Mechanochemical Copolymerization of Poly (vinyl alcohol) and Methyl Methacrylate by Ultrasonic Irradiation

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  • FUJIWARA Hideki
    Department of Applied Chemistry, Osaka Institute of Technology
  • GOTO Kunio
    Department of Applied Chemistry, Osaka Institute of Technology

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Other Title
  • 超音波照射によるポリマーのメカノケミカル反応　ＶＩＩ　　超音波照射によるポリビニルアルコールとメタクリル酸メチルとのメカノケミカル共重合
  • チョウオンパ ショウシャ ニ ヨル ポリビニルアルコール ト メタクリルサン

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Abstract

Mechanochemical block copolymerization in suspensions of poly (vinyl alcohol), methyl methacrylate, and distilled water was carried out using poly (vinyl alcohol) with the initial viscosity-averaged chain length 2, 500 on ultrasonic irradiation at 60°C. Either in the absence of poly (vinyl alcohol) or in the presence of poly (vinyl alcohol) with the initial chain length 500, the polymerization of methyl methacrylate did not occur on ultrasonic irradiation. The copolymerization was inhibited completely by 2, 2-diphenyl-1-picrylhydrazyl. The initial rate of mechanochemical copolymerization Rp was given by Rp∝ [PVA]2 [MMA] . A block copolymer having the vinyl alcohol and methyl methacrylate segments in a ratio of 6 : 4 was produced.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 41 (3), 133-138, 1984

    The Society of Polymer Science, Japan

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