• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2008년도 제38차 학술발표대회
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• pp.37-39
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• 2008

The purpose of this study is to improve the defects of DPP fabric by heat setting and to describe the change of physical properties of DPP fabrics. The thermosetting was carried out in autoclave from 100 to 140$^{\circ}C$ temperature range for 10min.. In this study, we investigated the effect of the thermosetting temperatures on the structural, thermal, mechanical properties and dyeability of DPP fabrics. The melting peak of multi peak changed to single peak with an increased thermosetting temperatures. The melting energy(J/g), the tensile strength and elongation were found to increase with increasing temperature of heat setting. The diffraction peak at Bragg angle(2${\theta}$) about 13.8$^{\circ}$ were very strong, and diffraction intensity, d-spacing and half-width decreased with increasing thermosetting temperatures. On the other hand, the dyeability(K/S) and crease recovery decreased with an increasing thermosetting temperatures.

• 한국염색가공학회지
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• 제17권1호
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• pp.14-19
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• 2005

Study on the use of enzymes for textile wet processing has been very active. The exploratory research conducted herein is related to the bioscouring process for cotton fabric. The optimum concentration of alkaline pectinase(BioPrep) was in the range of 0.05～0.2 g/l, the proper treatment time was 30～60 minutes, the appropriate treatment temperature was $60^{\circ}C$ for both the batch method and the padding method. The simultaneous desizing/bioscouring by padding method did not give water absorbency as good as the bioscouring after desizing. Color of fabrics which were bioscoured and dyed with direct dyes and a reactive dye was just a little darker than that of NaOH scoured one. K/S and Lab values of the bioscoured fabrics, regardless of the degree of water absorbency, were quite similar to each other.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2009년도 학술발표대회
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• pp.118-119
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• 2009

As the rapid development of the electronics, the demand for portable electronics and wireless sensors is growing faster, also with the increased needs of one material which can power it automatically, and then power the electrical devices. The piezoelectric effect of the PVDF material can be used for this. So in this paper, PVDF multilayer films were made for this aim. Make the PVDF / DMAc solution in the 10% concentration; use the spin coater technique to make films with the optimum process parameters: the spin rate is 1260rpm; the spin time is 70s; the dry temperature is 100$^{\circ}C$; the dry time is 30mins. And also, for obtaining the higher $\beta$-phase crystallinity, put the Ca(NH3)2.4H2O into the PVDF / DMAc solution system.

• 복식문화연구
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• 제21권5호
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• pp.699-707
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• 2013

The natural dyeing of silk fabric with Thuja orientalis extract was investigated. The proper colorant concentration, dyeing temperature, dyeing time, and pH for the dyeing of silk fabric with Thuja orientalis extract were 100% v/v, $80^{\circ}C$, 80 minutes and pH 3, respectively. In various mordanted methods, the K/S values of mordanted methods were higher than those of unmordanted methods with increasing mordant concentration. Light colorfastness and washing colorfastness of Cu or Fe mordanted silk fabric was improved by mordanting. The antibacterial properties of dyed and mordanted silk fabric showed a high reduction rate, and Thuja orientalis extract was showed effective bacterial reduction. The dyed and mordanted fabric with Thuja orientalis extract showed a superior ultraviolet protection property.

• Journal of Chest Surgery
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• 제41권5호
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• pp.550-562
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• 2008

배경: 조직공학분야에서 이종조직의 세포성분에 대한 면역반응을 없애기 위한 기본적인 과정으로 조직의 탈세포화에 대한 연구가 있어왔다. 본 연구는 기존에 탈세포화에 효과적이었다고 보고되었던 방법들을 변형 혹은 재현해 보고, 이를 통해 치적의 탈세포화를 얻을 수 있는 조건을 찾고자 하였다. 대상 및 방법: 돼지의 대동맥 및 폐동맥판막, 대동맥 및 폐동맥벽, 심낭을 탈세포화 세정제(detergents)에 대한 농도 및 배양시간, 온도조건, 용질에 대한 삼투압 등을 달리하고, 여러 탈세포화용액 및 그 조합을 통해 단일단계 및 여러 단계의 방법으로 배양하여 탈세포화를 시행하였다. 이렇게 탈세포화 실험을 마친 조직은 hematoxylin-eosin (H&E) 염색을 통해 탈세포화의 정도와 세포 외 기질의 보존 정도를 평가하였고, 일부탈세포화된 조직에서는 이종항원면역제거 정도를 파악하는 alpha-Gal 염색과 DAPI 염색을 동시 시행하여 관찰하였다. 결과: Polyethylene glycol이나 peracetic acid를 이용한 방법에서는 탈세포화가 되지 않았다. 단일단계방법으로는 sodium deoxycholate (DOA), sodium dodesyl sulfate (SDS), Triton X-100, SDS와 Triton X-100을 섞은 용액에서, 다단계방법으로는 저장성 완충용액 ${\rightarrow}$ X-100 ${\rightarrow}$ SDS, DOA ${\rightarrow}$ 저장성 완충용액 ${\rightarrow}$ SDS, 저장성 완충용액 ${\rightarrow}$ SDS에서 탈세포화가 이루어 졌다. DOA는 다른 탈세포화 방법에 비해 세포 외 기질의 파괴가 심하였고, 특히 실험온도가 높아질 수록 세포 외 기질의 파괴가 더욱 현저함을 알 수 있었다. 사용되는 화학물질의 종류, 양, 처리시간 및 세포 외 기질의 파괴 정도를 고려하여 지속적으로 재현 가능한 탈세포화에 비교적 적합한 조합 및 조건은 단일단계방법으로 $4^{\circ}C$에서 SDS와 Triton X-100를 섞은 저장성용액에서 24시간 배양하는 방법과, 다단계방법으로 저장성 완충용액과 SDS를 연속적으로 사용하는 방법으로, $4^{\circ}C$에서 $6{\sim}8$시간 이상 저장성 완충용액에 처리한 후, 0.25% SDS가 섞인 저장성 완충용액에 16시간 배양 후 등장성 완충용액에 처리하는 방법이었다. 결론: $4^{\circ}C$에서 SDS 과 Triton X-100을 섞은 저장성 완충용액에서 24시간 배양하는 단일단계방법이나, 저장성완충용과 SDS를 연속적으로 사용하는 다단계 방법을 통해 세포 외 조직을 비교적 잘 보존하면서 적은 수의 탈세포화 용액을 사용하여 효과적인 탈세포화를 얻을 수 있었다.

• 한국의류학회지
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• 제29권2호
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• pp.279-285
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• 2005

In order to activate the characteristics of charcoals in fiber systems, this study was carried out to experiment with the particle size from two micrometers to ten micrometers of charcoal powders on silk fabrics. The results obtained were as follows; The silk fabrics were dyed with gray color by charcoals effectively. The K/S value, that is indicative of the dye affinity, became higher as the increase of dyeing temperature, dyeing time, and dyeing concentration. Te dyeing effects were the highest with 50%(o.w.f.) of charcoals at $100^{\circ}C$ for 120 minutes in this experiments, It was observed the surfaces of silk fibers were mainly adcorbed with charcoal powders of the particle size from two micrometers to four micrometers by scanning electron microscope. Dyed silk fabrics showed comparatively low fastness to the fade of launding, the stain of the treatment of perspirations, and the strain of water fastness test, but good fastness to the stran of laundering, te drycleaning, the fade of treatment of perspirations, and the fade of water fastness test. In connection with the functional properties of dyed fabrics, the deodorizations were drastically improved, and the far-infrared emissions improved highly, and also the antibacterials were comparatively good.

• 한국의류학회지
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• 제29권12호
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• pp.1608-1618
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• 2005

본 연구는 꼭두서니와 그 표준 색소인 알리자린으로 염색한 직물에 조건적 퇴화를 유도하고, 가스 크로마토그라피 질량분석기(GC-MS)를 이용해 퇴화물을 분석하여 이를 선행연구에서 밝혀진 표준 알리자린 색소의 퇴화물과 비교함으로써 대조구로서의 꼭두서니 염료의 정보를 완성하는데 그 목적을 둔다. 아울러 퇴화 전후 염직물의 색차를 측정하여 조건퇴화에 따른 색의 변화를 조사하였다. 퇴화조건은 상온 (RT), 저온$(7^{\circ}C)$ (LT), 고온$(100^{\circ}C)$(OV)의 세 종류의 온도 조건과 염료 폐수처리 용도로 활용되고 있는 $H_2O_2/UV$법 (PER)을 사용하였다. 퇴화시간은 6시간, 24시간, 48시간, 1주, 2주, 4주 각각을 측정하였다. 꼭두서니와 알리자린 염직물 모두 퇴화 전후의 시료에서 alizarin(10.1분)이 검출되었다. 꼭두서니와 알리자린 염직물 모두 퇴화 후 benzoic acid(4.7분), 2,4-di-tert-butylphenol(6.8분), phthalic anhydride(5.8분)가 검출되었다. 꼭두서니와 알리자린 염직물 모두 퇴화 후 붉은색과 노란색이 감소하였다. 꼭두서니 염직물보다 알리자린 염직물의 경우 퇴화 전후의 색차가 더 심하였다. 그러나 가장 퇴화조건이 강한 PER퇴화조건 하에서는 꼭두서니 염직물의 색차가 1주 경과 후에도 매우 심하게 나는 것을 볼 수 있었다. 본 연구의 결과꼭두서니와 그 표준 색소로 염색한 직물이 퇴화할 경우에도 선행연구에서 밝혀진 알리자린의 퇴화물인 benzoic acid, 2,4-di-tert-butylphenol, phthalic anhydride가 검출됨을 확인하였다. 따라서 이들 화합물은 갈변되어 고유의 색을 알 수 없는 출토복식의 염료를 판정할 때 꼭두서니 염료의 사용여부를 확인할 수 있는 대조구 화합물로 사용될 수 있을 것으로 사료된다. 퇴화 전후의 색차에 대한 측정결과는 퇴화에 따른 염료의 색 변화에 대한 결과이다 출토복식의 갈변현상은 염료의 변색과 더불어 토양 유기물에 의한 착색도 기인하므로, 출토복식의 색상 변화를 실질적으로 조사하기 위해서는 본 연구의 결과와 함께 토양유기물에 의한 착색에 대한 연구가 병행되어야 할 것으로 본다

• 한국염색가공학회지
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• 제34권3호
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• pp.135-145
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• 2022

In this study, the dyeability of 0.06-denier-per-filament (dpf) ultrafine sea-island-type nylon knitted fabric was investigated and compared with that of 1.0-dpf general nylon with respect to four types of dyes. In particular, leveling, milling, half-milling, and metal-complex dyes were compared at concentrations of 0.5%, 1.0%, 2.0%, 4.0%, and 8.0% on-weight-fabric (o.w.f). In each case, staining was performed at 100 ℃. The dyeabilities of the materials were compared in terms of the depth of color as defined by the ratio of the absorption coefficient (K) to the scattering coefficient (S). Results indicated generally low K/S values for both the 0.06-dpf ultrafine sea-island-type nylon and 1.0-dpf general nylon. In terms of the dye type, the milling and half-milling dyes exhibited K/S values of ≥20 for all colors of yellow, red, and blue for the 0.06-dpf ultrafine yarn sea-island-type nylon, which were superior to those of the other dye types. Hence, the milling and half-milling dyes are considered more suitable than the other dyes. Further, a comparison of dye fastness and compatibility revealed that the half-milling dye was the most suitable dye for the 0.06-dpf ultrafine sea-island-type nylon.

• 한국염색가공학회지
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• 제18권3호
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• pp.49-58
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• 2006

The purpose of this study was to examine the effect of covering yarn's twist on mechanical properties of knitted fabrics of composite yarns with single covering process. Four yarns that were used in this study: two different composite yarns made from the four kinds of cotton and functional polyester-(Poly-A) with the ratio of 52:48, and the rest two yarns are the original cotton 100% yarn and the poly-A 100% yarn. The two kinds of composite yarns, CP1 and CP2, were processed on the single covering process. CP1 was applied on the single covering process with S-800 tpm, where Poly-A was used as covering yarn and cotton was used as core yarn. CP2 was applied on the same process as CP1 except that Poly-A had been applied on the two-for-one twisting process with S-400 tpm on the previous step. Sixteen mechanical properties of all the four knifed fabrics knitted under the same knitting conditions were measured by KES-FB system with the outer knit condition. And 3D CAD dressmaking simulations, which were driven by some of the mechanical properties, were presented. The results were as follows: CP2 had high RT values with twisting of covering yarn. CP2 also had high B, 2HB values because of higher linear density. SMD was affected rather by twisting of covering yarn than by fine hair of the cotton surface. Twisting of covering yarn made it decreasing T value and increasing W value. Dressmaking 3D CAD simulations showed that there are buckling effects on CP2 because of high bending rigidity and shear rigidity.

• 복식문화연구
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• 제19권1호
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• pp.96-103
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• 2011

It is well known that the Petasites japonicus has been used for a long time medicine for the treatment of allergic diseases such as lacquer poisoning. However, the exact components and dyeing properties of its effects is still not known. Therefore, the purpose of this study was to investigate the dyeing property and ultraviolet-cut ability of silk and nylon fabrics that was dyed variously with the Petasites japonicus. The Petasites japonicus extract was done by boiling with distilled water at $100^{\circ}C$ for 1 hour. As mordanting agent, we used Aluminum potassium sulfate ($AlK(SO_4)_2{\cdot}12H_2O$), Copper(II) sulfate pentahydrate ($CuSO_5{\cdot}5H_2O$), Iron(II)Chloride ($FeCl_2{\cdot}4H_2O$). The best K/S value of dyeing temperature and time, all the fabrics were $100^{\circ}C$, 90min. Silk fabric was dyed yellow(0.8Y 7.6/2.2) and nylon fabric was dyed reddish yellow(10.1 YR 7.4/3.0). Silk fabric and nylon fabric was changed greenish yellow on mordanting with $CuSO_5{\cdot}5H_2O$ and $FeCl_2{\cdot}4H_2O$ respectively. And the colorfastness of washing and dry-cleaning was improved by using mordanting agent(4~5 grade). Ultraviolet-cut ability(UV-B) was showed more 90% in dyed nylon fabrics.