• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2011.11a
• /
• pp.36-36
• /
• 2011

안개나무 목질부의 열수추출물을 사용하여 한지를 염색하였다. 안개나무 목질부의 추출물을 동결건조하여 만든 염료 분말을 사용하여 제조한 0.0002%(wt) 농도의 염액은 198 nm에서 0.39의 흡광도를 278 nm 에서 0.10의 흡광도를 가지는 자외가시광선 흡수 피크를 나타내었으며 무매염으로도 한지에 염색이 잘 되었다. 염색된 한지는 황색 계열의 색을 나타내었으며, 명반 매염을 하면 $a^*$ 값과 $b^*$ 값이 동시에 증가하여 주황색을 띠는 것을 알 수 있고, 초산동 매염을 하면 $a^*$ 값이 증가하지만 $b^*$ 값이 감소하여 적색을 좀 더 많이 띠게 되었다. 염화철 매염을 하면 $b^*$ 값만 크게 감소하여 녹색계열의 색을 나타내었다. 닥섬유에 염색시 온도가 증가함에 따라서 염착량은 감소하는 경향을 보였고, 양이온화 섬유를 사용하면 염착량이 크게 향상되나, $a^*$값이 더 크게 증가하여 색상이 적황색으로 변하였다. 표면 전하밀도와 염착량은 정비례의 관계를 나타내었으며, 양이온화 정도가 높아질수록 제조한 색한지의 광견뢰도는 악화되었다.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.31 no.5 s.164
• /
• pp.659-669
• /
• 2007

The purpose of this study was to investigate the degradation of silk fabrics dyed with gardenia and sappanwood by Ultraviolet Light(UV). To asses the effect of uv on dyed silk fabrics, physical and chemical properties of samples were explored. K/S value rapidly decreased with increasing exposure time. Mordanting improved ultraviolet-cut ability and the sappanwood dyed samples were superior to those of gardenia dyed in ultraviolet-cut ability. Color progressively faded away as uv exposure time increased, accordingly, $L^*,\;a^*,\;b^*$, H/VC, ${\Delta}E$ were changed. Morphological change observed with SEM represented degradation of silk fabrics from the outer fibril to the inner fibril. Tensile Strength abruptly decreased as uv exposure time increased and the mordanted samples showed higher tensile strength than the unmordanted. FT-IR analysis confirmed that main peaks at 3297 and $1704cm^{-1}$ band for silk fabric were due to N-H and C=O stretching, gardenia peaks at 1654 and $668cm^{-1}$ band representing C=O(ester), C=C(alken) and O-C=O(carboxylic acids) of crocin and sappanwood peaks at $1715cm^{-1}$ band representing C=O(cyclic keton) of brazilin appeared on the samples exposed for 14 days, but these peaks indicating colorants after 28 days of uv exposure faded away due to prolonged exposure of uv.

• Journal of the Korean Home Economics Association
• /
• v.46 no.9
• /
• pp.1-6
• /
• 2008

The purpose of this study was to investigate the changes in the property of nylon fabrics dyed with safflower red and yellow colorants under Ultraviolet(UV)-light. For this purpose, nylon fabrics dyed with safflower red and yellow colorants were compared with each other after uv-light exposure in terms of K/S value, color changes(${\Delta}E$), morphology, and strength retention. K/S value rapidly decreased with increasing exposure time, but K/S value of the samples dyed with safflower red colorants decreased less than that of samples dyed with safflower yellow colorants. In color changes, as increasing exposure time, $L^*$ increased, $a^*$ decreased, $b^*$ increased, and so ${\Delta}E$ increased in samples dyed with safflower red colorants. In color changes, as increasing exposure time, $L^*$ increased, $a^*$ and $b^*$ decreased, and thereby ${\Delta}E$ increased in the samples dyed with safflower yellow colorants, indicating fading away by uv-light and changes of hue, value and chroma value. But the color change of samples dyed with safflower yellow colorants was less than that of samples dyed with safflower red colorants. SEM pictures showed a severe degradation by uv exposure, regardless of colorants type. Tensile strength slowly decreased until 14 days, and rapidly decreased until 28 days. Strength retention of the samples dyed with safflower yellow colorants was higher than that of the samples dyed with safflower red colorants.

• Proceedings of the Korean Fiber Society Conference
• /
• 2001.10a
• /
• pp.71-74
• /
• 2001

폴리에스테르 섬유는 섬도가 가늘어질수록 전체 표면적이 증가하므로 염색시 초기 염색속도가 빨라져 불균염의 원인이 되며, 겉보기 염착량은 감소하여 많은 염료를 사용해야 된다. 그래서 해도형 초극세 폴리에스테르 섬유는 레규라 폴리에스테르보다 세탁견뢰도 및 습마찰견뢰도가 현저히 저하하게 된다[1-3]. 또한 초극세 폴리에스테르 섬유는 환원세정을 하더라도 마무리 열고정이나 가공시에 가해주는 열로 인해 열이행이 많이 일어나는 것이 세탁견뢰도를 저하시키는 원인으로 지적되고 있다[4, 5]. (중략)

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2012.03a
• /
• pp.42-42
• /
• 2012

팥에 함유되어있는 색소와 관련된 연구 중에서는, 검정팥의 색소성분을 분리하여 delphinidin-3-glucoside(D-3-G)로 보고한 Sasanuma의 연구와 검정팥 껍질속에 포함된 안토시아닌의 함량을 평가한 Yoshida의 연구 결과 등이 있다. 본 연구에서는 검정팥 종피에서 색소를 추출하여, 적정 염색조건을 설정하였으며, 매염제별 색상변화 및 견뢰도를 측정하는 과정을 통해 염색 특성을 파악하여 새로운 천연염재로서의 활용 가능성을 진단하였을 뿐만 아니라 응용 연구를 위한 기초자료의 확보에 주안점을 두었다. pH에 따른 염색성에서는 견직물의 경우 pH 4에서 가장 염착량이 많았고, 면직물의 경우에는 주어진 범위내에서는 pH가 높을수록 염착량이 많았다. 염색온도와 시간에 따른 염색성은, 견직물의 경우, 염색온도 $80^{\circ}C$에서는 시간이 경과할수록 K/S 값이 크게 나타났으며, 면직물의 경우도 견직물과 비슷한 결과로 온도가 높아질수록 염색시간이 경과될수록 K/S 값이 크게 나타났다. 견직물에 대한 매염제 종류별 표면색의 변화에서는 Fe 매염포만 $YR{\rightarrow}Y$ 로 변화되었을 뿐 다른 매염제에서는 매염 후에도 색상 변화는 크지 않았다. 매염처리 전 견직물의 일광 견뢰도는 무매염이 4~6등급, Al 처리포는 4~5등급, Cu와 Sn은 3~4등급으로 나타났고 Fe는 2~3등급으로 가장 낮게 나타났으며, 세탁견뢰도에서는 무매염 2등급, 매염제 처리의 경우 2~3등급으로 나타났다. 무매염 면직물의 일광견뢰도는 1~2 등급, Fe 매염은 2~3등급, Cu 2등급 Al과 Sn은 1~2등급으로 매염처리에 의해 전혀 개선되지 않았으며, 세탁견뢰도의 경우 Cu매염이 4등급으로 양호하게 나타났으며 무매염, Al, Sn과 Fe는 3등급으로 나타났다.

• Current Research on Agriculture and Life Sciences
• /
• v.30 no.2
• /
• pp.76-81
• /
• 2012

In this study the natural colorant was extracted from black bean seed coat in aqueous solution and used to dye silk and cotton fabrics. To obtain the optimal dyeing conditions it was examined at various dyeing condition (temperature, pH, time and liquor ratio). The dyeing behavior and the depths of shade which were evaluated in terms of K/S and CIELAB color difference values of the dyed and mordanted fabrics were also investigated. The dyeing fastness evaluated standard light and wash fastness tests. The obtained results were as follows ; The most K/S value of silk and cotton fabrics were obtained when the pH was 4.0 and 4.8, respectively and it increased slightly with dyeing time passes when the dyeing temperatures were at $40^{\circ}C$ and $60^{\circ}C$ but, it increased at $80^{\circ}C$. The color of silk fabrics changed from yellowish red to yellow at only Fe mordanting among various mordanting. Sn and Ti mordanting of silk fabric and only Ni mordanting of cotton fabric increased the $L^*$ values, but the others decreased. The light fastness of silk fabrics showed 4-6 grade without mordant, 4-5 grade with Al, 3-4 grade with Cu and Sn, and 2-3 grade with Fe as mordant, and that of cotton fabrics showed 1-2 grade without mordant, 2-3 grade with Fe, 2 grade with Cu, 1-2 grade with Al and Sn as mordants. All mordanting coluld not improve the light fastness of fabrics. Washing fastness(fade) of silk fabrics showed 2 grade without mordants and 2-3 grade with mordants and those of cotton fabrics showed 4 grade with Cu, 3 grade without mordant and with Al, Sn and Fe. All of the washing fastness(stain) of both fabrics showed 4-5 grade.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.32 no.3
• /
• pp.486-493
• /
• 2008

Safflower red colorants extracted by two solvents including the traditional ash solution and $K_{2}CO_{3}$ solution was used for dyeing cotton, ramie, viscose rayon, silk, wool, and nylon fabrics. The effects of extraction solvents on the reflectance, K/S value, and color properties of the dyed fabrics were investigated. Wash/dry cleaning and light colorfastness were evaluated. Reflectance curves of cotton, ramie, viscose rayon, and silk fabrics dyed with red colorants extracted by $K_{2}CO_{3}$ solution were similar, showing the maximum absorption at 520nm, to that of the dyed fabrics with red colorants extracted by ash solution. The reflectance curves of wool and nylon fabrics were different, showing the maximum absorption at 400nm. K/S values of dyed fabrics with red colorants extracted by $K_{2}CO_{3}$ solution were higher than that by ash solution with the exception of nylon. $L^{*},\;a^{*},\;b^{*}$, and $C^{*}$ of the dyed fabrics with red colorants extracted by $K_{2}CO_{3}$ solution were higher than that by ash solution except for $L^{*}$ of nylon and $b^{*}$ of viscose rayon. Color difference(${{\Delta}E}^*$) of the dyed fabrics between ash solution and $K_{2}CO_{3}$ solution increased in the order named as cotton, silk, ramie, viscose rayon, wool, and nylon. Regardless of extraction solvents, safflower red colorants produced RP color on cotton, ramie, and nylon, R color on viscose rayon and silk, and YR color on wool. Wash/dry cleaning fastness of the dyed fabrics was high above 3/4 rating but light fastness was very poor. It is considered that the use of $K_{2}CO_{3}$ solution instead of the traditional ash solution would be more effective in terms of color reproducibility and extraction process.

• The Research Journal of the Costume Culture
• /
• v.19 no.1
• /
• pp.96-103
• /
• 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.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.31 no.12
• /
• pp.1682-1688
• /
• 2007

The effects of cultivar and DAPs on the lignin content and dyeability of the kenaf fibers were investigated. Four kenaf fiber samples were prepared from two cultivars, Tainung 2 and Everglades 41, and their 60 and 120 DAPs(days after planting) for the experiments. The lignin contents of the kenaf fibers of Tainung 2(T2) and Everglades 41(E41) were $11.29{\sim}12.78%$. Both T2 and E41 kenaf fibers had comparable amount of lignin, and klason lignin of the fibers was $2.5{\sim}3$ times as much as much as acid-soluble lignin. In both T2 and E41, 120 DAPs kenaf have 1% more lignin than 60 DAPs kenaf. The moisture regains of the four kenaf fiber samples were almost the same as $10.25{\pm}0.05%$. The absorbances of residual solution after dyeing for $1{\sim}180$ minutes with Red 81 at maximum wavelength 520 nm and Green 26 at 600 nm were measured. Comparing to Green 26, the dyeing rate of Red 81 was rapid and equilibrium state was reached in 12 minutes. The CIE $L^*,\;a^*, \;b^*,\;{\Delta}E$ and K/S values of the kenaf fibers dyed with Red 81 and Green 26 were measured as well. The dye exhaustion ratio of 60 DAPs kenaf was higher than that of 120 DAP.