• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2008.04a
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• pp.77-79
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• 2008

Polynitro fullerenes were synthesized by reaction C-60 in benzen solution with a mixture of NaNO$_2$ and HNO$_3$. Hydrolysis of polynitro fullerenes in aqueous NaOH gave the corresponding polyhydroxylated fullerenes. Sulfonation reaction was carried out in pyridine solution of ClSO$_3$H. Infrared spectra of the resultant fullerene derivatives showed the characteristic IR bands, corresponding to absorptions of O-H, N-O, and SO$_3$Na functions. Electric resistivity and thermal transmittance of wool fiber absorbed with the water-soluble C-60 were investigated. Thermal transmittances of wool fiber were increased with increasing water-soluble C-60 concentrations, but electric conductivity were decreased with raising water-soluble C-60 uptake values.

• Textile Coloration and Finishing
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• v.10 no.2
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• pp.1-7
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• 1998

In this study, PET fabric was hydrolyzed with NaOH using the Tank m/c and Liquor-flow m/c to determine the alkali hydrolysis properties of PET fabrics. The results were as follows ： The weft density and tensile strength of PET fabrics hydrolyzed with Liquor-flow m/c were higher than those hydrolyzed with Tank m/c in case of less than 10％ of weight loss. However, above 10％ of weight loss, reverse phenomenon was showed. K/S value of hydrolyzed PET with Liquor-flow m/c was higher than that with Tank m/c above 10％ of weight loss. It was observed that the micropores of PET surface were collapsed due to physical force(abrasion and collision) during hydrolysis. Bending rigidity of hydrolyzed PET fabric was about 32％ and 40％ of bending rigidity of warp and weft direction of untreated fabric at 7％ of weight loss, respectively. Above 7％ of weight loss, decrease rate was decreased.

• Textile Coloration and Finishing
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• v.9 no.6
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• pp.18-25
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• 1997

The change of crystalline structure and mechanical properties of i-PP films which had before isothermally annealed at various temperature and times have been studied. The following results were abtain The crystallinity and crystallite size of the samples showed increasing above the annealing temperature of 13$0^{\circ}C$ and these are equilibrated after an annealing time of 30min. When the crystalline form was at annealling condition were below 13$0^{\circ}C$, 2min, subsequently achieving an $\alpha$, $\beta$ mixing form and at 13$0^{\circ}C$, 10min, the crystalline form entered an $\alpha$ form transition. It is achieved a typical $\alpha$ form at 15$0^{\circ}C$. The value of T'm was increasing until 13$0^{\circ}C$ but it was not founded at 15$0^{\circ}C$. The slopes which represented crystalline form in an Avrami plot differed from each other within the range of this experiment.

• Textile Coloration and Finishing
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• v.13 no.4
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• pp.272-281
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• 2001

Shrink resist finishing of wool fabric was carried out with MONAMIN BTN shrink resist agent after chlorination with D.C.C.A.(dichloro isocyanuric acid). The purpose of this study is to investigate the effect of treating conditions, such as concentrations of D.C.C.A and MONAMIN BTN, pH of treating bath, dying times, curing times and temperatures, on shrink resist finishing. Mechanical properties of the treated fabric were measured by KES-FB system. The optimum chlorination of wool corresponds to 2∼3%(o.w.f.) of D.C.C.A. without rendering the damage on surface of wool fiber. Also it seems likely that the shirink resist finishing carried out at 2 ∼3%(o.w.f.) of MONAMIN BTN and pH 7∼8 of treating bath is effective in increasing a softness of hand.

• Textile Coloration and Finishing
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• v.33 no.4
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• pp.309-316
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• 2021

Due to the rigid nature of the silicon carbide fiber(SiC), fiber damage occurs from the friction during the carding process. This damage not only lowers the spun yarn yield, but also lowers the heat resistance of the spun yarn, so that ultra-high heat resistant yarn cannot be manufactured. Therefore, in the carding process where the most friction between fiber and machine(wire, etc.) occurs, some factors were modified and tested, and as a result of measuring the change in physical properties, fiber damage decreased due to the wire angle or wire density, resulting in improved yield. The test method used to measure the yield of SiC fiber was the carbonization method, and the content of SiC fibers was calculated using the remaining amount after carbonization. Carbonization test was performed at air condition, 700℃, and for 2 hours. Analysis by SEM-EDX showed that the carbide was consistent with the composition of the SiC fiber.

• Textile Coloration and Finishing
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• v.8 no.5
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• pp.25-48
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• 1996

이 연구의 목적은 에틸렌이민 유도체를 갖는 아조계 분산 염료의 폴리에스테르 섬유에의 응용과 최적화된 폴리에스테르 염색 조건의 확립이다. 이들 아지리디닐 염료는 구조가 유사하며 말단에 하이드록시기를 갖는 염료(아지리디닐 염료의 가수분해 형태)와 비교하여 최대 흡수 파장의 천색적으로 천이 됨을 알 수 있었다. 세가지 아지리디닐 모노 아조 염료와 이들 염료의 가수분해 된 형태 그리고 디메틸아니린계 아조 염료의 폴리에스테르 섬유에 대한 염색 및 견뢰도 성질이 조사되었다. 아지리디닐 아조 염료는 산성 조건에서보다 염기성 조건하에서 보다 안정하였고, 뛰어난 build-up이 높은 pH조건에서 얻어졌으며, 폴리에스테르 염색 시 130$^{\circ}C$, pH 10의 조건에서 최적화된 색상 강도를 얻었다. 아지리디닐 염료는 이 염료의 가수분해 형태와 디메틸아닐린 염료와 비교하여 개선된 세탁 견뢰도를나타내었고 이는 용매 추출을 이용하여 확인 하였다. 아지리디닐 아조 염료는 역시 광 련뢰도에서도 또한 상용화된 분산 염료에 비교하여 높은 결과를 나타내었다.

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

• Clinical and Experimental Reproductive Medicine
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• v.16 no.1
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• pp.41-55
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• 1989

Lymphocyte chromosome preparations obtained by the micromethod (Arakaki and Sparkes, 1963) from 234 our patients (165 females and 69 males) were analysed by C-, NOR-and GC-bandings for chromosome heteromorphisms. The centromeric regions of chromosomes 1,9,16 and the long arm of the Y chromosomes were tested for C heteromorphism. Minor variations found in this study such as inv(9), prominant short arms and large satellites of acrocentrics were also examined by appropriate banding techniques. Of the 234 probands, a total of 125 different C-variants were detected, and the average frequency of the variants per individual was estimated to be 0.53. The observed variations were as follows : 99 qh variants, 5 pericentric inversions of chromosome 9, and 21 satellite and/or short arm variants.

• Textile Coloration and Finishing
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• v.2 no.4
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• pp.237-244
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• 1990

Syntheses and liquid-Crystallinites of thermotropic copoly (ester amide)s were investigated. The three components melt polycondensation of 4,4'-dicarboxy-$\alpha$, $\omega$-diphenoxyalkane as an A component, 4-4'diacetoxybiphenyl as a B, and p-N-acetoxy-aminobenzoic acid as a C gave the thrmotropic copoly(ester amide)s containing a flexible splacer in the polymer backbone. Diacetylated hydroquinone, methyl hydroquinone, chlorohydroquinone, and phenyl hydroquinone were used as anther B components. A polymer(6BPAB) having 10 mol% of C component and hexamethylene space. showed a typical nematic texture between $245^{\circ}C(T_m)\; and\; more\; than\; 360^{\circ]C(T_i)$. The melting points of the members of this series of polymers increased with decreasing methylene spacer. The polymer structure and mesomorphic nature were examined by solid and solution ^{13}C-NMR4 spectroscopy, cross polarizing microscopy with a hot stage, and X-ray diffactometry.

• Textile Coloration and Finishing
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• v.7 no.3
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• pp.31-37
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• 1995

Effects of glycol pretreatment conditions such as concentration and molecular weight of glycols and dye types of different constitutions on the degree of transfer were investigated when transfer printed onto the cotton fabric with disperse dyestuffs. Obtained results are as follows ; 1. Although the degree of transfer increases linearly with temperature a time, above a certain critical point, they show decremental aspects for both of C.I. Disperse Orange 3 and C.I. Diperse Violet 1. 2. Degree of transfer increases with molecular weight of glycols, but PEG 200 which has a moleular weight 200 and boiling point of 300$^{\circ}C$ is more effcient than that of lower molecular weight. 3. Degree of tansfer for the C.I. Disperse Orange 3 having constitution of azo benzene type is somewhat higher than that of C.I. Disperse Violet 1 of amino anthraquinone.