Sen'i Gakkaishi
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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Volume 66, Issue 8
Displaying 1-11 of 11 articles from this issue
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  • Anti-yellowing Finishing of Nylon Fiber Using a Reaction with Reducing Sugar
    Takeru Ohe , Yurika Yoshimura
    2010 Volume 66 Issue 8 Pages 187-193
    Published: 2010
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.2115/fiber.66.187
    JOURNAL FREE ACCESS
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    It is well known that nylon fibers turn yellow during long storage in wooden boxes or corrugated cartons, where the nylon fibers react with various aromatic aldehydes gradually generated from wood or crude paper. In general,in the textile fields, formaldehyde is a useful reagent to prevent nylon products from turning yellow, but it is also one of the main materials causing the sick building syndrome (SBS). In this paper, we investigated reaction conditions between nylon 6 fibers and various reducing sugars to prevent nylon fibers from turning yellow due to vanillin, which is one of the aromatic aldehydes. Furthermore, their other fiber properties, such as mechanical strength and hygroscopicity,were also examined.
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  • Effect of Friction Coefficient of White Cloth on Rub-fastness
    Keiko Suganuma
    2010 Volume 66 Issue 8 Pages 194-198
    Published: 2010
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.2115/fiber.66.194
    JOURNAL FREE ACCESS
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    Rub-fastness of dyed fabrics is a matter of importance for practical use. Generally speaking, vat and naphthol dyes tend to suffer from poor rub fastness. However poor it is, it depends on the friction coefficient between dyed fabric and rubbed cloth. That is, smooth one should have good rub-fastness. In this paper rubbing-off behavior of denims using various white cloths is investigated from the kinetic viewpoint so that the interesting results are obtained. That is, the values of the rate constant k1 of transfer of dye from dyed fabric to white cloth and the equilibrium constant K (k1/k-1) are ranged about ten times by various white cloths. These values depend on friction coefficient of white cloth, with having nothing to do with variety of fibers, fabrics and so on. Natural logarithm of each constant is linearly related to the reciprocal of friction coefficient. It suggests that the measurement of friction coefficient should be effective for standard of rub-test in addition to a designation of cloth or adjustment of moisture regain.
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  • Chinese Ink Blurring on Paper and Its Evaluation
    Toshiaki Uchiyama, Tatsuo Yamauchi
    2010 Volume 66 Issue 8 Pages 199-203
    Published: 2010
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.2115/fiber.66.199
    JOURNAL FREE ACCESS
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    Chinese ink blurring on various papers for calligraphy was examined by the use of non-diluted or diluted inks. The blurring indices based on Klemm Method, the ink absorption, the unevenness of the outlines at the blurring heads, represented well the changing of the blurring. The blurring evaluation based on human's feeling also corresponded to the changing of the blurring indices. Specially, the blurring index based on the unevenness of the outlines at the blurring heads, as show in Fractal dimension, was preferable to represent the blurring evaluation based on human's feeling.
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  • Antibacterial and Moisture Retention Evaluation of Cotton Fabric Treated with Chitosan Incorporated Ceramide Microcapsules
    Hanchieh Wang, Leeya Yu, Chonyu Chen
    2010 Volume 66 Issue 8 Pages 204-208
    Published: 2010
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.2115/fiber.66.204
    JOURNAL FREE ACCESS
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    This study used chitosan as the main capsule wall material, and sodium tripolyphosphate as a cross-linking reagent, to encapsulate rose hip oil and ceramide. The experiments investigated three formulations with their moisture retention and antibacterial tests (JIS L 1902's). The results showed that the fabric treated (after washing test) with microcapsules incorporated with rose hip oil and ceramide had a moisture retention value of 13.72 %, which is improved 25.92 % as compared to blank chitosan. The same sample also expressed an inhibition zone in the qualitative testing of Staphylococcus aureus and Candida albicans ; the sterilizing value were 4.4 and 4.04, respectively (quantitative test). The experimental results proved that the antibacterial effect was improved, and moisture retention increased by 47 %.
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