Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
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Volume 50, Issue 12
Displaying 1-4 of 4 articles from this issue
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  • Studies on Preparation of Inorganic Powders by Interfacial Reaction Method (IX)
    Some Properties of Hydrated Ferric Oxide-Cobalt Carbonate Spherical Particles
    Kenichi MIYATA, Yoshiko NAKAHARA
    1977 Volume 50 Issue 12 Pages 668-673
    Published: December 20, 1977
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.50.668
    JOURNAL FREE ACCESS
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    The spherical particles composed of cobalt carbonate and hydrated ferric oxide were prepared by the interfacial reaction method, in which the cobalt carbonate and the ferric oxide were formed by the reaction of mixture of aqueous solutions of cobalt sulfate and ferrous sulfate emulsified in benzene with sodium bicarbonate aqueous solution.
    The X-ray diffraction, the water vapor adsorption, the differential thermal analysis, and the particle size distribution were measured for the cobalt carbonate-hydrated ferric oxide powder. The crystal structure of the heat-treated powder and the reduced powder also examined by the X-ray diffraction method.
    From the results, it was concluded that the spherical particles composed of cobalt carbonate and hydrated ferric oxide were composites of spherocobaltite micro crystal and amorphous hydrated ferric oxide, and were highly porous similar to the spherical particles of cobalt carbonate or hydrated ferric oxide, both of which were prepared by the interfacial reaction method. It was also found that the spherical particles of cobalt ferrite or cobalt-iron alloy were formed by heat-treating or reducing the hydrated ferric oxide-cobalt carbonate spherical particles at high temperature, respectively.
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  • Studies on Resistance of Coloured Plastics to Weathering (II)
    Some Rules on Changes in Colour of Coloured Plastics after Outdoor Weathering
    Kiyoji YOSHIKAWA, Yoshio SUDA, Tadashi SHIROTA, Akira YAHAGI, Yoshio A ...
    1977 Volume 50 Issue 12 Pages 674-680
    Published: December 20, 1977
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.50.674
    JOURNAL FREE ACCESS
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  • Physical Chemistry of Dispersions
    Effect of Surface Charge and Adsorbed Layer on Dispersibility of Pigments
    Ayao KITAHARA
    1977 Volume 50 Issue 12 Pages 681-690
    Published: December 20, 1977
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.50.681
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1977 Volume 50 Issue 12 Pages 691-748
    Published: December 20, 1977
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.50.691
    JOURNAL FREE ACCESS
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