Influence of Molecular Weight of Polyethylene Glycol on Its Effect as a Viscose Regeneration Retardant -Study on Spinning of the Viscose with Additives. III.-

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  • FUJIMOTO Akio
    Plastics Technical Center, Asahi Chemical Industry Co. Ltd Plastics Technical Center , Asahi Chemical Industry Co. Ltd.
  • HIRAI Hidefumi
    Plastics Technical Center, Asahi Chemical Industry Co. Ltd Department of Industrial Chemistry, Science University of Tokyo

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Other Title
  • ポリエチレングリコールのビスコース再生遅延作用におよぼず分子量の影響
  • Influence of molecular weight of polyethylene glycol on its effect as a viscose regeneration retardant.

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The influence of molecular weight of polyethylene glycol on its effect as a viscose regeneration retardant has been studied by spinning of the modified viscose containing 0.1 wt% of polyethylene glycol with molecular weight of 300 to 20000.<BR>The effect of molecular weight on the D-value, bon ded sulfur content, swelling degree and load/elongation curve of undrawn gel-fiber is maximal in a molecular weight range from 1500to 4000 (Figs.2 to 5). The change of polyethylene glycol content in the gel-fiber during spinning is determined. It is found that polyethylene glycol with molecular weight of 1500to 4000 remains longer and more in the gel-fiber (Table 2).<BR>Two chemical reactions of polyethylene glycol in acidic so lutions have been observed-precipitation reactions with tungustosilicic acid and with potassium hexacyanoferrate(II). Both precipitates are generated only in acidic solutions and the polyethylene glycol of lower molecular weight gives partly soluble, dense precipitates, while that of higher molecular weight forms immediately and efficiently bulk precipitates (Tables 3 and 4).<BR>The mechanism of the regeneration retardation by polyethylene glycol is discussed based on the experimental results.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1988 (7), 1106-1110, 1988-07-10

    The Chemical Society of Japan

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