繊維学会誌
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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67 巻, 9 号
選択された号の論文の11件中1～11を表示しています
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  • 制御グラフト重合を利用したPETの表面改質ならびにアパタイトとの複合化への応用
    本柳 仁, 福本 悠吾, 太田 尚樹, 箕田 雅彦
    2011 年 67 巻 9 号 p. 193-199
    発行日: 2011/09/10
    公開日: 2011/10/10
    DOIhttps://doi.org/10.2115/fiber.67.193
    ジャーナル フリー
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    Organic ⁄ inorganic hybrid materials have attracted much attention because they are capable of combining the characteristic features of both organic and inorganic substances. This study aims to fabricate novel hybrids consisting of PET and apatite as components and to improve the mechanical properties of the hybrid through designing the interfacial structure between PET and an apatite layer. To this end, a PET substrate was modified with graft polymer chains bearing Si(OCH3)3 functions through the surface-initiated atom transfer radical polymerization (ATRP) and then subjected to the hybrid formation with apatite by a process mimicking biomineralization. This process was achieved by soaking the surface-modified PET substrate in a simulated body fluid (SBF) with ion concentrations nearly equal to human blood plasma. In this study, the PET substrate was modified with hyperbranched graft polymers with pendant Si(OCH3)3 functions, then coated with a calcium silicate gel and finally soaked in SBF for 3d to form the target PET ⁄ apatite hybrid. To evaluate the effects of the surface modification with grafted polymers on the mechanical properties of the PET ⁄ apatite hybrid, the interfacial bond strength between the PET substrate and the apatite layer was estimated by a peel test using a commercial adhesive tape.
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  • Anti-yellowing Finishing of Nylon Fiber Using a Reaction with Reducing Sugar (2)
    -Reaction in Aqueous Solution Containing a Reducing Reagent-
    Takeru Ohe, Yurika Yoshimura
    2011 年 67 巻 9 号 p. 200-205
    発行日: 2011/09/10
    公開日: 2011/10/10
    DOIhttps://doi.org/10.2115/fiber.67.200
    ジャーナル フリー
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    It is well known that nylon fibers turn yellow during long storage in a wood box or corrugated carton because of the reaction of the fibers with the aromatic aldehyde contained in the crude paper or wood. In our previous paper, a protective reaction of the amino groups in nylon fibers by a reducing sugar in organic solvents prevented them from turning yellow caused by vanillin, which is one of the aromatic aldehydes. In this paper, the same reactions were performed in an aqueous solution, which is generally very safe and useful for industrial applications, including these for various environmental problems. Interestingly, the reaction of nylon 6 fibers with a reducing sugar in an aqueous solution containing a reducing reagent such as sodium hydrosulfite prevented their color from changing to brown due to a melanoidin reaction, and the obtained nylon 6 fibers exhibited good anti-yellowing effects against vanillin.
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技術報文
  • カチオン化ポリエステル繊維を用いた水中細菌の吸着除去
    近藤 康人, 安中 秀幸, 藤田 雅弘, 久保川 博夫, 新井 正直, 恩田 紘樹, 本田 茂孝, 岩崎 春彦, 鵜飼 惠三
    2011 年 67 巻 9 号 p. 206-209
    発行日: 2011/09/10
    公開日: 2011/10/10
    DOIhttps://doi.org/10.2115/fiber.67.206
    ジャーナル フリー
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    We developed an effective system to eliminate microorganisms from environmental water using cationic polyester fibers. The polyester fibers were cationized by dipping with 1% Poly (diallyldimethyammonium chloride) solution. The zeta potential of polyester fiber particles and some bacteria was measured using microscopic electrophoresis. The mean zeta potential of regular polyester fiber particles was -25mV and cationic polyester fiber particles was +45mV. The mean zeta potential of the bacteria, Bacillus subtilis was -15mV, Escheria coli, -25mV Legionella pneumophila, -25mV. The microbial suspension is pumped through the cationic polyester fiber filter. Bacteria electro-adsorption to the cationic polyester fibers was examined by bioassay. Relatively large numbers of bacteria could be removed by adsorption to the cationic polyester fiber. It was observed by electron microscopy that the bacteria adsorbed on the surface of cationic polyester fibers.
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