• 한국염색가공학회지
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• 제16권1호
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• pp.10-17
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• 2004

Wool fabrics were treated with deep UV for 10 to 30min and then dyed with C.I. Acid Yellow 99, C.I, Acid Red 57 and C.I. Acid Blue 62. FT-IR and XPS have been used to prove the chemical composition of wool fiber surfaces. The mechanical property and colorfastness were also studied. The intencities of the peaks of C=O group at $1700^cm^{-1}$ were increased with increasing irradiation time. Relative $O_{1s},\; N_{1s}\; and\; S_{2p}$ intensities increased considerably and oxygen was incorporated in the form of CO and COO on the fiber surface. The dye uptakes of wool fabrics dyed with three acid dyes were proportional to irradiation times and in inversely proportional to irradiation distances. It was found that the tensile strength of wool fabrics were gradually deteriorated with the UV irradiation times. The colorfastness, such as washing, light and rubbing, of UV irradiated wool fabrics dyed with acid dyes were good.

• 한국염색가공학회지
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• 제28권2호
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• pp.70-76
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• 2016

Silver nanoparticles(AgNPs) were attached to wool fibers using glycidyltrimethylammonium chloride(GTAC), which is a type of quaternary ammonium salt. GTAC, which contains an epoxy functional group that, under high temperatures, generates a ring-opening reaction with wool fibers, which contain the amine group. Then, the AgNPs are attached to the surface of the GTAC-treated wool fibers by treatment with a silver colloidal solution. The process involves the following procedures: (1) The wool fibers are immersed in the GTAC solution, followed by pre-drying at $80^{\circ}C$ and curing at $180^{\circ}C$ to induce an alteration in the chemical structure; and (2) The wool fibers treated with GTAC are immersed in the silver colloid at $40^{\circ}C$ for 120 min to chemically induce a strong attachment of the AgNPs to the wool fibers. Scanning electron microscopy was used to analyze the influence of the concentrations of GTAC and the silver colloid, as well as the influence of the applied temperature of the silver colloid on the wool fibers, and the influence of the morphological changes in the wool fiber surfaces. As a result, the enhanced concentrations of GTAC and the silver colloid together with an elevated applied temperature of silver colloid have a tendency to increase in Ag atomic%.

• Asian-Australasian Journal of Animal Sciences
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• 제22권3호
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• pp.416-420
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• 2009

An experiment of one-year duration was conducted on sixteen adult male German Angora rabbits under sub-temperate Himalayan conditions, to assess the effect of seasons on their body weight, wool production and quality, plane of nutrition and the digestibilities of nutrients. The daily meteorological attribute viz. minimum and maximum temperature; relative humidity and rainfall were recorded during winter (October to March), summer (April to June) and rainy (July to September) seasons. Biological parameters viz. body weight at the time of shearing, wool yield of individual rabbit, quality attributes of wool, fortnightly dry matter intake, chemical composition of feed and fodder and digestibilities of nutrients were recorded. Average minimum and maximum ambient temperature during winter, summer and rainy seasons were 4.6${\pm}$1.9 and 21.4${\pm}$2.8; 13.6${\pm}$2 and 30.3${\pm}$2; and 20.0${\pm}$1.4 and $31.0{\pm}1.8^{\circ}C$, respectively. The average relative humidity and total rainfall during winter, summer and rainy season were 69.5${\pm}$2.9% and 74.7${\pm}$21.8 mm; 58.6${\pm}$2.2% and 38.1${\pm}$18.1 mm; and 69${\pm}$4.2% and 104.0${\pm}$43.7 mm, respectively. The body weight of rabbits increased during all seasons, however, the maximum average daily weight gain of 3.47${\pm}$0.1 g was observed during the rainy season. The wool yield differed significantly (p$\leq$0.05) among different seasons with highest (140.4${\pm}$10 g) and lowest (108.5${\pm}$6.9 g) during winter and summer, respectively. The wool yield during the rainy season was 123.3${\pm}$5.2 g. The wool quality attributes revealed non-significant differences for staple length, fiber diameter, medulation percent, percent pure fibers and percent guard hairs. Plane of nutrition revealed significant (p$\leq$0.05) differences for concentrate intake. The concentrate intake was highest during winter (124.4${\pm}$2.6 g) followed by summer (86.8${\pm}$8.9 g) and rainy (80.7${\pm}$11.8 g) seasons. The reverse trend was observed in roughage intake with significantly (p${\leq}$0.05) lower intake during winter and highest during summer months. As a result total dry matter intake during different seasons was similar. Significant differences (p${\leq}$0.05) were observed for digestibilities of crude protein, crude fiber, ether extract, acid detergent fiber and cellulose. Digestibility of crude protein was highest during winter whereas the digestibilities of crude fiber, ether extract, acid detergent fiber and cellulose remained higher during the rainy season. During the winter season, the dry matter used for producing 100 g of wool was substantially lower than during other seasons and was concluded to be the best season for production of Angora wool under subtemperate Himalayan conditions.

• 한국의류산업학회지
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• 제3권3호
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• pp.277-282
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• 2001

The effect of chitosan on antibacterial activities of cotton, wool and polyester fibers was investigated by shake flask method. Chitosan was treated in 0.1%, 1% and 2% $NaBO_3$ solution to reduce the molecular weight in 4 steps, wadding of cotton, wool and polyester were treated in 0.1%, 0.3% and 0.5% of chitosan solution which were dissolved in 2% acetic acid aqueous solution. The antibacterial activities of the fiber wadding treated and untreated by chitosan against Escherichia coli, Proteus vulgaris and Stephylococcus aureus were measured by shake flask method. On the untreated waddings, cotton showed better antibacterial activities than wool, but on the treated ones, wool showed better than cotton. The antibacterial activity of polyester was better than that of cotton or wool which preserved before and after the chitosan treatment against the three kinds of bacteria. When the chitosan treated cotton waddings was retreated in NaOH aqueous solution, their bacterial activities decreased. After laundering, the antibacterial activities of the treated cotton and wool waddings kept good, but that of the treated polyester reduced by almost half.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2001년도 가을 학술발표회 논문집
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• pp.59-62
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• 2001

Oxydoreductase enzymes such as laccases (benzenediol： oxygen oxidoreductase, EC 1.10.3.2) and horseradish peroxidase (donor： hydrogen peroxide oxidoreductase, HRP, EC 1.11.1.7) can provide novel ways for wool coloration in the face of actual state of the art of these enzymes. HRP has been reported as a very useful enzyme for the synthesis of phenolic polymers2). (omitted)

• 한국염색가공학회지
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• 제13권4호
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• pp.241-248
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• 2001

Natural indigo dyeing has been used mainly on cellulosic fibers and silk during the course of history in Korea. In order to extend the usage of this one of the most important natural dyes, its dyeability on wool fabrics has been studied to find out the optimum dyeing condition for wool fiber which is susceptible to alkaline medium. The dyeing method used was hydrosulphite vat of extracted dye. K/S values of dyed fabrics were investigated to analyze the dyeability of natural indigo on wool fibers and colors were measured through $L^*,\;a^*,\;b^*$ and Munsell Values. Highest K/S values were obtained at the temperature of 60(C and pH 7 to 8. The Munsell Values for hue of wool fabrics dyed with extracted indigo powder using hydrosulphite vat fell mostly in PB range. As the dyebath pH increased, blueness increased. Different dyeing conditions resulted in change of colors of dyed fabrics due to the difference in amounts of indigotin and indirubin contents within the dyed fiber as shown by HPLC.

• 접착 및 계면
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• 제9권2호
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• pp.16-23
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• 2008

본 연구에서는 산업현장에서 직물 제직 시 스크랩으로 버려지는 폐양모와 범용 열가소성수지인 폴리프로필렌(PP)으로 구성된 새로운 폐양모/PP NFRPs (Natural Fiber Reinforced Polymer Composites: 천연섬유강화 고분자복합재료)를 압축성형 방법으로 제조한 후 그들의 기계적, 열적 특성을 분석하였다. PP수지의 기계적 특성은 폐양모의 도입으로 두드러지게 향상되었다. 특히 폐양모의 함량을 50 vol%로 하여 NFRP를 제조하였을 때, PP 대비 NFRP의 굴곡강도는 약 20%, 굴곡탄성률은 약 143%까지 향상되었으며, 인장강도는 약 76%, 인장탄성률은 약 90% 크게 향상되었다. 그리고 열변형온도(HDT)는 최고 $138^{\circ}C$로 PP 대비 약 $21^{\circ}C$가 증가되는 결과를 보여주었다. 연구결과는 열가소성 매트릭스 수지의 보강소재로서 폐양모의 적용 가능성을 제시하였다.

• 자원리싸이클링
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• 제30권4호
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• pp.35-45
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• 2021

본 연구에서는 폐닥나무 섬유를 사용한 목모보드의 제조 및 조습 특성 분석을 수행하였다. 목모보드 제조를 위해 폐닥나무 섬유의 분쇄 시간을 30, 60, 120, 180초로 제어하였으며, 혼합량을 시멘트 대비 0, 3, 6, 9% 수준으로 외할 첨가하여 제어하였다. 분쇄시간 제어 조습섬유 혼입 목모보드의 흡·방습 특성 분석 결과, 60초 분쇄 섬유 혼합 목모보드가 흡·방습 성능이 뛰어난 것으로 확인되었으며, 이는 분쇄 섬유의 손상이 적어 소재 자체의 흡·방습 성능이 보드 혼합 시에도 발현되었기 때문이다. 또한 섬유 혼합량 제어 목모보드의 흡·방습 특성 분석 결과, 6% 혼합 목모보드가 흡·방습 특성이 가장 뛰어났으며, 흡습 및 방습량은 각각 291.00g/m² 및 108.75g/m²으로 확인되었다.

• 패션비즈니스
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• 제10권5호
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• pp.45-57
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• 2006

In the previous study, african marigold petals extract was valued as an excellent natural yellow dye because of its distinguished reactivity with various mordants and color fastness. In this study, we were studied on effect of absorbed metal ion by after-treatment of mordants on the color and fastness in human hair and wool fiber dyed with african marigold petals extract because the proteinic and cellulosic fiber were very well dyed. The dyed human hair showed better dyeing ability in the color fastness than wool fiber on tests of light, wash and perspiration. The absorbed metal ion concentration of mordanted human hairs were 1 or 5 times higher than wool fibers. However, excess of absorbed metal ion haven't consistent effect on K/S and surface color. Human hairs dyed using african marigold extract and mordanted with Al, Sn, Cu and Fe were showed various reddish yellow color groups and good dyeing ability on african marigold extract.

• 한국의류학회지
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• 제29권8호
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• pp.1158-1167
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• 2005

The purpose of this study is to examine the effect of structural properties of plain knit fabrics on the subjective textures and sensibilities of consumers. We investigated the relationship of subjective textures and sensibilities according to fiber contents of wool/rayon and stitch loop length. We made 20 plain knit fabrics, as specimens, with a combination of 5 kinds of fiber contents and 4 kinds of stitch loop length. A factor analysis showed that subjective textures are classified into 3 categories with $R^2=70.32\%$: 'surface-rough', 'drapable', 'bulky' and 'elastic' and subjective sensibilities into 3 categories with $R^2=68.12\%$: 'stable/neat', 'feminine/elegant' and 'natural/comfortable'. The fiber contents of wool/rayon had a positive and linear relation with 'surface-rough', but had a relatively non-linear one with 'bulky' and 'elastic' categories of textures, and 'feminine/elegant' of sensibilities. The stitch loop length had a linear influence on 'drapable' and 'stable/neat', but had a non-linear influence on other subjective textures and sensibilities.