高度吸水性材料としての架橋硫酸セルロースナトリウム

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タイトル別名
  • Crosslinked Sodium Cellulose Sulfate as a Highly Absorbent Material.
  • コウド キュウスイセイ ザイリョウ トシテノ カキョウ リュウサン セルロース

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For the purpose of developing materials with high absorbency for electrolyte solutions, cellulose sulfate prepared by homogeneous reaction of dis-solving pulp with sulfur trioxide was reacted with glutaraldehyde in N, N-dimethylformamide and then neutralized with a aqueous sodium hydroxide to give crosslinked sodium cellulose sulfate (CCS). In the crosslinking reaction, the degree of substitution (DS) of the cellulose sulfate decreased markedly with the reaction time. The CCS showed a high absorbency in deionized water (1000 times as much as its own weight) in spite of its low DS of 0.2. Thus the absorbency toward deionized water was more influenced by change in degree of crosslinking than that in DS. In 0.9wt% sodium chloride aqueous solution, the absorbency of the CCS was about 80 times of its own weight, corresponding to that of commercial crosslinked poly (sodium carboxylate)-type absorbents. In this case, the absorbency was more influenced by change in DS than that in degree of crosslinking. This result suggests that the CCS with higher DS values results in higher absorbency in aqueous electrolyte solutions.

収録刊行物

  • 繊維学会誌

    繊維学会誌 49 (9), 482-485, 1993

    社団法人 繊維学会

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