STUDIES OF OXYCELLULOSE

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Other Title
  • 酸化セルロースの研究
  • (7) EFFECT OF H<sub>2</sub>O<sub>2</sub>-OXYCELLULOSE ON PAPER MAKING
  • 第7報　過酸化水素酸化セルロースの製紙におよぼす影響

Abstract

Three oxycelluloses were obtained by oxidizing purified linter with an acidic solution of H2O2 at room temperature. They contained (3.9, 0.9, 1.8), (8.0, 4.5, 8.5) and (18.8, 7.5, 8.6) m mole of aldehyde, carboxyl and ketone groups per 100g sample, respectively. These oxycelluloses and purified linter were beaten and sheeted after various amounts of rosin, Kaoline and Al2(SO4)3 were added.<br>Beating does not change oxidized group contents, Cu values, alkali solubilities and the crystallinities of the samples. The rate of beating of the slightly oxidized samples is faster than that of the purified linter, but that of the higher oxidized samples decreases with increase in the amounts of oxidized groups.<br>Considering specific external surafce and degree of swelling, it is deduced that the external and internal fibrillation are gradually increased by beating and by the increase in the amounts of oxidized groups. This latter behavior of this oxycellulose is contrary to NO2-, NaIO4-, K2Cr2O7- and NaClO-oxycelluloses.<br>Moderate oxidation with H2O2 and the beating result in the increase of entanglement of the fibers, the transparencies, the mechanical strength and the whiteness of the papers, in which H2O2 oxidation is superior to oxidation with other reagents.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 23 (5), 208-212, 1967

    The Society of Fiber Science and Technology, Japan

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