ポリマーグラフトカーボンブラック存在下におけるスチレンのカチオン重合性

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タイトル別名
  • Cationic polymerization of styrene initiated by stannic chloride in the presence of polymer-grafted carbon black.
  • ポリマー グラフト カーボン ブラック ソンザイカ ニ オケル スチレン ノ

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In the presence of polystyrene-grafted (CB-PS), poly- (methyl methacrylate) -grafted (CB-PMMA), polyester-grafted (CB-PEs), and poly (β-alanine) -grafted (CB-PAL) carbon black, the cationic polymerization of styrene initiated by stannic chloride was investigated. A marked retardation of the polymerization was observed in the presence of untreated carbon black depending on the reaction of growing polymer cation with oxygen containing group on carbon black. The retardation by carbon black did not disappear even if the oxygen containing groups on carbon black were blocked by the treatment with 2, 2′-azobisisobutyronitrile-diazomethane or with sodium borohydride. On the contrary, in the presence of the above polymer-grafted carbon black, the retardation by carbon black was weakened gradually with an increase in the grafting ratio of polymer. In particular, in the presence of CB-PAL (grafting ratio=205.8%), the retardation almost completely disappeared. These phenomenon suggests that the oxygen containing group and benzonoidal ring on the surface were blocked by the grafted polymer chains. The ability of grafted polymer chain for the blocking of the carbon black surface was found to increase in the following order: PS<PMMA<PEs_??_PAL. This order was in agreement with that of decreasing solubility of the grafted polymer chain in the solvent of the polymerization.

収録刊行物

  • 日本ゴム協会誌

    日本ゴム協会誌 60 (8), 476-481, 1987

    一般社団法人 日本ゴム協会

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