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pISSN : 1229-0033 / eISSN : 2234-036X

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2006, Vol.18, No.6

  • 1.

    The Dyeability and Antibacterial Activity of Silk, Rayon Fabrics dyed with Cochineal

    Bae Jung Sook | 김윤경 | Manwoo Huh | 2006, 18(6) | pp.1~9 | number of Cited : 8
    Abstract PDF
    The purpose of this study is to investigate the dyeability, antibacterial activity on silk and rayon fabrics dyed with cochineal.The result are as follows;1. The K/S value of silk fabric was higher than that of rayon fabric.2. The optimum conditions are mordant concentration 0.5~1%, dyeing material concentration 2.0%(o.w.f), dyeing temperature 60℃, PH 3 and dyeing time 30 minutes.3. Pre-mordanting method had higher dyeing absorption than post mordanting method in case of silk and rayon fabrics.4. The antibacterial activity of dyed silk fabrics were higher than that of dyed rayon fabrics and the antibacterial activity was increased by mordanting.5. The lightfastness and perspiration fastness of silk fabric were improved but these of rayon were not. Dyeing fastness was improved by Fe mordanting on both fabrics.
  • 2.

    Dyeing and Mechanical Properties of 0.01d Polyester Ultramicro Fiber

    박재민 | Dong Seok Jeong | 노환권 and 2other persons | 2006, 18(6) | pp.10~15 | number of Cited : 5
    Abstract PDF
    In this article, effect of the dyeing and mechanical properties were investigated on the polyester ultramicro fiber(UMF) and knitted fabric varying fiber fineness(0.01d and 0.05d). By a treatment with NaOH solution, sea-ingredient was removed and polyester micro-fiber was revealed. The dyeing, build-up and fastness properties of the fiber and fabrics were observed. We used C.I. Disperse Red 60 and Blue 56 for dyeing property and eight Lumacron dyes for build-up property and colorfastness. At low temperature dyeing(100℃), the dyeing rate of 0.01d-polyester UMF increased more than that of 0.05d-polyester UMF with Disperse Red 60 and Blue 56 whereas dyeing rate of 0.05d-polyester UMF were increased more than that of 0.01d-polyester UMF at high temperature(120℃), The colorfastnesses of the 0.05d-fiber knitted fabric such as washing, rubbing and light was higher than those of the 0.01d-fiber knitted fabric.
  • 3.

    The mechanical and Antimicrobial Properties of Chitosan Crosslinked Rayon Fabric - Effect of chitosan and epichlorohydrin(ECH) concentration -

    안정미 | Min Ji Kim | Lee Shin hee | 2006, 18(6) | pp.16~24 | number of Cited : 3
    Abstract PDF
    The purpose of this study is to improve the defects of chitosan crosslinked viscose rayon by ECH and to describe the change of hand of chitosan crosslinked viscose rayon fabrics. The chitosan crosslinked viscose rayon were manufactured by crosslinking process using ECH as crosslinking agent, 2 wt% aqueous acetic acid as a solvent of chitosan and ECH, and 20 wt% aqueous sodium hydroxide as crosslinking catalyst. Viscose rayon were first immersed in the pad bath of the mixed solution of chitosan and ECH, padded up to 100 wt% wet pick-up on weight of fiber(owf), precured on pin frames at 130℃ for 2 minutes, immersed in NaOH solution and finally wash and dry. Antimicrobial properties of the viscose rayon treated with chitosan were measured by the shake flask C.T.M. 0923 test method with staphylococcus aureus(ATCC 6538) as the microorganism.When the concentration of chitosan was increased chitosan crosslinked viscose rayon's LT, WT, B, 2HB and MIU were increased and G, 2HG, SMD, T and Tm were decreased. On the other hand, WT, EM were decreased and RT was increased at 1×10-2M ECH. The optimum condition for crosslinking was that ECH concentration was between 1×10-2M and 5×10-2M. Antimicrobial effects of rayon fabric treated with chitosan was excellent.
  • 4.

    A Study on the Silk Degumming(2) - Pad-steam Degumming -

    김문식 | 2006, 18(6) | pp.25~30 | number of Cited : 1
    Abstract PDF
    Degumming is an essential process to improve the luster and smoothness of the silk filament. Silk varieties were degummed using different methods. A number of methods, from pad-steam to specific alkaline are being used for this propose. In this paper an attempt to compare the efficiencies of different degumming processes has been made. From the results, it may be observed that when silk fabrics were pad-steam, the degree of degumming, as assessed by weight loss. When the pad-steam degumming was carried out at different pHs, adjusted using alkalies, it was observed that at higher pH the weight loss is high. Pad-steam degumming as well as star degumming was found to be superior with minimum damage to the substrate. Among the alkalis used, the sodium carbonate gives the best results, since the weight loss is almost maximum with lower strength loss by over degumming. It is also efficient from the point of view of conservation of heat energy and time as against the comparable star degumming.
  • 5.

    Preparation and Characteristics of Anionic Surfactant Using Waste Fleshing Scrap

    신수범 | 민병욱 | 양승훈 and 3other persons | 2006, 18(6) | pp.31~36 | number of Cited : 0
    Abstract PDF
    Study has been made for producing anionic surfactant using waste fleshing scraps from the leather making process through refining, esterification, sulfonation and blending processes. As a most optimum lard oil refining method, refining was carried out for 4 hours under temperature of 120oC and approximately 200 mbar vacuum, which gave a recovery of more than 80% lard oil. Refined lard oil obtained thus was undergone methlyl-esterification, then sulfonated to make a degreasing agent. By methyl-esterification using lard oil, more than 85% of fatty acid and 12~13% of glycerine were extracted from the oil. Sulfonation of the extracted fatty acid ester lard oil has shown most optimum at 15~20% chlorosulfonic acid content, and the content of bonding sulfate at this time was higher than 3.5%. Finally the followed anionic surfactant having degreasing force of 80% and higher could be made by blending process.
  • 6.

    Photo-Degradation Behavior of Silk Fabrics

    이학정 | Kwon Young-Suk | Jeong Dae Jang and 2other persons | 2006, 18(6) | pp.37~42 | number of Cited : 1
    Abstract PDF
    Researches to preserve and restore the remaining fabrics as costume heritages have been carried out. In this study, in order to artificially restore an excavated silk fabrics, degummed silk fabrics and safflower dyed silk fabrics were prepared for an experiment. These fabrics were photo-degraded by the Xenon arc beam to have various strength retention(100%, 80%, 60%, 40%, 20%). The fine structure and physical properties of Xenon arc treated fabrics were investigated with various techniques such as tensile test, weight loss, wide-angle X-ray diffraction, yellowness, color, SEM etc. Tensile strength and the crystal diffraction intensity of silk fabrics decreased as Xenon arc beam treatment time increased. Weight loss increased slightly. Strength retention was decreased as the Xenon arc beam treatment time goes by. (Yellowness of the undyed silk fabrics and L* of the dyed silk fabrics increased. Whiteness of the undyed silk fabrics and b* of the dyed silk fabrics decreased.) SEM results of the silk fabrics treated Xenon arc beam show that surface was a little damaged.
  • 7.

    The Study of Characteristics of Electrolytic Water

    ChanWoo Lee | Kieseo Bae | 2006, 18(6) | pp.43~48 | number of Cited : 3
    Abstract PDF
    Electrolytic water(EW), studied in recent decades in the Japan, Russia and United State of America, have shown promise as a method of disinfection whereby low levels of free chlorine, sodium hypochlorite, or hypochlorous acid may be produced in situ in Nacl-containing solution. These methods have shown promise in destruction of microorganisms in medical, dental environment, and in the agriculture and food industry.A recently EW treatment system was evaluated for reducing scouring agent and other surfactants in the washing and scouring process of textile industry. Unfortunately, there is, to my knowledge, no serious studies of the properties of EW for textile industry. In order to study the characteristics of EW and confirm the possibility of applications in textile industry processes, the pH, surface activity, penetration force, surface tension, and contact angle of EW was measured under various conditions. In general terms, What all this shows is that there is fundamental difference between the properties of EW and that of distilled water.
  • 8.

    Optical Properties of PVA Polarizing Films Surface-modified by UV Irradiation

    구광회 | Jinho Jang | 2006, 18(6) | pp.49~56 | number of Cited : 1
    Abstract PDF
    Surface treatment using UV irradiation was carried out to improve optical properties of polarizing films. The effects of UV energy of the UV-treated PVA films were investigated by measuring reflectance, surface roughness, contact angles, ESCA, and ATR. Reflectance decreased at wavelength of 450 nm or less and surface roughness increased with increasing UV energy. Water contact angle increased in the irradiated PVA films and surface energy decreased with increase in UV energy. ATR analysis showed that the OH groups were broken and some new groups were introduced such as C=C and C=O bonds together with increased O1s/C1s, resulting in the observed surface modification effect. Surface modified PVA polarizing films showed improvement in light transmittance of polarizing films at high wavelength region without deteriorating polarization efficiency, which was not affected by UV irradiation sequence during manufacturing processes such as coloring and drawing.
  • 9.

    Effects of Prevention on the Cow Mastitis Based on Functional Non-woven Finishing Products

    홍영기 | 이문수 | 2006, 18(6) | pp.57~62 | number of Cited : 1
    Abstract PDF
    The functional non-woven fabrics have been applied in various industry fields, such as clothing, hygiene, environment, medical and so forth. The functional non-woven fabrics for wet tissue were manufactured by meltblown and wet tissue finishing processes. The wet tissue was contained the various composition substances such as Benzalkonium Chloride(0.2292g), Iodo-2-propynyl Butyl carbamate(0.0069g) and 5-Chloro-2-Methyl-Isothiazolin-3-one, 2-Methyl- Isothiazolin-3-one(0.0034g) with purified water(999.76g).In this study, the functional wet tissue based on meltblown nonwovens has been applied in dairy cattle for prevention on cow mastitis. Mastitis is the most costly disease results in lost milk production, decreased milk quality, milk discard, early culling of cows, drug costs and labor costs in dairy cattle. Therefore, this study was investigated to evaluate clinical effect of the functional wet tissue in mastitis control. The results, after experiment the functional wet tissue used group, demonstrated that the infection rate, cure rate and mean somatic cell count(SCC) were significantly decreased as compared to the control group.
  • 10.

    Dyeing Properties of Nylon/Spandex Blends with Vat Dye

    박영민 | KIM BYUNG-SOON | Young-A Son | 2006, 18(6) | pp.63~68 | number of Cited : 0
    Abstract PDF
    In synthetic/spandex blends fibers, contents of the synthetic fiber by percentage is higher than those of spandex. Thus, the dyeing process of the blends fiber is mainly focused on the synthetic fiber, but not the spandex. In this study, we used several series of vat dyes for dyeing the nylon/spandex blend fabrics and their dyeing properties(fk value) were investigated at various reduction agents, temperatures, pH which have the potential for deep shade dyeing effects. The formamidinesulfinic acid were found to be effective to increase the fk values of the blend fiber compared to sodium hydrosulfite and Rongalit C. Higher temperature(100℃) and lower pH(pH 4) were observed as suitable conditions for maximum fk values.
  • 11.

    Washing Efficiency of Steam Jet Washing Process

    Seo,Moon Hwo | 이아진 | Jeong Su-hyeon and 3other persons | 2006, 18(6) | pp.69~79 | number of Cited : 0
    Abstract PDF
    The washing characteristics of steam jet heating process have been compared with other washing processes, such as low temperature process(standard process, below 40℃) and high temperature process(boiling process, up to 95℃) with the standard soil fabric, EPMA 105. Steam jet heating process showed almost the same washing efficiency as high maximum temperature process for pig's blood and wine. This result can be explained with the higher surface temperature of washing materials in steam jet process compared with direct boiling process. In terms of the energy and water consumption, the steam jet washing process showed significant savings compared with direct boiling type washing process.
  • 12.

    Ultraviolet Protection Property of Green Tea Extract Dyed Fabrics

    김신희 | 2006, 18(6) | pp.80~87 | number of Cited : 4
    Abstract PDF
    Nowadays, interests of ultraviolet(UV) protection increased, since the UV dosage on the earth surface has increased over years. Overdose of UV can cause various skin, eye, and even DNA damages. Therefore, it is need to develop a proper mean to protect human skin and eye from UV radiation. In this study, the UV protective effect of green tea extract dyed fabrics with various fiber types were examined. Green tea has an active moiety called "catechin" having benzene rings in its structure, which would exert a proper UV protective property. Green tea dyed fabrics showed the increase in UV protection, and silk showed the highest increase in UV protection (from 52.2% to 84.5% in UV-A, from 66.1% to 90% in UV-B). The order of UV-A protection increase is silk, wool, nylon and acrylic, PET, and cotton. The order of UV-B protection increase is silk nylon, wool, acrylic, cotton, and PET. In case of silk and nylon, the UV protection property gradually increased as the concentration of green tea extract increased. As a result, it was proven that green tea extract dyeing can improve UV protection property of dyed fabrics in environment-friendly and biocompatible manners.