粘土-有機ナノコンポジット : カオリナイト-ポリビニルピロリドン層間化合物の合成

概要

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A kaolinite-poly (vinylpyrrolidone) intercalation compound has been prepared by the intercalation of an N-vinyl-2-pyrrolidone monomer (VP) and subsequent heat treatment. The intercalation of VP was achieved by treating a kaolinite-ammonium acetate intercalation compound with a VP aqueous solution. The basal spacing decreased from 14.2 to 12.6Å, and infra-red spectroscopy (IR) and solid-state 13^C nuclear magnetic resonance with cross polarization and magic angle spinning techniques (13^C CP/MAS NMR) showed the displacement of ammonium acetate by VP. When the kaolinite-VP intercalation compound was heated at 200℃ for 1 h, the basal spacing did not vary. The IR and 13^C CP/MAS NMR spectra showed the disappearance of vinyl groups and became similar to those of poly (vinylpyrrolidone) (PVP). These results clearly indicate the polymerization of VP between the layers of kaolinite.
社団法人日本セラミックス協会の論文
1992-04-01