アセチルセルロースの研究

DOI

書誌事項

タイトル別名
  • Study on Acetylcellulose
  • Sulfamic Acid, Ammonium Sulfamate, Hydroxylamine Sulfate as Catalyst of Acetylation
  • アセチル化触媒としてのスルファミン酸, スルファミン酸アンモン, 硫酸ヒドロキシルアミンについて

抄録

Cotton linter is immersed in acetic acid aqueous solutions (1: 1 vol.) of sulfamic acid (SA), ammonium sulfamate (AS), hydroxylamine sulfate (HS). The excess imbibitionacid is removed by suction and then the cellulose is acetylated with a mixture of acetic anhydride and diluent at 50-100°C.<BR>Under appropriate conditions, cotton linter impregnated with the catalyst is acetylated smoothly; for example, triacetyl cellulose can be obtained in the acetylation by acetic anhydride at 70°C for 2-5 minutes. The catalytic effectiveness of these compounds is as follows;HS≥SA>AS<BR>The acetylation reaction is accelerated by the addition of the diluents which have only a little affinity to these catalysts, since the dissolution of the catalysts into the acetylating bath is prevented.<BR>Effectiveness of the catalysts and the diluents to obtain the acetate with high degree of polymerization is as follows;HS>SA=AS, CH2Cl2+C2H5OH>none>C6H6≥CH3COOH.

収録刊行物

  • 高分子化學

    高分子化學 26 (291), 485-490, 1969

    公益社団法人 高分子学会

詳細情報 詳細情報について

  • CRID
    1390001206520132736
  • NII論文ID
    130004032808
  • DOI
    10.1295/koron1944.26.485
  • ISSN
    18848079
    00232556
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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