Characterization of the Cross-Linking Nylon-6,6 Blended Reactive Types of Flame Retardants with .GAMMA.-Ray Irradiation by Solid State NMR

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  • γ線架橋したナイロン‐６，６／反応性難燃剤コンポジットの固体ＮＭＲによるキャラクタリゼーション
  • γ線架橋したナイロン-6,6/反応性難燃剤コンポジットの固体NMRによるキャラクタリゼーション
  • ガンマセン カキョウ シタ ナイロン 6 6 ハンノウセイナンネンザイ コンポジット ノ コタイ NMR ニ ヨル キャラクタリゼーション

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Abstract

Novel cross-linkable flame retardants containing P and N atoms were synthesized and applied to nylon-6,6/cray nanocomposites. The quantity of the amorphous region of 13C CP/MAS spectra was increased after γ-ray irradiation. The spin-lattice relaxation times of nylon-6,6/cray nanocomposites after γ-ray irradiation also became longer than those before irradiation. The cross-linked structures seemed to be constructed in the nylon-6,6/cray nanocomposites by the γ-ray irradiation. We evaluated the degree of cross-linking in nylon-6,6/cray nanocomposites using two type of flame retardants by spin-lattice relaxation times. We also proved the cross-linked structure of the nylon-6,6 by comparing the spectra before irradiation with those after irradiation. The results suggested that the cross-linked structure was composed of methylene carbons near amide carbons. The opened double bond carbons of the cross-linkable flame retardants were connected to the nylon-6,6 methylene carbons.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 63 (12), 799-804, 2006

    The Society of Polymer Science, Japan

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