Sen'i Gakkaishi
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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Volume 69, Issue 1
Journal of the Society of Fiber Science and Technology
Displaying 1-10 of 10 articles from this issue
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Reviews and News
Foreword
Review
Report
Active Young Researchers in Fiber and Textile Fields
Series of Reviews for High Performance Papers, Specialty Papers 1
Series of Reviews for Cultures Associated with “Water” 16
Original Articles
Transactions
  • Comparison for the Leachates from Kenaf Stems Obtained in the Hydrothermal Process
    Hideaki Minami, Junichiro Kadono, Shigenori Nishiuchi, Yukio Sugimura, ...
    Article type: Original Articles
    Subject area: Transactions
    2013 Volume 69 Issue 1 Pages 1-7
    Published: January 10, 2013
    Released on J-STAGE: February 09, 2013
    DOIhttps://doi.org/10.2115/fiber.69.1
    JOURNAL FREE ACCESS
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    In order to enhance the utilization of kenaf stems, chemical stabilities against hydrothermal reactions were compared between core parts and bast ribbons. With increasing the treatment temperature, hemicellulose fractions contained in the intercellular matrix regions were preferentially decomposed. This tendency was more markedly observed when the treatments were applied to kenaf core parts. It seems that LCC(Lignin carbohydrate complex)in the intercellular matrix regions are constructed by settling hemicellulose fractions on the backbone of lignin via calcium complex bonding.
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  • Effects of Some Waving Treatment Conditions on the Permanent Waving Performance of Human Hair
    Kyohei Joko, Keiko Sakurai, Yukari Morimoto
    Article type: Original Articles
    Subject area: Transactions
    2013 Volume 69 Issue 1 Pages 8-12
    Published: January 10, 2013
    Released on J-STAGE: February 09, 2013
    DOIhttps://doi.org/10.2115/fiber.69.8
    JOURNAL FREE ACCESS
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    The effects of the chemical and mechanical waving treatment conditions on the permanent waving performance of hair tresses waved by a standard waving procedure simulating commercial practice were investigated. The evaluation of the shape of the waved samples was performed in dry state after one day. Comparing the wave performance of 5 minutes reduced hair tress in the ammonium thioglycolate solution with the different concentrations, the number of curl tops increased with increasing the concentration of the thiolate anion, which is the active reducing form on waving. This suggests that the formation of curl is dependent on the protein chain rearrangement of the areas in hair fiber on which RS- initially acts. The higher the initial stress of hair was induced by wrapping on the rod, the greater the protein chains in the reduced area rearranged, which has results in the waved hair with the large number of curls. It was found, in addition, that the protein chain structure change occurred during the neutralizing process may affect the waving performance.
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  • Dyeing Behavior of Keratin Fibers with Oxidative Dyeing System
    — Mechanism for the Effects of EDTA/ Ascorbic Acid Mixture —
    Satomi Kuwabara, Kyohei Joko
    Article type: Original Articles
    Subject area: Transactions
    2013 Volume 69 Issue 1 Pages 13-18
    Published: January 10, 2013
    Released on J-STAGE: February 09, 2013
    DOIhttps://doi.org/10.2115/fiber.69.13
    JOURNAL FREE ACCESS
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    The effects of ethylenediaminetetraacetic acid(EDTA)and ascorbic acid on the dye uptake of oxidative dyes for wool fibers dyed with the couple system of p-phenilenediamine/p-amino-o-cresol(pPDA/pAOC)and p-amino phenol/p-amino-o-cresol(pAP/pAOC)were investigated. The precursor/coupler dyeing solution with both EDTA and ascorbic acid maintains colorless during the dyeing period, indicating that the oxidative coupling reaction was inhibited by collaborative effects of both EDTA and ascorbic acid. When applied at pH10.0 in both pPDA/pAOC and pAP/pAOC dyeing system included EDTA and ascorbic acid, the amount of adsorbed oxidative dye in both dyeing systems was reduced compared with that when applied in the absence of both EDTA and ascorbic acid, although its effect depends on the concentration of hydrogen peroxide. In addition, when applied at pH8.0 in the presence of EDTA and ascorbic acid, a significantly lower level of adsorbed oxidative dye was produced, especially in the case of pPDA/pAOC dyeing system the uptake of bandrowski's bases that is self coupling dye of pPDA was suppressed. It is concluded that the ability of both additives to inhibit also serves at the interface between the dyeing solution and the fiber surface.
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  • Effects of Some Treatment Conditions on the Wave Performance of Human Hair by Permanent Waving Procedure Incorporated Relaxation Process
    Kyohei Joko, Keiko Sakurai
    Article type: Original Articles
    Subject area: Transactions
    2013 Volume 69 Issue 1 Pages 19-25
    Published: January 10, 2013
    Released on J-STAGE: February 09, 2013
    DOIhttps://doi.org/10.2115/fiber.69.19
    JOURNAL FREE ACCESS
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    The effects of the chemical and mechanical treatment conditions on the permanent wave performance of hair tresses treated with a proposed waving procedure modified by the incorporated relaxation process in the conventional waving technique were investigated. The evaluation of the shape of the waved samples was performed in dry state after one day. As compared to the results obtained with the conventional technique, all of the tresses of reduced for 3 and 5 minutes with the appropriate range of pH and concentration in the ammonium thioglycolate(ATG)solution were superior in wave strength and stability with increasing both pH and ATG concentration in reducing solution. This effectiveness is caused by some rearrangement of the protein chains in the stress-supporting phase in the hair and dependent on the proportion of ionized sulfhydril groups(KS-)generated by the cleavage of the disulfide bonds. It was found, in addition, that the effectiveness of relaxation process was also dependent on the degree of initial stress wrapped on the rod. These findings indicate that in the proposed waving procedure modified by the incorporated relaxation process, both concentration of KS- in the reduced area within the hair and degree of the initial bending stress wrapped on the rod are the main factor of the permanent wave formation of human hair. Accordingly the incorporation of relaxation process to the conventional technique brought the shortening of the reducing and neutralizing process at the completion of the permanent waving procedure. The shortened reducing and neutralizing process brought about decrease in the damage caused by the reduction and oxidation reaction, resulting in major benefits as observed by appearance and feel.
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