繊維学会誌
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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62 巻, 5 号
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時評
特集<繊維関連分野における自己組織化現象Part2>
レポート<平成17年度研究助成成果報告>
一般報文
  • 製紙用ポリエステルワイヤーの電子線グラフトによる親水化
    近藤 幸江, 宮崎 孝司, 竹内 奈々, 桜井 謙資, 金子 純一
    2006 年 62 巻 5 号 p. 95-99
    発行日: 2006年
    公開日: 2006/06/10
    DOIhttps://doi.org/10.2115/fiber.62.95
    ジャーナル フリー
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    We modified the poly(ehtylene terephtalate) (PET) wire meshes with hydrophilic monomers by the electron beam irradiation induced graft-polymerization method, to protect the PET meshes from pitch stain in papermaking process of recycled papers. Di-hydroxyethyl methaclylate (HEMA) with the hydroxyl group, acrylic acid (AA) with the carboxylic group, acrylamide with the amide group and glycidyl methacrylate (GMA) with the epoxide group were used for grafting onto the fiber surfaces of the PET meshes. Grafting efficiency and hydrophilic property were studied by means of grafting ratio and FTIR spectra and by contact angle of water, respectively. As a result, PET mesh which di-hydroxylated after GMA grafting was found to show the most hydrophilic properties.
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  • 綿繊維の液体アンモニア処理-液体アンモニア及び高温水処理による綿繊維の構造変化-
    柳内 雄一, 清水 義雄
    2006 年 62 巻 5 号 p. 100-105
    発行日: 2006年
    公開日: 2006/06/10
    DOIhttps://doi.org/10.2115/fiber.62.100
    ジャーナル フリー
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    Five kinds of cotton fabrics were treated using a practical liquid ammonia unit and consequently treated with hot water at 70°C or 130°C for two hours. The lattice type, the washing shrinkage, the water retention, the moisture absorbency, the dry and wet crease recovery angle and the bending repulsion were measured. Five data items for each measurement were averaged and analyzed. Due to the hot water treatment after liquid ammonia treatment, the dry crease recovery angle and the bending repulsion were decreased; on the other hand, the water retention, the wet crease recovery angle and the moisture absorbency were increased. These changes represent a rearrangement of the hydrogen bonding from a non-swollen state to a swollen state and stabilization of the fiber shape in the swollen state. Through this stabilization, a decrease in the washing shrinkage is thought to occur. The changes of the lattice type by the hot water treatment occurred a little at 70°C and occurred largely at 130°C. On the other hand, the washing shrinkage and other physical properties changed largely at 70°C. These results suggest that the decrease of washing shrinkage and the changes in the other properties depend mainly on the changes in the amorphous region.
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  • Microbial Degradation of Ethylene Glycol Dibenzoate by Rhodococcus sp. 2Cb
    Shichao Xu, Takeshi Yamaguchi, Shin-ichiro Suye, Teruo Hori
    2006 年 62 巻 5 号 p. 106-110
    発行日: 2006年
    公開日: 2006/06/10
    DOIhttps://doi.org/10.2115/fiber.62.106
    ジャーナル フリー
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    Strain 2Cb that hydrolyzed the ester bond of ethylene glycol dibenzoate (EGDB) efficiently was isolated. We describe its isolation and its identification as a Rhodococcus sp. based on morphological and rDNA sequencing. In a medium containing 0.5% of EGDB at pH 7.0, 30°C, the strain completely degraded EGDB in 30 days. The strain also grew on benzoic acid, p-hydroxybenzoic acid, and protocatechuic acid as the sole source of carbon. Distribution study of EGDB degrading enzymes indicated that the degradation activity was found on the cell surface.
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