STUDY OF OXYCELLULOSE

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Bibliographic Information

Other Title
  • 酸化セルロースの研究
  • (2) OXIDATION OF CELLULOSE WITH TERTIARY BUTYL CHROMATE
  • 第2報　クロム酸第三ブチルによるセルロースの酸化

Abstract

Purified linter was oxidized with tert-butyl chromate in benzene with AcOH and Ac2O, and both crystalline cellulose I and amorphous cellulose II were oxidized with this neutral oxidant in CCl4. Acidic oxidation produced mainly carboxyl group to 150m moles, and 50m moles of aldehyde and 4-5m moles of ketone per 100g linter. This reaction was too drastic to investigate the oxidation of crystalline and amorphous cellulose at an early stage. In crystalline cellulose I, neutral oxidation produced 16m moles of aldehyde group, 7.5m moles of carboxyl and little ketone and it produced no change in crystal lattice and crystallinity obtained by means of X-ray diffraction, while in amorphous cellulose II, oxidation occurred even at 0°C, and 9m moles of ketone group which was not seen in cellulose I, 6m moles of aldehyde, and little carboxyl were produced, and besides appreciable degradation was observed from the figures of yield and X-ray diffraction. Alcohol group in C2 and C3 were oxidized to ketone, too.<br>In general, neutral tert-butyl chromate oxidizes cellulose heterogeneously; in crystal region oxidation of primary alcohol group to aldehyde in C6, successively followed by the oxidation to carboxyl, mainly occurs, and in addition oxidation of secondary alcohol in C2 and C3 to ketone and considerable amounts of oxidative degradation of molecules in amorphous region occur. Acidic oxidation is so drastic that many oxidized groups are produced.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 21 (7), 380-385, 1965

    The Society of Fiber Science and Technology, Japan

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