Preparation of a Kaolinite-Nylon 6 Intercalation Compound.

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  • Matsumura Asako
    Department of Applied Chemistry and Kagami Memorial Laboratory for Materials Science and Technology, Waseda University
  • Komori Yoshihiko
    Department of Applied Chemistry and Kagami Memorial Laboratory for Materials Science and Technology, Waseda University
  • Itagaki Tetsuro
    Department of Applied Chemistry and Kagami Memorial Laboratory for Materials Science and Technology, Waseda University
  • Sugahara Yoshiyuki
    Department of Applied Chemistry and Kagami Memorial Laboratory for Materials Science and Technology, Waseda University
  • Kuroda Kazuyuki
    Department of Applied Chemistry and Kagami Memorial Laboratory for Materials Science and Technology, Waseda University

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Abstract

A kaolinite–nylon 6 intercalation compound was prepared by the polymerization of 6-aminohexanoic acid (AHA) in the interlayer space of kaolinite. The intercalation of AHA was achieved by a guest displacement reaction using a kaolinite–methanol intercalation compound as an intermediate. After AHA dissolved in a mixed solvent of methanol and water (1 : 3) was added to a kaolinite–methanol intercalation compound, the mixture was stirred for 3 h. The basal spacing of the product increased to 1.23 nm, indicating the intercalation of AHA molecules with a monolayer arrangement between the layers of kaolinite. AHA was polymerized by a heat treatment at 250 °C for 1 h under a nitrogen flow. Although the basal spacing of the heat-treated product slightly decreased to 1.16 nm, the spacing was larger than those of kaolinite and the kaolinite–methanol intermediate. The formation of a kaolinite-nylon 6 intercalation compound was confirmed by the appearance of IR bands due to amide I (1637 cm−1) and amide II (1550 cm−1).

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