• 한국의류학회지
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• 제47권1호
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• pp.1-16
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• 2023

The smart fashion industry is showing steady growth worldwide, which will create new value throughout the fashion industry and become an essential element for efficient lifestyles. This study attempted to examine the development trend of smart fashion products from a design perspective and present the direction of design as a fashion item incorporating smart technology from a functional perspective. For this purpose, the category of portable smart fashion and the characteristics of the research object were considered through current status survey and previous research review. Among smart fashion, accessories and clothing/fabric products that have been released thus far that apply portable fashion design principles are selected and its characteristics are analyzed. In addition, function keywords were extracted based on the product description provided by the manufacturer and the function-oriented types were classified to identify each type's design characteristics. Therefore, the area receiving the signal and the sensor size should be considered, as should the fashion accessory type that combines various materials and colors. The clothing/textile type requires a design that mainly focuses on functions related to bio-signal interactions.

• 한국의류학회지
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• 제46권4호
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• pp.624-637
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• 2022

The purpose of this study was to develop a compression inner layer (CIL) that can be attached to dress shirts for men who have gynecomastia (male breast enlargement). For this, we developed shirts with CIL prototypes based on the functional, expressive, and aesthetic (FEA) consumer needs model. The user-centered design principle guided the design process. Based on size measurements, in-depth interviews, and an online survey, the design requirements for dress shirts with a CIL were determined, and the prototype was developed. The dress shirts were constructed of polyester and spandex mixed materials, while the CIL was made of thin mesh fabric knitted from 80% polyester and 20% spandex. A CIL prototype was developed with a front zipper fastening to hold the upper body tight and compress the breast area. The CIL was attached by connecting a strap with snap buttons to loops sewn into the shoulder line of the dress shirt. In the trial and sensory test, the prototype helped breast size decrease while meeting target consumer needs. The outcomes of this study provide necessary insights to develop garments for gynecomastia patients.

• 한국염색가공학회지
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• 제35권2호
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• pp.67-81
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• 2023

This study aims to examine the possibility of using dried Dondropanax morbiferus extract as a functional dye. The leaves and branches of were extracted with distilled water and 30% ethanol, and the dyeability and functionality of silk fabrics were examined according to the color characteristics of the extract and dyeing conditions. As a result of analyzing the ultraviolet and visible light absorption spectrum of the extract, it was possible to confirm the peak of flavonoid belonging to polyphenol, and the peak of riboflavin expressing yellow color was confirmed. Adsorption equilibrium was observed at 4% dyeing concentration and 60 minutes of dyeing time, and as the temperature increased, dyeing amount increased without color change of Y-series. Aluminum mordanting also increased the yellow color. The color fastness of washing and UV irradiation was low, but the color fastness of rubbing was evaluated as relatively good. The silk fabric dyed with the distilled water extract of the leaves showed a 99.9% bacteriostatic reduction against Staphylococcus aureus and Klebsiella pneumoniae, showing excellent antibacterial properties.

• 한국의류학회지
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• 제30권3호
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• pp.386-395
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• 2006

위생용 탑시트로 쓰이는 폴리프로필렌 부직포에 천연고분자이며, 인체친화력이 우수한 가공제인 키토산을 사용하여, 키토산의 분자량과 처리농도를 변화시켜 처리하므로써 기능성 개질화된 부직포의 표면구조와 역학적 성질 및 태의 변화를 살펴보았다. 저분자량의 키토산 처리포가 더 균일하게 코팅되었으며, 분자량과 처리농도가 클수록 부착률이 증가하였다. 키토산 처리포는 굽힘특성과 전단특성이 증가하여 다소 강경해지고, 형태안정성은 고분자량의 키토산 처리 시 더 향상되었다. 표면 촉감은 매끄러워졌으며, 부피감이 다소 향상되었다. 굽힘특성의 증가에 비해 Koshi의 증가가 크지 않으므로 지나치게 뻣뻣해지지는 않았고, 키토산 처리농도가 증가할수록 저분자량의 키토산 처리포가 더 매끄러워졌으며, 벌키성이 부여되었다. 키토산 처리에 의한 위생용 부직포의 태 변화는 미처리포에 비해 전반적으로 THV가 향상되었으며, 키토산 처리농도가 0.5$\%$일 경우 고분자량의 키토산 처리포의 THV가 더 좋았으나, 처리농도가 1.0$\%$일 경우는 저분자량의 키토산 처리포의 THV가 더 우수하였다.

• 대한의용생체공학회:의공학회지
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• 제33권1호
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• pp.39-46
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• 2012

Electrical impedance tomography(EIT) can produce functional images with conductivity distributions associated with physiological events such as cardiac and respiratory cycles. EIT has been proposed as a clinical imaging tool for the detection of stroke and breast cancer, pulmonary function monitoring, cardiac imaging and other clinical applications. However EIT still suffers from technical challenges such as the electrode interface, hardware limitations, lack of animal or human trials, and interpretation of conductivity variations in reconstructed images. We improved the KHU Mark2 EIT system by introducing an EIT electrode interface consisting of nano-web fabric electrodes and by adding a synchronized biosignal measurement system for gated conductivity imaging. ECG and respiration signals are collected to analyze the relationship between the changes in conductivity images and cardiac activity or respiration. The biosignal measurement system provides a trigger to the EIT system to commence imaging and the EIT system produces an output trigger. This EIT acquisition time trigger signal will also allow us to operate the EIT system synchronously with other clinical devices. This type of biosignal gated conductivity imaging enables capture of fast cardiac events and may also improve images and the signal-to-noise ratio (SNR) by using signal averaging methods at the same point in cardiac or respiration cycles. As an example we monitored the beat by beat cardiac-related change of conductivity in the EIT images obtained at a common state over multiple respiration cycles. We showed that the gated conductivity imaging method reveals cardiac perfusion changes in the heart region of the EIT images on a canine animal model. These changes appear to have the expected timing relationship to the ECG and ventilator settings that were used to control respiration. As EIT is radiation free and displays high timing resolution its ability to reveal perfusion changes may be of use in intensive care units for continuous monitoring of cardiopulmonary function.

• 한국의류학회지
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• 제32권12호
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• pp.1848-1856
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• 2008

환자복은 생리적 쾌적성이 저하되고, 위생 문제가 심각하게 대두되지만 기존의 소재로는 쾌적성, 위생성 등 환자복으로서의 요구 성능을 충족하기 어려우므로 실제 환자복 소재로 사용되는 면직물의 성능을 개선하고, 가공 효과와 경제적인 측면을 고려한 기능성 가공을 함으로써 위생적 특성의 변화를 도모하였다. 가공제로는 천연고분자이며 생체적합성이 우수한 키토산과 아울러 키토산의 단점을 보완하면서 부가적인 성능을 기대할 수 있는 은나노 용액을 혼합비율에 따라 처리하여 항균성, 소취성, 수분 특성 등의 위생적 특성의 변화를 검토하였다. 가공처리 직물의 항균성은 키토산/은나노 혼합용액의 처리농도가 200ppm 이상에서 아주 우수한 항균성을 보였으며, 황색포도상구균은 10회 세탁 후에도 항균성이 감소되지 않았으나 폐렴간균에 대한 세탁내구성은 크게 저하되었다. 또한 키토산의 비율이 높을수록 아주 우수한 소취성을 보였으며 공기투과도, 투습도, 수분율은 은나노의 혼합비가 커질수록 다소 감소하였는데 이는 은나노 입자의 부착 때문으로 생각되었다.

• 한국실내디자인학회논문집
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• 제25권2호
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• pp.59-69
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• 2016

This study aimed to understand the importance of applying finishing materials into interior space, and to add meaning to the creation of functional space, associated interior finishing materials with brain science. To achieve this purpose, brainwave(EEG) experiment was conducted. The brainwave appearing when sensing the surface of interior finishing materials with hands was measured. The locations of the electrode were FP1, FP2, F3, F4, C3, C4, P3, P4, O1, O2, F7, F8, T3, T4, T5, T6, CZ, FZ, and PZ and in addition to these, AFZ was added. Eight(8) kinds of finishing materials: metallic material, film paper, lumbar, stone, glass, silk wallpaper, fabric, and paint were used to measure '${\alpha}$-wave against ${\beta}$ wave.' As a result, it was found that the most activated finishing material in term of relaxation was film paper, followed by metallic, glass, paint, fabric, stone, lumbar, and silk wallpaper. To explain in light of this, (1) '${\alpha}$-wave against ${\beta}$ wave' was the most activated at ch1-FP1 and ch2-FP2, and at ch17-AFZ and ch19-FZ, which indicated that metopic-prefrontal lobe showed the highest activation in relaxation. Film paper, among the finishing materials, showed the highest increase in relaxation. (2) In general, '${\alpha}$-wave against ${\beta}$ wave' relaxation was inhibited at ch13-T3 and ch14-T4, and at ch15-T5 and ch16-T6 and the arousal in the temporal lobe was prominent. Silk wallpaper, among the finishing materials, showed the highest arounsal effect. As a result of measuring the superficial touch on the silk wallpaper, which was regarded as the most rough material among the eight finishing materials, the arousal effect of ${\alpha}$-wave against ${\beta}$-wave, among the brainwave characteristics, was found to be the highest. (3) to judge from the scope of this experiment regarding the tactile sensation over the finishing materials, it is considered that the brainwave reaction sometimes appeared contrastive depending on whether the surface was smooth or rough and there also appeared a difference in relaxation and arousal reaction of the brainwave depending on whether the surface was hot or cold, but the sensation on the surface texture was often evaluated differently depending on who you were. For this reason, this study has some limitations.

• 문화기술의 융합
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• 제9권1호
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• pp.725-733
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• 2023

천연물 16종의 물 추출물 및 50% 에탄올 추출물들에 대한 기능성 활성성분 및 면포 염착효과를 알아본 결과, 색도 강도는 차이가 있었으나 적색 6종, 황색 5종, 오렌지색 2종 및 녹색 3종 이었고, 대체로 50% 에탄올 추출액의 색도가 높고 선명하였다. 이와 같은 천연물들의 물 추출물 및 50% 에탄올 추출물에 면포 거즈를 2일간 침지하여 염색한 결과 염색효과는 대체로 양호하였으며, 실온에서 건조 후 개봉하여 보관하여도 색도의 퇴색 감소는 거의 없는 것으로 관찰되었다. 천연물 16종의 물추출물의 pH는 중성 내지는 약산성으로 피부에 부작용이 없는 중성~약산성 범위였다. DPPH 유리라디칼 억제 항산화효과는 시료 별로 50% 에탄올 추출물의 효과가 물추출물에 비하여 양호하였고, 특히 황금, 유백피, 유근피, 박하, 홍화 등의 효과가 양호하였다. 폴리페놀 함량도 대체로 50% 에탄올 추출물의 함량이 물 추출물에 비하여 높은 경향이었고, 특히 금은화, 유근피, 황금, 유백피, 홍화 등의 효과가 양호하였다. 따라서 천연물 16종 추출물에 대한 항산화 활성과 여성질염 예방의 상관 관계를 규명하고자 하였다.

• 한국재료학회지
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• 제24권9호
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• pp.474-480
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• 2014

Process conditions for the impregnation of polycarbosilane preceramic polymer into SiC-based composites were investigated. Two kinds of preceramic polymer (PCP) was impregnated into SiC-fiber fabrics with different solvents of n-hexane and divinylbenzene (DVB). Both microstructural observations and mechanical tests were conducted to evaluate the impregnation. The matrix phases were particulated in the case of hexane solvents. Apparent relative density of the matrix was about 78.8%. The density of matrix was increased to about 96.1-98.8% when the DVB was used; however, brittle fracture was observed during a bending test. The modulus of toughness was less than $0.74J/m^3$. The fabric impregnated with a mixed PCP-dissolved solution showed intermediate characteristics with relative high density of filling (apparent density of ~96.1%) as well as proper bending behavior. The modulus of toughness was increased to about $5.31J/m^3$. The composites developed by changing the precursor and solvent suggested the possibility of fabricating SiCf/SiC composites without a fiber to matrix interphase coating.

• 한국의류산업학회지
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• 제14권4호
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• pp.588-596
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• 2012

This research was intended to design an experimental girdle with thermal insulation function for adult women in their 20s. The design of the experimental girdle was based on the pattern of commercially available girdle. The final pattern of the experimental girdle was established according to the drawing equations determined based on the result of appearance evaluation. The equations were (waist circumference${\times}0.88$)/2 for waist circumference, (hip circumference${\times}0.77$)/2 for hip circumference, and (thigh circumference${\times}0.85$) for thigh circumference. In order to develop a heating device, the most effective fabric heater was adopted based on the experiments about the number of caron fibers, heater size and attachment site. Three heaters-one with a size of $14.5{\times}9.5$ cm, and the other two with the size of $8.0{\times}15.0$ cm-were attached to the areas corresponding to the lower abdomen and the hip, 5 cm below the waist. A heater was developed by connecting these heaters to a controller, 2 batteries (7.4 V 2000 mAh lithium polymer batteries) and a switch (for mode conversion between high/medium/low temperatures). The heater was integrated into the inside of the girdle, so that attachment and detachment were possible without the change of appearance. The tentative configuration plan was proposed for the development of a functional smart girdle with an excellent thermal insulation effect.