セルロースの二酸化窒素酸化反応

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タイトル別名
  • OXIDATION REACTION OF CELLULOSE WITH NITROGEN DIOXIDE

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Crystalline cellulose I (CI) and amorphous cellulose II (CII) samples were treated with two kinds of NO2 which had been prepared by dry distillation of lead nitrate (P-NO2) and by reduction of nitric acid with arsenic trioxide (A-NO2). The oxidation mechanism of cellulose with NO2 was considered on the basis of changes in the contents of the functional groups and in the fine structures.<br>CII sample was more easily oxidized and nitrated with NO2 that the CI sample.<br>When a small amount of H20 was mixed with NO2, the extent of oxidation decreased, and the nitration increased.<br>On reacting with NO2, the ratios of Ic=o/INO2 of the products increased initially, and became constant after 7hrs. The constant values of CI and CII samples oxidized with P-NO2 were 2.5 and 4 times greater than those of CI and CII samples oxidized with A-NO2, respectively.<br>The results of x-ray diffraction and deuteration indicated that the reaction of cellulose with NO2 proceeded rapidly at first in the amorphous region and then slowly in the crystalline regions, and that the reaction of P-NO2 was more homogeneous than that of A-NO2.

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  • 繊維学会誌

    繊維学会誌 29 (7), T280-T284, 1973

    社団法人 繊維学会

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