再構築法による乳酸塩/層状複水酸化物(LDH)の合成と剥離挙動

  • 奥平 賢二
    東京工業大学大学院理工学研究科材料工学専攻
  • 亀島 欣一
    東京工業大学大学院理工学研究科材料工学専攻 岡山大学大学院環境学研究科資源循環学専攻
  • 磯部 敏宏
    東京工業大学大学院理工学研究科材料工学専攻
  • 中島 章
    東京工業大学大学院理工学研究科材料工学専攻
  • 岡田 清
    東京工業大学大学院理工学研究科材料工学専攻

書誌事項

タイトル別名
  • Preparation and Delamination Behavior of Lactate / Layered Double Hydroxide (LDH) Composites Using Reconstruction Method

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抄録

The delamination behavior of a lactate/LDH composite prepared using the reconstruction method with a sodium lactate solution was investigated. The obtained composite showed that a strong peak around 2θ=11° that had been assigned as a basal reflection shifted slightly to lower angles: from 0.77 nm in starting LDH to 0.80 nm. This peak is assigned as a basal reflection of lactate-intercalated LDH (lactate/LDH). The interlayer distances of these diffractions were estimated about 0.32 nm, corresponding with the planate monomolecular state of lactate. Lactate contents of the obtained composites were 50–80 % against the anion exchange capacity of starting LDH, corresponding to increased concentrations of the reacted solutions. The XRD patterns of the gelated samples revealed no diffraction peak, but the XRD patterns of the casting sample after 80 °C drying exhibited diffraction peaks just as the as-received lactate/LDH composite did. The obtained lactate/LDH composite has new function of delamination and restacking. The obtained composite's delaminated size was 4–8 nm thick and 50–150 nm wide. Finally, the obtained lactate/LDH composite showed reversible delamination and smectite-like restacking functions.

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  • 色材協会誌

    色材協会誌 84 (1), 2-6, 2010

    一般社団法人 色材協会

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