RADIATION-INDUCED GRAFTING OF ACRYLAMIDE ONTO POLY (VINYL CHLORIDE) FIBER

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  • Kaji Kanako
    Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute
  • Okada Toshio
    Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute
  • Sakurada Ichiro
    Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute

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Other Title
  • ポリ塩化ビニル繊維へのアクリルアミドの放射線グラフト重合
  • ポリ エンカ ビニル センイ エ ノ アクリルアミド ノ ホウシャセン グラフ

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Description

Radiation-grafting of acrylamide was carried out onto poly (vinyl chloride) fiber to raise its softening temperature without serious loss of the flame-retardance.<br>Grafting of acrylamide proceeded when mixture of the monomer, methanol and ethylene dichloride was used as grafting solution. Small amount of iron (II) chloride was added to the mixture to suppress formation of acrylamide homopolymer outside the fiber. The grafting was studied over a very wide dose rate range using γ-rays from a Co-60 source, electron beams from a Van de Graaff, and a transformer type accelerators. The log-log plot of the rate of grafting and the dose rate was expressed by a straight line with a slope of 0.76 over a range 1 to 1×107 rad/sec.<br>Only very small changes in strength, elongation and Young's modulus of fibers are observed by the grafting of up to 56%. Fibers of about 50% graft exhibited nearly the same moisture regain as that of cotton. Acrylamide-grafted fiber showed a high heat-shrinkage temperature especially when subjected to alkali-hydrolysis and cross-linked with calcium ion by treatment with aqueous solution of calcium acetate. Fiber of about 60% graft was still self-extinguishable.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 33 (10), T488-T494, 1977

    The Society of Fiber Science and Technology, Japan

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