PREPARATION AND PROPERTIES OF EXFOLIATED VERMICULITE-POLYAMIDE 6 NANOCOMPOSITE

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概要

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• Ion-exchange treatment of natural vermiculite (VER) with dodecylammonium (DDA) ions and subsequent preparation of a polyamide 6 (PA6) based nanocomposite was conducted to investigate the potential suitability of VER for use in polymer nanocomposites. In order to investigate the ion-exchange behavior, ground VER powder and DDA were treated at 60℃ for 12h, in which time the intercalation reaction was completed. DDA intercalation was rapid and complete for VER even in dilute DDA solution (0.5 mass%) at a low suspension VER concentration of 1 mass%. The VER-PA6 nanocomposite was formed via exfoliation of a DDA modified VER (DDAVER) layer. DDAVER was melt-kneaded with PA6 in a twin-screw extruder at 260℃. The morphology of the nanocomposite was characterized using X-ray diffraction and transmission electron microscopy. Measurements of the mechanical properties and methanol permeability were also carried out. The DDAVER-PA6 nanocomposite exhibits a high degree of VER exfoliation and the rigidity and gas barrier properties also appear to reflect the nanocomposite morphology. Addition of a small amount of DDAVER with 3 mass% silicate was sufficient to improve the rigidity, heat resistance and barrier properties of the nanocomposite.

著者

• TAMURA KENJI

  National Institute for Materials Science

• MORIMOTO KAZUYA

  National Institute for Materials Science

• USHIROUCHI TAKATSUGU

  Showa KDE Co., LTD

• YAMADA HIROHISA

  National Institute for Materials Science

• HATTA TAMAO

  Japan International Research Center for Agricultural Sciences

• MITO YOUHIKO

  Showa KDE Co., LTD

• Hatta Tamao

  Japan International Res. Center For Agricultural Sci. Ibaraki Jpn

• Morimoto Kazuya

  Photocatalytic Materials Center National Institute For Materials Science

• Yamada Hirohisa

  National Institute For Research In Inorganic Materials

• Yamada Hirohisa

  Photocatalytic Materials Center National Institute For Materials Science

• Ushirouchi Takatsugu

  Showa Kde Co. Ltd

• Mito Youhiko

  Showa Kde Co. Ltd

• Yamada H

  National Institute For Research In Inorganic Materials

• Yamada Hirohisa

  Photocatalystic Materials Center National Inst. For Materials Sci.

• Yamada Hirohisa

  National Institute For Materials Science (nims)

• TAMURA Kenji

  NIMS

• Tamura Kenji

  National Institute For Materials Science (nims)

• Tamura Kenji

  National Institute For Environmental Studies

• Tamura Kenji

  National Cancer Center Hospital Tokyo Jpn

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