繊維学会誌
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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69 巻, 2 号
繊維学会誌
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繊維と工業
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がんばる若手研究者
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  • Preparation of Textile Nonwoven Foams Using Elastomeric Binder Fibers for Automotive Cushioning Materials
    Kim Ki-Young, Doh Sung Jun, Im Jung Nam, Jeong Won Young, An Hyo Jin, ...
    原稿種別: 報文
    専門分野: 一般報文
    2013 年 69 巻 2 号 p. 27-33
    発行日: 2013/02/10
    公開日: 2013/04/09
    DOIhttps://doi.org/10.2115/fiber.69.27
    ジャーナル フリー
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    The physical and mechanical properties of textile nonwovens have been exploited for the replacement of polyurethane(PU)foams in car interiors, in particular, cushioning materials for car seats. Polyethylene terephthalate(PET)hollow fibers and elastomeric bicomponent binder fibers were used to manufacture automotive nonwovens by carding processes, and post bonding processes such as needle punching, thermal bonding or through-air bonding. The physical and mechanical properties of nonwovens were thoroughly investigated with respect to the effects of bonding processes. The tensile strength and elongation for the nonwovens were significantly improved by the combined needle punching and through-air bonding processes. In comparison with the PU foam, the nonwovens showed a greater hardness, and their higher support factors ranging from 7.7 to 11.0 indicated the improved seating performances with better air permeability.
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  • 疎水性側鎖をもつイオンポリマーの合成と液晶秩序形成
    武 金枝, 氏家 誠司
    原稿種別: 報文
    専門分野: 一般報文
    2013 年 69 巻 2 号 p. 34-38
    発行日: 2013/02/10
    公開日: 2013/04/09
    DOIhttps://doi.org/10.2115/fiber.69.34
    ジャーナル フリー
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    Thermotropic ionic liquid crystal polymers were synthesized by ion complexation of polyacrylic acid and low-molecular-weight amines with hydrophobic chains. The ionic liquid crystal polymers obtained in this research clearly exhibited a thermotropic liquid-crystalline phase on the heating and cooling processes. The ionic liquid crystal polymers(PA/N-6-n)consisting of polyacrylate ions and cationic mesogens with an azobenzene core induced a smectic A phase. The thermal stability of the smectic A orientational structure in PA/N-6-n depended on a terminal group of the cationic mesogen. Moreover, the ionic liquid crystal polymers composed of the polyacrylate ions and ammoniums with long alkyl chains(without mesogenic cores)also revealed the smectic A phase. These results for the liquid crystal formation of the ionic liquid crystal polymers indicate that the ionic interaction acts effectively in producing the liquid-crystalline state through an ionic aggregation.
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  • Thermoplastic Polyesters of 2-Pyrone-4,6-Dicarboxylic Acid (PDC) Obtained from a Metabolic Intermediate of Lignin
    Shikinaka Kazuhiro, Hashimoto Yoshiki, Kajita Shinya, Masai Eiji, Kata ...
    原稿種別: 報文
    専門分野: 一般報文
    2013 年 69 巻 2 号 p. 39-47
    発行日: 2013/02/10
    公開日: 2013/04/09
    DOIhttps://doi.org/10.2115/fiber.69.39
    ジャーナル フリー
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    2-Pyrone-4,6-dicarboxylic acid (PDC), a chemically stable metabolic intermediate of lignin, was converted into the corresponding acid chloride and thermoplastic polyesters were synthesized by polycondensation with several aromatic diols. The polyesters exhibited high decomposition temperature due to the presence of aromatic group adjacent to the PDC group. The films prepared by hot-pressing gave relatively high fracture stress that is almost comparable to poly(ethylene terephthalate) (PET) and showed oriented crystallization upon stretching.
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