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

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2008, Vol.20, No.6

  • 1.

    The Deodorization and Antibacterial Activities of PLA Films Embedded with TiO2 Nanoparticles

    구광회 | Jinho Jang | 2008, 20(6) | pp.1~7 | number of Cited : 3
    Abstract PDF
    The effects of TiO2 contents and UV irradiation treatment on the surface properties of PLA films embedded with TiO2 nanoparticle were investigated. Whereas UV irradiation decreased reflectance of the treated PLA films proportionally with increasing UV energy, the reflectance of PLA/TiO2 films increased with increasing UV energy. The UV irradiation treatment caused PLA/TiO2 blend films more polar as indicated in the generation of new carbonyl group and decrease in zeta potentials, which was more pronounced with the introduction of TiO2. Upon UV irradiation, TiO2 particles appeared on the film surface as observed in SEM images. The PLA/TiO2 blend films showed photocatalytic properties such as photobleaching of methylene blue, deodorization of ammonia and antimicrobial activity in comparison with pure PLA films.
  • 2.

    Interfacial Electric Property of PVA/PVAc Particles

    이하나 | Lee,Won-Chul | Jaewoong Lee and 2other persons | 2008, 20(6) | pp.8~17 | number of Cited : 0
    Abstract PDF
    Poly (vinyl acetate) (PVAc) was used as a precursor of PVA/PVAc (skin/core) bicomponent. In order to investigate the possibility of PVA particles for electrical applications, PVA/PVAc particles were produced with an emulsifier, SDS (Sodium Dodecyl Sulfate) and an initiator, V-50 (2,2'-azobis(2-amidinopropane)digydrochloride). In this study, we investigated the electrical property of PVA/PVAc (skin/core) particles. The hydroxyl group of the PVA/PVAc (skin./core) was confirmed by the analysis of PVAc and PVA/PVAc (skin/core) using Fourier Transform Infrared Spectroscopy (FT-IR). The zeta-potential of the PVA/PVAc (skin/core) and PVAc has similarity; however, charge control agent (CCA) treated PVA/PVAc (skin/core) particles has lower zeta-potential than untreated PVA/PVAc particles. The zeta-potential (negative values) of the PVA/PVAc (skin/core) were enhanced in proportion to the increased concentration of CCA.
  • 3.

    Manufacturing and Antibacterial Characteristics of Functional Non-woven Fabrics Including Nano-silver Particles

    노덕길 | Young-Ki Hong | Eunhee Park | 2008, 20(6) | pp.18~25 | number of Cited : 0
    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 were manufactured by meltblown and finishing processes. These functional non-woven fabrics were based on 5wt% masterbatch using 2,000ppm nano-silver resin composite. Silver is one of the most universal antimicrobial substances. Nano-technology enables us to expand the surface area of silver particles markedly. Silver nano particles were successfully produced less than 50nm in size. The functional non-woven fabrics including nano-silver particles showed excellent antibacterial activities against Staphylococcus aureus (ATCC 6538) and Klebsieila pneumoniae (ATCC 4352). From the results, functional non-woven fabrics including silver nano particels probably will be available as a good and safe antibiotic alternative, such as mask medium filter, water purifier filter, hygiene wet tissues, marine products pad and so forth.
  • 4.

    Water and Oil Repellency of Wool Fabric Treated with Nano-type Finishing Agent

    Boryun Choi | Samsook Han | 이문철 | 2008, 20(6) | pp.26~34 | number of Cited : 2
    Abstract PDF
    Wool fabric having high moisture content were treated with fluorocarbon-based water and oil repellent finishing agents by pad-dry-cure system. Three types of finishing agents which were regular-type or nano-type were adapted to compare the surface chemical composition, water and oil repellent property, crease recovery angle, and durability to repeated laundering. From the surface chemical compositions resulted by ESCA and C1s curve-fitting, it was shown that the regular-type finishing agent were easily taken off from the finished wool fabrics after repeated laundering. On the other hand, the fluoroalkyl groups of nano-type finishing agents turned round from fabric surface to fiber internal after repeated laundering. The water repellency of the wool fabrics treated with regular-type agent had a little changes according to the treatment condition changes and sharply decreased with repeated laundering. However, these values when treated with nano-type agents increased with the concentration and cure temperature and were maintained after 20 times laundering. The wool fabrics treated with nano-type agent had a great oil repellency irrespective of treatment conditions. Furthermore, the wrinkle recovery values of the wool fabrics treated with nano-type agents were higher than those of the fabrics treated with regular-type agent and were unchanged after 20 times laundering.
  • 5.

    The Dyeability of Silk Fabrics with Annatto

    한미란 | 조원주 | 이정숙 | 2008, 20(6) | pp.35~41 | number of Cited : 7
    Abstract PDF
    This study investigated the dyeing properties of silk fabrics with Annatto. The dye stuff was extracted by distilled water at 60℃, 10minutes, 1:100 of bath ratio. Dyeability(K/S) and color fastness of silk fabrics were tested under conditions of various concentrations, time, temperature, repeat-numbers of dyeing, pH, mordants variables and methods of mordanting. The highest absorbance was found in methanol extract of Annatto. The optimum dyeing concentration, time and temperature of silk fabrics with Annatto were 25%(o.w.f.), 60min and 60℃ respectively. The K/S value showed higher in post-mordanting than in pre-mordanting, and especially post-Fe mordant showed highest K/S value. In the case of colorfastness, Cu-mordanted fabrics were good washing fastness. Dry cleaning fastness appeared 4-5 grades and light fastness showed lowest grade.
  • 6.

    Hair-dyeing by using Pomegranate Hull Extract

    조아랑 | Younsook Shin | Dong Il Yoo | 2008, 20(6) | pp.42~50 | number of Cited : 4
    Abstract PDF
    The objective of this study is to investigate the efficacy of pomegranate hull colorant as a natural hair coloring dye. The extract of pomegranate hull was concentrated and freeze-dried to get colorant powder. Effect of dyeing condition and mordanting on the dye uptake of hair by using Al, Fe, Cu, Cr, Sn compounds, color change and colorfastness were explored. In addition, tensile strength was measured and the surface of the hair was observed. Dye uptake of hair measured by K/S value (400 nm) indicated that ionic bonding seems to be involved in the sorption of pomegranate colorant to hair. Maximum sorption was obtained at pH 3.5 and the concentration of 50% (on the weight of hair, o.w.h.). Acidic dyeing condition (pH 3.5~5.0) showed yellow color however alkaline dyeing condition (pH 7~11) gave reddish yellow color. Pomegranate hull colorant produced greyish brown color on hair and the hair mordanted with Fe showed dark brown color. Mordants except Fe did not increase dye uptake significantly. Mordants except Cu increased light fastness and mordants except Cr increased washing fastness level slightly. According to SEM observation and the tensile strength retention measurement, the mordant dyed hair gave more damage to hair by ultraviolet light and washing than the hair dyed without mordanting. Experimental results of K/S value and colorfastness(light and washing) supported that pomegranate hull colorant without mordanting can be used as a semi-permanent natural hair coloring dye.
  • 7.

    Effect of Tannin Mordanting on Gromwell-dyed Silk Fabric

    Ah Young Park | SONG WHA SOON | 김인영 | 2008, 20(6) | pp.51~62 | number of Cited : 5
    Abstract PDF
    The purpose of this study was to check color change depending on dyeing conditions when silk fabrics was dyed with gromwell and to investigate mordant effect when synthetic tannin was used as a mordant. First, when silk fabrics were dyed with gromwell, the change of color, brightness and chroma were examined by measuring K/S value, a, b value, L value and C value depending on dyeing condition. Second, color, brightness and chroma differences which appeared after mordanting with synthetic tannin were investigated and muti-functional mordanting effect was confirmed with dyeing fastness, antibiosis. As a result of color analysis of gromwell, it was proved that the main pigment of gromwell was shikonin. Color was red purple at pH 3 when silk fabrics were dyed with gromwell. But It became greenish and bluish as temperature rose and time passed by. And it grew reddish and yellowish as concentration level reached higher. The color became purple at pH 5 and purple blue at pH 7. Both at pH 5 and pH 7, it became greenish and yellowish, as temperature went up and time ran by. And it became reddish with concentration increasing. Brightness and chroma decreased with temperature and concentration increasing as well as time passing by. After mordanting with synthetic tannin, the color became less reddish at pH 3 and reddish-yellowish at pH 5 and pH 7. The brightness increased and the chroma decreased. At all pH, the color, the brightness and the chroma became similarly by synthetic tannin mordanting. Dyeing fastness of synthetic tannin mordanted fabric was higher than that of non-mordanted fabric. Especially, wet fastness at pH 3 improved from 1 grade before synthetic tannin mordanting to 3~4 grade after tannin mordanting. Antibiosis was improved by gromwell dyeing and synthetic tannin mordanting.
  • 8.

    Effects of the Air-Jet Loom Characteristics on the Hand Properties of the Sensitive Mixture Fabrics

    Seung-Jin Kim | 2008, 20(6) | pp.63~68 | number of Cited : 1
    Abstract PDF
    The hand of the sensitive mixture fabrics was analysed and discussed with measured mechanical properties of two kinds of woven fabrics according to the characteristics of air-jet loom. The 16 mechanical properties such as tensile, bending, shear, compression and surface were measured using KES-FB system and their differences of the mechanical properties between domestic and foreign looms were analysed with the deviation according to the position of the specimen. And also these mechanical properties according to the domestic and Japan air-jet looms were analysed and discussed with warp and weft insertion tensions during weaving. This research is aiming to make a data base of fabric mechanical properties and, these analysed data are given to weaver as a basic research data related to the effects of loom characteristics to the sensitive mixture fabrics required from weaving fields.
  • 9.

    A Product-Focused Process Design System(PFPDS) for High Comforts Artificial Leather Fabrics

    김주용 | 박백성 | 이채정 | 2008, 20(6) | pp.69~74 | number of Cited : 0
    Abstract PDF
    In this paper, a comfort evaluation system based on a product-focused process design (PFPD) has been proposed for high comforts interior seat covers. Correlations between comforts properties and physical/thermal properties of interior seat covers were examined by combining traditional regression analysis and data mining techniques. A skin sensorial comfort of leather samples was evaluated by only human tactile sensation. The adjectives of leather car seat covers are ‘Soft’, ‘Sticky’ and ‘Elastic’. Thermo-physiological comfort properties of leather samples were evaluated by only human tactile sensation. The adjectives of leather car seat covers are ‘Coolness to the touch’ and ‘Thermal and humid’. Skin sensorial comforts of cloth samples were evaluated by only human tactile sensation. The adjectives of cloth car seat covers are ‘Soft’, ‘Smooth’, ‘Voluminous’ and ‘Elastic’. Thermo-physiological comforts of cloth samples were evaluated by only human tactile sensation. The adjectives of cloth car seat covers are ‘Coolness to the touch’ and ‘Thermal and humid’.
  • 10.

    Modification of Nonwoven Poly(vinyl alcohol) Fabrics (I) - Reaction of Water Soluble Poly(vinyl alcohol) Nonwoven Fabrics with Phosphoryl Chloride -

    이원철 | Chang-Sup Kim | Jang,Sang-Hee and 3other persons | 2008, 20(6) | pp.75~81 | number of Cited : 0
    Abstract PDF
    This paper dealt with the synthesis and characterization of the polymeric product by the reaction of the water-soluble poly(vinyl alcohol)[PVA] nonwoven fabrics and the phosphoryl chloride (POCl3), which has been applied to prepare water-proofing materials or intermediates for increasing water-proofing or fire-proofing ability of commercially available water-soluble PVA support layer. POCl3 was reacted with PVA nonwoven fabrics under non-aqueous condition, and their reactivity, and chemical structure were checked and discussed. PVA was reacted with POCl3 under the reaction condition of 1:1, or 1:2 mole ratios at 70, 80 and 90℃, and the reaction products were further hydrolyzed. The structure of the resulting products from water soluble PVA nonwoven fabrics reacted with POCl3 were identified by FT-IR or X-ray fluorescence spectrophotometer, and they indicated the PVA polymer chains to have phosphorous and chlorine moieties.
  • 11.

    Fabrication of active cooling e-Textiles

    Seung-A Lee | 이창환 | 김기태 and 1other persons | 2008, 20(6) | pp.82~86 | number of Cited : 1
    Abstract PDF
    Cooling function is definitely one of the most desirable attribute of clothing. In spite of the recent progress on phase changing material(PCM) research, the final products with sufficient amount of cooling capability have not yet to be developed in market. A new concept of cooling fabrics has been proposed by applying "Peltier effect" to textile materials. It occurs whenever electrical current flows through two dissimilar conductors; depending on the direction of current flow, the junction of the two conductors is absorbed or released heat. This effect has been tested on P-type and N-type conducting polymers. A P-type conductive polypyrrole coated fabric was synthesized by in-situ polymerization on plain weave PET to make conductive fabrics. And an N-type electrically conductive material was synthesized by treatment of MWNT and polyethyleneimine(PEI). A noticeable amount of temperature difference has been found on the fabrics.
  • 12.

    Effect of Washing and Subsequent Heat Treatment on Water Repellency and Mechanical Properties of Nylon 6, Triacetate and Silk Fabrics Treated with Hydrocarbon Resins

    Hyeiran Park | Kenji Nishi | Tomiji Wakida and 1other persons | 2008, 20(6) | pp.87~91 | number of Cited : 0
    Abstract PDF
    It is commonly known that water repellency of the fabric treated with fluorocarbon resin brings about a decrease by the washing and recovers by the subsequent heat treatment. In this article, effect of the water repellency was investigated on the nylon 6, triacetate and silk fabrics treated with hydrocarbon and silicon resins. Hydrocarbon and silicon resins have been widely used in the textile finishing as the softening and water proofing agents. The fabrics were treated with hydrocarbon resins, Paragium JQ and RC (Ohara Paragium Chemical Co.) and a silicon resin, Poron MR (Shinetsu Chemical Co.), and then washed and subsequently heat treated. Although the water repellency increased by the resin treatment, it decreased by the washing apparently and recovered a little by the heat treatment. The effect of the heat treatment was small comparing with that of the fluorocarbon resin. Furthermore, as a mechanical property of the treated fabric, KES shearing and bending hysteresis parameters, modulus and hysteresis width of the hydrocarbon resin-treated nylon 6, triacetate and silk fabrics decreased by the heat treatment after washing. Therefore, the treatment is effective at improving the softening of the fabric in water repellent finish.