• 한국염색가공학회지
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• 제18권4호
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• pp.20-27
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• 2006

Lyocell is a not only environmentally-friendly but also very advantageous fiber. When Lyocell is soaked in water, its wet tenacity does not decrease and elongation and moisture regain of it are better than cotton. However, one drawback of lyocell is its fibrillation. The fibrills of lyocell were generated during wet process such as scouring and dyeing deteriorates the dyeing color depth and the appearance of fabric. The purpose of this study was to decrease the fibrillation tendency of lyocell fabric using crosslinking agent, epichlorohydrine(ECH). The effects of NaOH scouring and ECH crosslinking were observed. The different types of ECH addition methods to lyocell and the various concentrations of ECH in crosslinking reaction onto dyeing characteristic and fibriallation were investigated. Weight loss and whiteness index of crosslinked lyocell by ECH were examined. K/S values of ECH treated lyocell fabrics dyed with reactive dye were measured and SEM images of untreated and treated lyocells were observed extensively to define the fibrillation tendency. The results were as follows ; 1) ECH treatment showed the effect of weight loss and scouring because ECH crosslinking reaction was conducted in alkaline condition. 2) The increase in ECH concentration from 5 to 30% does not affected K/S value changes. 3) ECH crosslinking can effectively prevent the fibrillation tendency of lyocell.

• 한국염색가공학회지
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• 제29권3호
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• pp.122-130
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• 2017

In the direct digital textile printing process, the pre-treatment process is an essential condition for products by forming a clear pattern by sticking and penetration of DTP dye without spreading on the fabric. Recently, pre-treatment agent is changing from high viscosity to low viscosity in order to reduce defects of fabric during pre-treatment process. In this study, pre-treatment agent of acrylic polymer with low viscosity(less than 50cps) was prepared according to the solid content of the polymer, pre-treated on the cotton fabric, and direct DTP printing was performed to compare the color and sharpness. As a result, it showed high color at a viscosity of 50cps or less. When the solid content of the polyacrylic acid having a high molecular weight(A1) was 2.5wt%, when the solid content of the polyacrylic acid having a low molecular weight(A2) was 1 - 1.5wt%, the color was the best. And when the solid content of A1 and A2 was 1.5wt%, the degree of spreading was small and A1 was superior to A2 at the sharpness.

• 한국염색가공학회지
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• 제34권3호
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• pp.173-184
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• 2022

In this study, the TPU film was laminated on an aramid fabric or circular knits in order to implement an air cushion material that can respond to high impact forces in case of a fall and is easy to expand. To increase the bonding strength between the fabric layer and the film layer, a primer layer was formed in two ways: one for thermally bonding and laminating PET film and two for coating and aging hot melt type PUR adhesive. The tensile strength of the aramid air cushion was 2.5 times higher than that of the circular knits, but the tensile elongation of the aramid air cushion was very low compared to that of the circular knits. The tear strength of the aramid air cushion was about twice or more superior to that of the circular knits, the primer treatment method was good at A, and the peel strength was excellent at method A. The aramid air cushion was the lightest in weight. Summarizing the above results, it was best to combine the air cushion material with aramid woven fabric and primer treatment method A to cope with the high impact force applied when falling.

• 생명과학회지
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• 제18권10호
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• pp.1331-1335
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• 2008

여러 가지 난분해성 색소에 대하여 탈색능을 나타내는 Klebsiella pneumoniae WL-5이 염색폐수처리장의 활성슬러지로부터 분리되었다. 이 세균은 정치배양과 at pH 6-8 및 $30-35^{\circ}C$에서 높은 탈색능을 나타내었다. Congo Red색소에 대해서는 $200\;{\mu}M$ 농도에서 12시간 배양하였을 때 90% 이상이 탈색되었고, Malachite Green, Brilliant Green, Reactive Black-5에 대해서는 $10\;{\mu}M$ 농도에서 80% 이상이 탈색되었지만, Reactive Red-120, Reactive Orange-16, Crystal Violet에 대해서는 $10\;{\mu}M$ 농도에서 각각 46%, 25%, 13%의 비교적 낮은 탈색능을 나타내었다. 트리페닐메탄계 색소는 세포표면에의 흡착에 의한 탈색을 나타내었고, 아조계 색소는 지금까지 알려져 있지 않는 새로운 효소반응계에 의해서 탈색된다는 것을 제시하였다.

• 한국염색가공학회지
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• 제23권2호
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• pp.118-130
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• 2011

In this study, hydrophilic polyurethane (PU) was synthesized by one shot process to get good non-swelling effect and to keep high breathability using reactive silicone oil of mono terminal and bi-terminal types. We also blended non reactive silicone oil with pure hydrophilic PU to compare non-swelling effect and breathability with hydrophilic PU synthesized by the two types of reactive silicone oils. The hydrophilic films were analyzed by nuclear magnetic resonance (NMR) spectroscopy, scanning electron microscope (SEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray photo electron (XPS) spectroscopy, energy dispersive spectrometry (EDS), breathability, waterproofness, tensile strength, contact angle and swelling effect. The results showed that the film made by hydrophilic PU which was synthesized with mono terminal type silicone oil provided good non-swelling effect and acceptable moisture permeability due to the modified surface properties.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 봄 학술발표회 논문집
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• pp.202-205
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• 2003

$\beta$-Sulfatoethylsulfone기를 갖는 일시적 수용성 반응성 분산염료는 분산제를 첨가하지 않고도 염욕내에서 단분자 상태를 유지할 수 있으며 염색 공정 중 온도와 pH조건의 변화에 따라 Scheme 1과 같이 비수용성 vinylsulfone form으로 변환된다[1]. 이 때 vinylsulfone기는 섬유와 화학결합을 할 수 있는 대표적인 반응기이므로 이 염료는 일시적 수용성 분사염료와 반응성 염료의 두 성질을 동시에 지닌다[2]. (중략)

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 봄 학술발표회 논문집
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• pp.413-414
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• 2003

폴리아마이드 섬유, 즉 나일론 섬유에 응용될 수 있는 여러 종류의 이온성 염료들 중에서 섬유분자와 염료의 결합특성에 기인하는 산성염료의 사용이 현재 주를 이루고 있지만 결합력에서 기인하는 염료의 탈착으로 말미암아 색상강도의 저하 및 첨부포에의 오염이 문제가 되고 있다. 또한 함금속 염료를 이용한 방법에서는 세탁 및 일광에 대한 견뢰도 향상은 얻을 수 있지만, 원하는 수준의 견뢰도를 얻기 위해서는 후처리의 적용도 고려되어진다. 반응성 염료$^{1.2)}$ 를 이용한 염색은 셀룰로오스 섬유에의 적용이 대부분이며, 양모 및 견에 대한 응용도 발표되고 있다. (중략)

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2003년도 생물공학의 동향(XIII)
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• pp.463-467
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• 2003

Fundamental experiments were carried out about color removal efficiency of dyeing wastewater using a $bioreactor-TiO_2/UV$ reactor system. Color removal efficiencies of the Reactive Black 5 in the system were found to bo more than 80% in changes of dilution rate 0.04 to $0.08hr^{-1}$. In this research, a new color removal system of dying wastewater will be proposed after more investigation of decolorization efficiencies about different dyes and condition.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2009년도 학술발표대회
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• pp.195-196
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• 2009

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 1998년도 가을 학술발표회논문집
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• pp.118-121
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• 1998

양모는 풍후와 광에 의해 모단(tip)의 소수성 부분이 많이 상해되는 반면 모근(root)은 상대적으로 안정하다. 이로 인하여 모단에 비하여 모근에서 염료의 확산이 더 빠르기 때문에, 양모염색에 있어서 tipping현상이 나타나게 된다. 반응성염료로 양모를 염색하는 경우 전형적인 tippy-dyeing이 일어난다. 일반적으로 이들은 두 개 이상의 수용성기를 가지므로 친수성이 강하여, 모근보다 모단에 더 많이 흡진된다. (중략)