Interference with Chemical Crosslinking of Sulfated Polysaccharides by Sulfuric Acid Groups of Polysaccharide Chain

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  • Yasunaga Hidekazu
    Kyoto Institute of Technology, Department of Chemistry & Materials Technology, Kyoto, Sakyo-ku, Matugasaki Gosyokaido-tyo, 606-8585 Japan
  • Koga Rino
    Kyoto Institute of Technology, Department of Chemistry & Materials Technology, Kyoto, Sakyo-ku, Matugasaki Gosyokaido-tyo, 606-8585 Japan
  • Takano Ryo
    Okinawa National College of Technology, Department of Bioresources Engineering, Okinawa, Nago, Henoko 905, 905-2192 Japan
  • Kajiwara Kanji
    Otuma Women's University, Faculty of Home Economics, Tokyo, Tiyoda-ku, Sanban-tyo12, 102-8357 Japan
  • Urakawa Hiroshi
    Kyoto Institute of Technology, Department of Chemistry & Materials Technology, Kyoto, Sakyo-ku, Matugasaki Gosyokaido-tyo, 606-8585 Japan

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Description

The chemical crosslinking of funoran, a sulfated galactan, was attempted by using polyethylene glycol diglycidyl ethers in order to prepare a gel for using as a water-absorbing network polymer contained in disposable napkins. The funoran gel was not obtained under a series of crosslinking conditions. Other sulfated polysaccharides, such as Kappa-and Lambda-carrageenan, were not also crosslinked by the diglycidyl ethers, while agarose was chemically crosslinked to give its gel. Agarose has the same chemical main chain as funoran but has no sulfuric acid groups. The bulky sulfuric acid groups may intercept sterically the reaction between the hydroxyl groups and the glycidyl groups of the crosslinker.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 62 (12), 293-296, 2006

    The Society of Fiber Science and Technology, Japan

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