Sen'i Gakkaishi
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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Volume 68, Issue 11
Journal of the Society of Fiber Science and Technology
Displaying 1-16 of 16 articles from this issue
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Active Young Researchers in Fiber and Textile Fields
The Society of Fiber S & T, Japan Prize for Excellence in Fiber Research
The Society of Fiber S & T, Japan Prize for New Fiber Technology
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Series - Cultures Associated with “Water” 14
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Original Articles
  • Effect of the Pretreatment to Permanent Wave Formation of Hair
    Minako Amaya, Manabu Sawada, Haruhiko Yoshida, Kyohei Joko
    2012 Volume 68 Issue 11 Pages 283-289
    Published: November 10, 2012
    Released on J-STAGE: December 10, 2012
    DOIhttps://doi.org/10.2115/fiber.68.283
    JOURNAL FREE ACCESS
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    The effect of the modification of human hair components on the permanent wave set of a human hair was investigated by analyzing the wave performance for both normal hairs and pretreatment hairs. Pretreatments carried out by treating the normal hairs with formic acid and acetic acid, ethanol/ chloroform, and boiling water. The difference between the protein chain rearrangements to equilibrium the curled configuration of normal and pretreatment hairs were observed during drying of the waved hairs. Specifically, the hair samplers pretreated with formic acid and acetic acid or ethanol/chloroform have made it difficult to maintain the waving performance in wet state. These results suggest that the constituent components of CMC play an important role to equilibrium the curled configuration by effectively operating as an adhesion component between the cells. A role of the constituent components of CMC for bleached hairs is also discussed.
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  • Effect of Pulping Conditions on the Properties of Bamboo Paper
    Khine Khine Win, Masaaki Ariyoshi, Masazumi Seki, Takayuki Okayama
    2012 Volume 68 Issue 11 Pages 290-295
    Published: November 10, 2012
    Released on J-STAGE: December 10, 2012
    DOIhttps://doi.org/10.2115/fiber.68.290
    JOURNAL FREE ACCESS
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    We investigated the effect of pulping processes on the strength properties of bamboo paper. Bamboo was pulped by hand and by the kraft process. Handsheets were formed from the pulps obtained and their properties were measured before and after accelerated aging. The pulp made by hand had a lower water retention and a higher initial viscosity than the kraft pulp. Paper made from the hand-made pulp had a considerably higher aging resistance than paper made from the kraft pulp. All the measurements revealed that acid-free paper made from the hand-made pulp retained its mechanical strength (especially folding endurance) better during accelerated aging than acid-free paper made from the kraft pulp. Retention of the folding endurance depended considerably on the retention of the zero-span tensile strength during sealed-tube aging. With the exception of zero-span tensile strength, hand-pulped and kraft-pulped acidic papers did not exhibit any significant difference in their mechanical properties. Although the paper made from the hand-made pulp had higher sheet strength than the paper made from the kraft pulp, both papers exhibited similar reductions in the surface pH during tube aging. Before and after accelerated aging, the paper made from kraft pulp produced by cooking at 170°C for 90 min had higher intrinsic fiber strength than the paper made from kraft pulp produced by cooking at 160°C for 60 min for both acid-free and acidic papers.
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  • Mechanical Properties of Yarns Dyed by Pigments
    Mari Inoue, Nasil Fang, Hiroyuki Fujita, Yasushi Saeki, Minoru Furutan ...
    2012 Volume 68 Issue 11 Pages 296-303
    Published: November 10, 2012
    Released on J-STAGE: December 10, 2012
    DOIhttps://doi.org/10.2115/fiber.68.296
    JOURNAL FREE ACCESS
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    Furutani et al. [1-3] developed a technology for constructing trial fabrics. This technology consists of the dyeing technology realizing low cost and short term production, and minimizing loss of yarn and amount of drainage. Recently, an apparatus for dyeing with pigments were newly developed, in which the dyeing term was shortened by one-ninth, and the amount of drainage was reduced by one-tenth by the new apparatus. In this study, the mechanical properties of the dyed yarn with pigments by the new apparatus were investigated. The characteristics of yarns dyed with pigments were within the ±4σ of regular yarn group and there was no difference from the yarns dyed with dye stuffs if the concentration of binder was not beyond 10%. Therefore, it makes clear that dyed yarn by using the new apparatus can be utilized for trial fabrics.
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  • Preparation, Structure and Properties of Paper Sheets from Mulberry Bark
    Midori Takasaki, Momoka Yamasaki, Hiromitsu Nakanishi, Hideaki Morikaw ...
    2012 Volume 68 Issue 11 Pages 304-307
    Published: November 10, 2012
    Released on J-STAGE: December 10, 2012
    DOIhttps://doi.org/10.2115/fiber.68.304
    JOURNAL FREE ACCESS
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    Paper sheets were prepared from mulberry bark and the structure and properties of the prepared paper sheets were investigated. Crystallinity and semicrystalline size of (200) reflection of paper sheets were not much difference between the mulberry (Morus alba L.) bark and the kozo (Broussonetia species) bark. Paper sheets prepared from the bark of mulberry showed lower paper density, air resistance and smoothness and higher fiber diameter in comparison with the paper sheets obtained from the bark of kozo. Paper sheets of the mulberry bark were lower anisotropic, tensile strength and Young's modulus than that of the kozo bark.
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