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

2020 KCI Impact Factor : 0.36
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2018, Vol.30, No.4

  • 1.

    Mechanical and Thermal Properties of Industrial Protective Fabric with Recycled m-Aramid and Natural Fiber

    Eun Ji Sung | Young Mee Baek | AN,SEUNG-KOOK | 2018, 30(4) | pp.227~236 | number of Cited : 0
    Abstract PDF
    As consciousness of safety becomes an important social issue, the demand for protective clothing is increasing. Conventional flame-retardant cotton working wear has low durability, and working wear with m-aramid fibers are stiff, heavy, less permeable, and expensive. In this study, recycled m-aramid and cotton have been blended to produce woven fabric of different compositions to enhance high performance and comfort to solve aforementioned problems. The fabrics were analyzed according to constituents and various structural factors. Mechanical properties were measured using KES-FB system. The measured thermal properties are TGA, Qmax, TPP and RPP. Fabric with polyurethane yarn covered by m-aramid/cotton spun yarn is observed to have good wearability. The fabric of open end spun yarn showed more stiffness than that of ring spun yarn. The sample with the high count of yarn has more smooth surface. In addition, high m-aramid content fabric is considered to have relatively high stiffness when using as clothing. In TGA the fabric with higher m-aramid content showed more stable decomposition behavior. The fabric having rough surface showed lower heat transfer properties in Qmax. The influence of the fabric thickness was important in convection and radiant heat test.
  • 2.

    Dyeing of High Strength and High Molecular Weight Polyethylene Fiber Using Super Hydrophobic Red Fluorescence Dyes

    Taegun Kim | Junheon Lee | Jihoon Park and 1other persons | 2018, 30(4) | pp.237~244 | number of Cited : 2
    Abstract PDF
    Three super hydrophobic red fluorescence dyes were selected to dye high molecular weight polyethylene fiber. Their absorbance and emission spectra were obtained and Stokes' shift was measured. Fluorescence emission strength of the dyes on the fiber was investigated and therefore Fluoro Red 3 was determined as the best one among those three dyes in this experiment. Dyeing properties and fluorescence intensities were investigated using the Fluoro Red 3 on high molecular weight polyethylene fiber at various dyeing conditions. The optimum concentration of a dispersing agent was appeared at 10 wt% in aqueous solution. The best dyeing was obtained at 125℃ for 1 hour. The color fastnesses to the washing and rubbing were as high as ratings 4~5, however, the fastness to light was exhibited ratings 2~3.
  • 3.

    Surface Characteristics, Antimicrobial and Photodegradation Effect of Cotton Fibers Coated with TiO2 Nanoparticles and 3-Mercaptopropyltrimethoxysilane(3-MPTMS)

    Sujin Park | Jaewoong Lee | Samsoo Kim and 1other persons | 2018, 30(4) | pp.245~255 | number of Cited : 1
    Abstract PDF
    In this study, cotton fabrics were coated with TiO2 nanoparticles using 3-mercaptopropyltrimethoxysilane( 3-MPTMS), which is highly reactive to cotton fabrics, as a medium, and the characteristics, antimicrobial properties, and photodegradation properties of the fibers were measured. The manufacturing process is as follows. (1) 3-MPTMS was added to isopropanol, and TiO2 colloid was added to the mixture to prepare a solution. (2) Cellulose fibers were immersed in the prepared 3-MPTMS/TiO2 solution, stirred for 90 minutes at 45℃ in a constant temperature water bath, and dried thereafter. In order to identify the morphology of the cellulose fibers coated with TiO2 nanoparticles, the surface was observed with a scanning electron microscope(SEM), and SEM-EDS was measured to identify the adhesion of TiO2 nanoparticles. The SEM images showed TiO2 nanoparticle and 3-MPTMS coated layers on the fibers and it was identified that TiO2 nanoparticles were attached to the cellulose fibers. The antimicrobial activity of 3-MPTMS/TiO2-treated cotton fabrics was measured using a bacterial reduction method. 3-MPTMS/TiO2 cellulose fibers which was irradiated by ultra violet light, showed antimicrobial activity against Escherichia coli(ATCC 43895) and Staphylococcus aureus(ATCCBAA-1707) unlike unirradiated fibers. The cellulose fibers were stained with methylene blue and the photodegradation performance of the stained fabrics was analyzed. The stained fabrics showed high degradation performance with photolytic reactions of TiO2 nanoparticles.
  • 4.

    Color Strength and Fastness of Pigment Ink with Various Binder Monomer Compositions

    Woong Kwon | Minkyu Lee | Jeong Eui gyung and 1other persons | 2018, 30(4) | pp.256~263 | number of Cited : 3
    Abstract PDF
    The binder polymers for digital textile printing(DTP) pigment inks were prepared using miniemulsion polymerization with various monomer compositions to study effects of monomer compositions on particle size distribution, average molecular weight, Tg, and color strength and rubbing fastness of the dyed fabrics with the prepared binder based pigment ink. The monomers used were MMA(Methyl methacrylate), BA(Butyl acrylate), MAA(Methacrylic acid), NMA(N-methylol acrylamide), NEA(N-ethylol acrylamide) and the ratios of the monomers were changed. The particle size was the smallest with 136nm when the MMA to BA weight ratio was 4:16 and the largest with 290nm when the MMA, BA, MAA, NEA ratio was 2.5:17:0.25:0.25. However, the glass transition temperature was lowest with -41.90℃ and the color strength and rubbing fastness of the resulting sample were the best when the MMA, BA, MAA, NEA ratio was used. This suggested that the introduction of the NEA monomer to the binder polymer for the pigment ink could be an efficient way to enhance the rubbing fastness of the DTP pigment inks present.
  • 5.

    Immobilization of Lysozyme from Hen Egg by Crosslinking Method onto Chitosan Non-woven

    Lee, So Hee | 2018, 30(4) | pp.264~274 | number of Cited : 1
    Abstract PDF
    Immobilization of lysozyme on chitosan non-woven using glutaraldehyde(GA) was investigated. For this, 100 % chitosan non-woven was prepared as novel support for the enzyme immobilization. In addition, free lysozyme activity was examined depending on various pH and temperature by measuring time. Moreover, the optimum immobilization conditions depending on various pH, temperature, immobilization time and lysozyme concentration was evaluated. In addition, thermal stability and storage stability of immobilized lysozyme were measured. The characteristics of immobilized lysozyme was examined by FT-IR, surface morphology, and MTT assay. The results are follows: the optimal immobilization of lysozyme were pH 7.0, 25 ℃, lysozyme concentration 1.5 mg/ml, immobilization time 240 min. The immobilized lysozyme showed higher thermal stability than the free trypsin. The immobilized lysozyme activity was retained 80 % of its initial activity at 4 ℃ over 30 days of storage. The lysozyme was immobilized effectively on chitosan non-woven by observation of surface morphology.
  • 6.

    Study on the Improvement of the Fastness of Dyeing for Environmentally Synthetic Suede Using Silica Particles

    Hye Mi Lee | Ah Rong Kim | Dae Geun Kim | 2018, 30(4) | pp.275~287 | number of Cited : 0
    Abstract PDF
    In recent years, research on the development of eco-friendly synthetic suede based on water-dispersed polyurethane resin and non-fluorine water repellent has been conducted. Synthetic suede has a problem that the fastness to dyeing is greatly lowered after the water-repellent processing at a high temperature of 160℃because the polyester is dyed with a disperse dye. Therefore, in this study, silica was added to water-dispersed polyurethane resin to improve dye fastness. To distribute the PUD-SiO2 mixture evenly in the water-dispersed polyurethane resin, sufficient stirring was done for a period of time. When the PUD-SiO2 mixture(PUD 1-5%) is applied to the substrate, it is confirmed through SEM that the mixture is uniformly applied without particle condensation. The results showed that silica with a diameter of 4~12nm and BET of 200~380g/m2 had the ability to improve dispersibility and fastness.
  • 7.

    Preparation and Evaluation of Self-cleaning Fabrics using Photocatalyst and Superhydrophobic Finishing

    Jeong Eui gyung | Heejoo Woo | Seungbin Cho and 1other persons | 2018, 30(4) | pp.288~293 | number of Cited : 0
    Abstract PDF
    This study reported the dual functional self-cleaning PET fabrics prepared from TiO2 and hexadecyltrimethoxysilane treatment, which have photodegradation and superhydrophobicity on the fabric surface. Phodegradation and superhydrophobicity of the resulting fabric were compared with TiO2 or silane treated fabrics. The dual functional self-cleaning PET fabric showed less photodegradation than the TiO2 treated fabric. However, the dual functional self-cleaning fabrics showed superior superhydrophobicity to silane treated fabric with increased water contact angle and significantly decreased rolloff angle. This suggested that the dual functional PET fabric has a great potential to be the commercialized self-cleaning fabric because it is repellent to soil or dust and even if soil or dust is adsorbed on the fabric surface, it can be removed by water rolling off on the surface or photodegradation by the photocatalyst.
  • 8.

    Eco-friendly Leather Dyeing Using Biomass Wastes(Ⅱ) : Improving the Dyeability of Pig Leather to Onion Skin Colorant by Pre-treatment

    Youngmi Yeo | Shin, Younsook | 2018, 30(4) | pp.294~303 | number of Cited : 3
    Abstract PDF
    In this study, eco-friendly natural dyeing for pig leather was explored by using onion skin which is food waste. Sodium caseinate was used as a pre-treatment agent to improve dyeability of pig leather and its effect on dye uptake was investigated according to treatment concentration. Dye uptake of the pre-treated pig leather was increased by about two times compared to untreated one at 0.2% pre-treatment concentration. Onion skin colorant imparted YR color on pig leather. After mordanting, the color of pretreated/ dyed pig leather was varied from brick-red to khaki shades. However, mordanting did not improved dye uptake of the pre-treated/dyed pig leather significantly. The colorfastnesses of un-mordanted samples to light, dry cleaning, rubbing were grades 3-4, 5, and 4, respectively, which is good enough to meet all Korean Standard for Fastness of leather products. After mordanting, the light fastness of pig leather was improved to 4, 4-5 grade. The efficacy of sodium caseinate as a pre-treatment agent for pig leather was verified by improved dye uptake and good colorfastness. And, the natural dyeing of pig leather using food waste would be a significant sustainable way in terms of eco-friendliness and reuse of biomass to reduce environmental pollution.
  • 9.

    Hair Changes with the Use of Mist during Hair Bleaching

    Eun Bi Kim | Im soon yea | 2018, 30(4) | pp.304~312 | number of Cited : 1
    Abstract PDF
    This study reduced the number of hair bleachings and used a hair steamer machine to reduce hair damage during hair coloring. In addition, such treatment was given, focusing on the use of hair mist. When the L*a*b* values for bleached hair were measured using a spectrum colorimeter, the mist steamer-based hair revealed higher brightness. Hair damage was low when moisture contents were high after hair drying with the use of the mist steamer machine. The mist treatment-less hair showed more blurred cuticle boundaries than mist-treated hair. In other words, this confirms that cuticles are protected by the use of a mist steamer machine during hair bleaching. It appears that this could minimize hair loss and meet clients’ aesthetic needs and satisfaction during color bleaching/coloring.
  • 10.

    Study on the Mechanical Properties of Hybridized Carbon Fiber Composite According to Stacking Structure

    Seon Woong Koo | Woo Jin Oh | Jong Sung Won and 3other persons | 2018, 30(4) | pp.313~320 | number of Cited : 0
    Abstract PDF
    As carbon fiber reinforced composites(CFRP) are widely used in aerospace, automobile, marine, and sports goods applications, they have been studied extensively by various researchers. However, CFRP have been pointed out because of machining problems such as delamination and burr phenomenons. Especially, hole machining process, drilling, has non-smooth features on inlet and outlet surfaces of drilled hole. This kind of machining problem can be controlled to some extent by using high modulus pitch- CF, which has considerable effects on fracture behavior of composite compared with only PAN CF composite. Therefore, PAN and pitch hybridized CF composites were prepared having high strength and modulus. The results demonstrate that the hybrid CFRP specimens with pitch CF offer the good potential to enhance modulus as well as strength properties. Dynamic mechanical, flexural, and impact properties were measured and analyzed. Morphological surface of the composites were also observed by IFS-28, canon after hole machining.
  • 11.

    Synthesis and Characterization of Polyurethane for Artificial Leather Using Bio Polyol

    Suk-Hun Sur | Pil-Jun Choi | Jae-Wang Ko and 1other persons | 2018, 30(4) | pp.321~328 | number of Cited : 2
    Abstract PDF
    Wet polyurethane resin was synthesized by using polytrimethylene ether glycol prepared from 1,3-propanediol produced by fermentation from corn sugar as bio polyol and polyether-polyol(PTMG). Physical properties and cell characteristics by wet coagulation were investigated using the synthesized wet polyurethane resin. The tensile strength of wet polyurethane resin decreased with increasing content of bio polyol as copolymer polyol, but it tended to increase elongation at break and tear strength. As a result of thermal characteristic analysis, it was found that the glass transition temperature was slightly increased as the content of bio polyol increased. As a result of comparing the cell characteristics by the wet coagulation method, it was found that the shape of the cell was good when the ether polyol and the bio polyol were used alone.