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

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2019, Vol.31, No.4

  • 1.

    Improvement in the Color Fastness of Cotton Fabrics Dyed with Kale-Extracted Colorants

    Yeonjoo Lee | Sukyung Kwak | Jinho Jang | 2019, 31(4) | pp.225~232 | number of Cited : 3
    Abstract PDF
    The colorants of kale powders were optimally extracted using an 1:1 mixture solvent of ethanol and DMSO at 105℃ for 30 minutes obtaining a high yield of 359.7㎍ /mL chlorophylls. Low color fastness of the dyed fabrics with the extracts, particularly against washing and solar radiation, can be overcome by the combined treatments of chitosan, heat setting and tannic acid. Washing fastness to color change was improved from rating 1-2 up to 5 due to the enhanced electrostatic interactions between the colorants and the positive glucosamine unit of the chitosan in the cationized cotton. In addition, the tannic acid treatment contributed to the additional increase in color fastness after the sequential treatments of chitosan pretreatment, dyeing and heat setting.
  • 2.

    Eco-friendly Textile Printing using Marigold Pigment(1): Effect of Binder Type and Mixing Ratio

    Youngmi Yeo | Younsook Shin | 2019, 31(4) | pp.233~240 | number of Cited : 0
    Abstract PDF
    Dyeing is an essential process for improving the value of textile products, but it is considered as one of industries causing pollution because of producing wastewater containing hazardous chemicals as well as using a large amount of water and energy. Global demand for greener technologies in textile field is getting much more attention and accordingly, the use of eco-friendly natural dyes is growing much larger. In textile printing, both dyes and pigments can be used. Pigment printing is more simple process and requires less water and less energy, compared to dye printing. In this study, the organic pigment was prepared from the marigold colorant. Samples were stencil printed, pressed(70℃, 3min) and then heat treated(150℃, 5min). The uptake of polyacrylic acid as a chemical binder was the lowest. In particular, marigold pigments were excellent in color and texture when Guar Gum and Sodium Alginate were used as binders. In addition, the light and washing fastness was rated very high as 4, 4/5 grades, and the rubbing fastness was also excellent as 3 and 4 grades.
  • 3.

    Improving the Color Fastness of the Madder Extract on Tencel Nonwoven

    Bum Hoon Lee | 2019, 31(4) | pp.241~248 | number of Cited : 0
    Abstract PDF
    In this study, improving the wash and rubbing fastness of a natural coloring matter from Madder extract dyed on Tencel nonwoven. The cationic finishing agent(RBP), nonionic finishing agent(HPX) and mordant(PAW) were used to improving the color fastness. The two types(exhaustion and pad-dry-cure) finishing process were investigated with various finishing agent concentration. The color strength, wash and rubbing fastness of Tencel nonwoven dyed with Madder extract have been evaluated by various dye concentration and finishing agent. The exhaustion process treated with the cationic finishing agent(RBP) was effective to improving washing and rubbing fastness.
  • 4.

    Eco-friendly Indigo Dyeing using Baker’s Yeast: Reducing Power according to Alkaline Solution Type

    Kyunghee Son | Younsook Shin | 2019, 31(4) | pp.249~257 | number of Cited : 0
    Abstract PDF
    Baker's yeast(Saccharomyces cerevisiae) was used as a biocatalyst for ecofriendly indigo dyeing and the reducing power of yeast according to the alkaline solution type was compared. NaOH solution, lye, and buffer solution were used as alkaline solutions. The reducing power(K/S value, oxidation/reduction potential(ORP), pH) was monitored according to the elapsed time including the initiation of reduction, peak reduction, and the end of reduction. In all alkaline solutions, it was confirmed that yeast can be used reducing agent in indigo reduction dyeing. The pH stability and reducing power of buffer solution was better than that of NaOH alone. Although, pH and ORP stability of the reduction bath in lye were better than that of buffer solution, K/S value in buffer solution was higher compared to lye. The reducing power was different depending on the starting pH of the dye bath, and it was better when starting at pH 10.70 than at pH 11.30. Fastnesses to washing, rubbing, and light were relatively good with above rating 4. There was no significant difference in colorfastness depending on the type of alkaline solutions.
  • 5.

    Improvement of Migration Fastness of Perfluorocarbons-free Synthetic Suede by Chitosan Pretreatment

    Hye Mi Lee | Ah Rong Kim | Dae Geun Kim | 2019, 31(4) | pp.258~267 | number of Cited : 0
    Abstract PDF
    Synthetic suede without PFCs(perfluorinated compounds) are followed by subsequent high temperature treatment. But migration fastness of synthetic suede may be reduced due to sublimation of disperse dyes that results from the high temperature treatment. Therefore, in this study, chitosan treatment was used to improve the migration fastness before polyurethane dipping process. Polyester fiber was treated with sodium hydroxide aqueous solution before chitosan processing. This samples treated with a chitosan concentration upto 0.5% were dyed and coated with PUD(polyurethane dispersion). The migration fastness was most improved at 0.35%. application This is presumably due to the fact that the chitosan may increase the dye-binding capability through intermolecular hydrogen bonding.
  • 6.

    Dyeing Characteristics of Fermented Caesalpinia Sappan L. Wood Extract with Chitosan-Acetic Acid Solution and Illite Powder

    Park Youngmi | 2019, 31(4) | pp.268~275 | number of Cited : 0
    Abstract PDF
    In this study, silk fabrics was dyed with sappan wood extracts fermented for 5 and 15 days, respectively, and then the dyeability, durability and the functionality of the dyed silk were investigated. Before dyeing, the silk was pretreated with chitosanacetic acid solution or chitosan acetic acid and illite blend solution. Thereafter, UV-Visible transmittance, color, fastness, antimicrobial activity, and the FIR emissivity were analyzed. As a result, the K/S value was higher in the samples that were not pre-treated or fermented. Regardless of fermentation, the lightfastness was not significantly different. The color fastness to washing was slightly better when the samples were pretreated with chitosan-acetic acid and illite, and then dyed with extracts fermented 5 days. In addition, all samples showed high antimicrobial activity of 99.9%, regardless of the fermentation. Far-infrared emissivity was confirmed to be slightly increased by the illite and chitosanacetic acid solution treatment compared to the untreated sample.
  • 7.

    Antimicrobial and Water Repellency Effect of Functional Cotton Fiber with ODDMAC(octadecyl dimethyl(3-triethoxy silylpropyl) ammonium chloride)

    Hyeji Jeon | Jaewoong Lee | 2019, 31(4) | pp.276~287 | number of Cited : 1
    Abstract PDF
    In this study, cotton fibers were coated with a different weight percentage of octadecyl dimethyl(3-triethoxy silylpropyl) ammonium chloride(ODDMAC) to improve antimicrobial and water repellent properties. First, the ODDMAC dissolved in ethanol to prepare a solution. Then the cotton fibers were immersed in the ODDMAC/ethanol solution for 10 minutes at ambient temperature and dried at 80°C for 3 minutes followed by curing. The treated cotton fibers were characterized by scanning electron microscopy(SEM) and x-ray photoelectron spectroscopy(XPS). The treated cotton fibers revealed sufficient antimicrobial activity against Klebsiella pneumoniae(ATCC 4352) and Staphylococcus aureus( ATCCBAA-1707). The hydrophobic nature of the treated cotton fibers was characterized by contact angle measurement. The results showed that the cotton fibers treated with the ODDMAC showed excellent hydrophobic properties which improved to 121°.
  • 8.

    A Study on the Physical Properties of Double Raschel Pile Fabric according to Heat Treatment

    Eun Jong Son | Hong Won Park | Young Gu Hwang | 2019, 31(4) | pp.288~297 | number of Cited : 0
    Abstract PDF
    The specimens were heat treated at 180℃, 190℃, 200℃, 210℃ and 220℃ to observe the change of the physical properties of the double raschel pile fabric. The density, tensile strength, weight, elongation, dyeing characteristics, fabric surface morphology and cross sectional shape were observed by heat treatment temperature. Compared with untreated samples, weight, density and tensile strength were increased with increasing heat treatment temperature. No increase was observed at 220℃. In the case of elongation, it increased to 190℃ but thereafter it could not be observed. In the case of uprightness of brushed hair, it was observed that the gap between the yarns was narrowed and the density was increased and the straightness of the yarn and pile yarn was improved by widening the heat treatment temperature. As a result, it was observed that the uprightness was remarkably improved and the bulky properties was increased. It was also observed that the increase of the dyeability was observed with increasing the heat treatment temperature.
  • 9.

    The Mechanical Properties and Hand Evaluation of Bedclothes with Hollow Spun Yarn

    Hyunseuk Choi | Hyunmi Jang | Moonkyu Jung and 2other persons | 2019, 31(4) | pp.298~311 | number of Cited : 0
    Abstract PDF
    In this study, the mechanical properties and hand characteristics of the knitted and woven fabrics for bedding items are investigated in accordance with fabric structural parameters including the fiber type and proportion, the density of the fabric, and the knit/weave structure. The knit stitches and structure of the knit samples made an effect on tensile properties. The bending, shear and compression properties for the knit fabric were mainly affected by fiber contents of the samples. The tensile and bending properties of woven samples were highly correlated with the fabric density, thickness and structure, and those shear and compression properties were affected by the fiber contents and structure. Consequently, the primary hand values of the selected samples we developed were estimated to have good smoothness, fullness and softness, and soft feeling, which is well correlated to the parameters of consumer preference such as softness, warmness, and bulkiness. Also, their total hand values were increased.
  • 10.

    The Mechanical Properties and Hand Evaluation of Clothing Fabrics using Soluble Spun Yarn and Stretch Fibers

    Hyunseuk Choi | Hyunmi Jang | Moonkyu Jung and 1other persons | 2019, 31(4) | pp.312~322 | number of Cited : 0
    Abstract PDF
    The mechanical properties of developed fabrics which were composed of soluble yarns and stretch fibers were analyzed using the Kawabata Evaluation System. The following findings were obtained from this investigation. Fabrics woven with lightweight yarns can be easily deformed by external forces. But when the fabric were woven using thick lightweight yarns reduced the slippage between the fibers, which makes it difficult to deform due to external force, thereby maintaining a certain space from the human body. As for the weight of the fabric per unit thickness, it was found that fabrics were compose of lightweight spun yarn was lightweight relatively. Lightweight yarns were more flexible than regular yarns because of the reduced bending and shear properties that greatly affect the lattice pattern. smoother, more flexible, and the better the bend was recovered. As fabrics increased content of using of lightweight spun yarn was increased flexible and smooth, and bending recovery.
  • 11.

    Bioactive Characteristics of Sorghum Extract/Poly(vinyl alcohol) Composite Nanoweb Produced by Electrospinning

    Hyun Ju Lee | Jae Woo Jeon | So Yeon Jung and 1other persons | 2019, 31(4) | pp.323~331 | number of Cited : 0
    Abstract PDF
    Sorghum is a rich source in phytochemicals, such as tannins, phenolic acids, anthocyanins, phytosterols and policosanols. Sorghum has been known to have antimicrobial, antiinflammatory, antioxidant properties. In this study, poly(vinyl alcohol)(PVA)- sorghum extract(SE) composite nanoweb was produced by electrospinning and its characteristics including bioactivities were investigated. The SE had antimicrobial and antiinflammatory activities as well as a reduced cytotoxicity. The PVA-SE nanoweb had a highly enhanced antimicrobial activity compared to PVA nanoweb. The amount of proinflammatory cytokine released from macrophages treated with the PVA-SE nanoweb was reduced. The PVA-SE nanoweb can be a potential candidate for medical and cosmeceutical materials providing antimicrobial and antiinflammatory activities with a low degree of cytotoxicity.
  • 12.

    Study on the Preparation and Properties of 1-Step Twisted Nylon Yarns

    Jun Young Lee | Jae Woo Jeon | Dong Kyu Park and 3other persons | 2019, 31(4) | pp.332~340 | number of Cited : 0
    Abstract PDF
    Due to the change in lifestyle, new sensible materials for sportswear and outdoor are needed. This study is conducted in order to obtain the data for sensible materials through nylon twist process. 1-step nylon twisting machine was used to set the optimum twist process. DSC measurements of twisted nylon yarn showed crystallization temperatures around 170℃ and melting temperatures around 220℃. Nylon 40D/13F DTY and Nylon 50D/48F DTY showed optimal results at 160°C, 1,500 T/M(Turns per meter), and Nylon 70D/68F DTY at 160°C, 1,200 T/M(Turns per meter) after 1-step twist process. Also, Nylon 40D/13F DTY was confirmed to have inter-layer property deviation of ±5 percent.
  • 13.

    Preparation and Study of Bioactive Characteristics of Alginate Sponge Containing Quercetin-encapsulated Nanocapsules

    Woo Jin Kim | Shuwen Xu | Hyun Soo Noh and 3other persons | 2019, 31(4) | pp.341~353 | number of Cited : 0
    Abstract PDF
    Quercetin is one of flavonoids widely distributed in the plants and well known to have antioxidants, antiinflammatory, antimicrobial properties. In this study, alginate sponge containing quercetin-encapsulated nanocapsules was prepared by miniemulsion polymerization, dyring/crosslinking method and their bioactive characteristics were investigated. Alginate sponge containing quercetin-encapsulated nanocapsules were evaluated using a field emission scanning electron microscope(FE-SEM), a high performance liquid chromatography, cell viability, DPPH radical scavenging activity and antibacterial activity. The study indicates that alginate sponge containing quercetin-encapsulated nanocapsules had significant antioxidant, antiinflammatory and antibacterial activities. This study suggested that alginate sponge containing quercetin-encapsulated nanocapsules can be a potential candidate for medical materials.
  • 14.

    Characterization of PETG Thermoplastic Composites Enhanced TiO2, Carbon Black, and POE

    Seong-Hun Yu | Jong-hyuk Lee | Jee-hyun Sim | 2019, 31(4) | pp.354~362 | number of Cited : 0
    Abstract PDF
    In order to apply thermoplastic composites using PETG resin to various industrial fields such as bicycle frames and industrial parts, it is necessary to verify the impact resistance, durability and mechanical properties of the manufactured composite materials. To improve the mechanical properties, durability and impact resistance of PETG resin, an amorphous resin, in this study, compound and injection molding process were carried out using various additives such as TiO2, carbon black, polyolefin elastomer, and PETG amorphous resin. The thermal and mechanical properties of the thermoplastic composites, and the Charpy impact strength, The analysis was performed to evaluate the characteristics according to the types of additives. DSC and DMA analyzes were performed for thermal properties, and tensile strength, flexural strength, and tensile strength change rate were measured using a universal testing machine to evaluate mechanical properties. Charpy impact strength test was conducted to analyze the impact characteristics, and the fracture section was analyzed after the impact strength test. In the case of POE materialadded thermoplastic composites, thermal and mechanical properties tend to decrease, but workability and impact resistance tend to be superior to those of PETG materials.