방한복의 치수, 동작적합성 만족도에 관한 연구
한현숙 ( Hyunsook Han ),한현정 ( Hyunjung Han ),조자영 ( Jayoung Cho ),고준석 ( Joonseok Koh ) 한국의류산업학회 2016 한국의류산업학회지 Vol.18 No.5
This study investigates the problems of fitness and motion suitability for Korean male military winter jackets (inner and outer) and provides data for new pattern development. We analyzed fitness and motion suitability by a questionnaire survey with 140 Korean male soldiers and a wearing evaluation with 7 subjects of central army male size. A survey of male soldiers indicated that the fitness and motion suitability satisfaction was over 3.0 (Likert scale) for both inner and outer jackets. There were opinions that the sleeve length was short for the inner jacket and the waist girth and hem girth was slightly large for the outer jacket. In the wearing evaluation results with subjects of central army male size, fitness of total length, sleeve length and collar height showed a score lower than 3.0 for the inner jacket and collar height on the outer jacket. The motion suitability result showed a low score (1.0-2.0) in an arm raising motion for the inner jacket and 2.0-3.0 at neck motion in the outer jacket. In conclusion, there is more dissatisfaction in inner jackets than outer jackets. For the inner jacket, sleeve is short, sleeve hem is narrow, collar height is a little high and the sleeve creeps up during arm motion. The waist girth and hem girth was slightly large and collar height was a little high for the outer jacket.