Sen'i Gakkaishi
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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Volume 59, Issue 2
Displaying 1-15 of 15 articles from this issue
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Feature
Commentation
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  • Water Oxidation Sensibilized by Tin-Porphyrin
    Sheng Wang, Kazuiki Enomoto, Sachiko Tanizaki, Isao Tabata, Kenji Hisa ...
    2003 Volume 59 Issue 2 Pages 48-52
    Published: 2003
    Released on J-STAGE: July 31, 2004
    DOIhttps://doi.org/10.2115/fiber.59.48
    JOURNAL FREE ACCESS
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    A tin meso-tetra(p-sulphophenyl)porphine sodium salt(SnTPPSNA4) was synthesized and its photochemical properties were characterized by measuring UV-VIS,cyclic voltammograms and fluorescence spectra.The SnTPPSNA4 was applied to a new type of photoinduced oxygen evolution system as a photosensitive oxidant and the best experimental conditions for this research are discussed in this paper.From the results,it is clear that,under the present condition,SnTPPSNA4 could efficiently oxide water to evolve oxygen when compared to the conventional oxidant-ruthenium complex([Ru(bpy)3]2+).
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  • Dyeing and Mechanical Properties of Wool Fiber Treated with Ammonia Gas
    Muncheul Lee, Sun-Ji Park, Tomiji Wakida, Aya Hayashi, Shinzo Ishida
    2003 Volume 59 Issue 2 Pages 53-57
    Published: 2003
    Released on J-STAGE: July 31, 2004
    DOIhttps://doi.org/10.2115/fiber.59.53
    JOURNAL FREE ACCESS
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    Merino wool fiber and fabric were treated with ammonia-gas varying the condition, and the fiber was dyed with two acid dyes, C.I. Acid Red 13 and C.I. Acid Blue 83. Apparent dyeing rate, equilibrium dye uptake and dyeing transition temperature were measured. The dyeing rate and equilibrium dye uptake of the treated wool increased with both acid dyes. Also, dyeing transition temperature for both acid dyes decreased by the treatments. Therefore, it seems that acid dyes penetrate by the intercellular diffusion through the interscale Cell Membrane Complex (CMC) of wool. Furthermore, shearing and bending modulus G, B decreased a little by the treatment. The treatment is not always defective to improve the soft hand of the wool fabric.
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  • Dyeing and Mechanical Properties of Cellulosic Fabrics Processed by High Pressure Steaming
    Naohisa Ohshima, Muncheul Lee, Dong Seok Jeong, Aya Hayashi, Tomiji Wa ...
    2003 Volume 59 Issue 2 Pages 58-62
    Published: 2003
    Released on J-STAGE: July 31, 2004
    DOIhttps://doi.org/10.2115/fiber.59.58
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    Natural and regenerated cellulosic fabrics were processed by high-pressure steam at 180°C for 5 min. Crystallinity, moisture regain, water absorption, dyeing properties, and mechanical properties were investigated. The crystallinity of the fabrics increased considerably, whereas the water absorption and the dye uptake decreased. The residual shrinkage was improved, especially for regenerated cellulosic fabrics. The shearing and bending parameters by Kawabata Evaluation System were apparently decreased by the high-pressure steaming except for cotton fabric. Therefore, the high-pressure steaming of cellulosic fabrics is effective to improve the fabric hand as well as the washing shrinkage.
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  • Dependency on Turn-round Angle of a Moving Mannequin Stand with a Flared Skirt about Evalution of Clothing Appearance
    Momoko Sugimura, Mitsuo Matsudaira
    2003 Volume 59 Issue 2 Pages 63-71
    Published: 2003
    Released on J-STAGE: July 31, 2004
    DOIhttps://doi.org/10.2115/fiber.59.63
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    The purpose of this study is to evaluate aesthetic appearance of flared skirts in dynamic state objectively, in consideration of the actual wearer's motion. We studied the relationship between subjective values obtained from sensory test of moving skirts' appearance and turn-round angle of a mannequin stand. From the agreed results of panels, we found the optimum conditions of turn-round angle and speeds of a mannequin stand. By using subjective values obtained from sensory test under the optimum conditions, we selected mechanical and vibrational parameters for an objective evaluation equation of beautiful appearance of moving flared skirts by cluster analysis. The objective evaluation equations were derived for “flowing”, “rhythmical”, “airy”, “flexible”, “graceful”, “lively”, “dynamic” and “beautiful” moving flared skirts by using those parameters. The basic and combined mechanical parameters such as WT and ³√G⁄W are related to moving clothing appearance significantly. The total beautiful appearance of flared skirts in dynamic state was evaluated mainly by flowing, rhythmical, airy, flexible, graceful and lively movement subjectively.
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Technical Paper
  • Dyeing of polyester Fabrics with Vat Dyes by Dry Heat,Super Heat,and High Pressure Steam Processings
    Dong Seok Jeong, Masumi Saito, Tomiji Wakida, Muncheul Lee, Kenji Nish ...
    2003 Volume 59 Issue 2 Pages 72-75
    Published: 2003
    Released on J-STAGE: July 31, 2004
    DOIhttps://doi.org/10.2115/fiber.59.72
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    Polyester fabrics were padded with four vat dye baths containing sodium hydrosulfite(Na2S2O4) and NaOH, or vat dyes alone. After drying, the fabrics were processed by hot air at 210°C for 5 min, super heat steam (HTS) at 180°C for 10 min, and high pressure steam (HPS) at 130°C for 10min, respectively, and subsequently soaped. The K⁄S values and L*C*h color parameters were measured. The fabrics after the processings by dry heat, HT and HP steamings showed considerably high color depth not only for the dye alone but also for the Na2S2O4 and NaOH. Therefore, it seems that quinone, leuco form and vat acid structures of the vat dye are all effective for coloration of polyester fabric by dry heat, HTS, and HPS processings after padding. Even so, it is a matter of course to select the processing conditions for each dye.
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