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 70, Issue 7
Displaying 1-7 of 7 articles from this issue
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  • Preparation of Barium (II) Copper (II) Binuclear Complex Particles and their Conversion into Composite Oxides
    Shuichi HAMADA, Yukihide SHIMODA, Yoshiyuki KUDO
    1997 Volume 70 Issue 7 Pages 427-436
    Published: July 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.427
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    Moderatesy uniform binuclear complex particles, N, N'-bis (3-carboxysalicylidene) -1, 2-ethanediaminobarium (II) copper (II) monohydrate, C18H12N2O6BaCu · H2O ; BaCu (fsaen) · H2O, were prepared by mixing a N, N'-bis (3-carboxysalicylidene) -1, 2-ethanediaminocopper (II) hemihydrate, Cu (H2fsaen) · 0.5H2O, solution and a barium (II) nitrate solution under the conditions of [Cu (H2fsaen)] t = 3.0×10-3 mol [13a2+] t/ [Cu (H2fsaen)] t= 1.0, and a methanol content of 75% by volume at 1°C. The latter starting mononuclear copper (II) complex was prepared through direct reaction of 3-formylsalicylic acid (H2fsa), 1, 2-ethanediamine (en), and copper (II) nitrate in a sodium carbonate solution. An average size of the binuclear complex particles was 4.8, μm with a relative standard deviation of 0.2. A molar ratio, n (Ba) /n (Cu), of the particles was estimated to be 0.974, which corresponded to an equimolar hetero metal complex. A yield of the resulting products was estimated to be 89%. Morphology and size of these complex particles depended on the concentrations of the mononuclear copper (II) complex and methanol in the mixed solution.. The binuclear complex particles were converted into composite barium (II) copper (II) oxide, BaCuO2, via γ-barium (II) carbonate and copper (II) oxide through calcination at 850°C for 3 h. Correlation between radii of the metal ions and bond length in the hetero metal complex was explained on the basis of the ligand molecule structure. Additionally, segregation of barium (II) ions at outermost layers of the composite oxide surface was discussed according to results of X-ray photoelectron spectrometry.
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  • Plasma Polymerization Coating of Tetraethoxysilane on Aluminum
    Tatsuhiko IHARA, Yu IRIYAMA, Seishiro ITO, Mitsuo KIBOKU
    1997 Volume 70 Issue 7 Pages 437-442
    Published: July 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.437
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    Tetraethoxysilane (TEOS) was polymerized by radio-frequency plasma and coated on aluminum for the purpose of corrosion protection. All plasma-coated films prevented aluminum from dissolving in alkaline solution remarkably. The corrosion resistance of the coated film was dependent on the plasma energy density (W/FM) : The coated film polymerized at higher W/FM showed better corrosion protection in spite of the thinner coated layer. From the results of XPS analysis, it was considered that the component of the film is gradually approaching to SiO2 by increasing W/FM. The coated layer was thin and transparent enough to retain metallic appearance even after the immersion in alkaline solutions.
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  • Adsorption of Celluloses on Titanium Dioxide with Hydrophobic Group
    Kunio ESUMI, Tomomi MIZUSAKI, Tsuneo SUHARA, Hiroshi FUKUI
    1997 Volume 70 Issue 7 Pages 443-448
    Published: July 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.443
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    Adsorption behavior of hydroxylpropylmethylcellulose (SH-50) and methylcelluloses (SM-25 and SM-100) on titanium dioxides with and without hydrophobic group was studied by measuring adsorbed amount of cellulose and dispersion stability. The adsorbed amount of these three celluloses on the titanium dioxide with hydrophobic group was considerably great as well as having a higher dispersion stability compared to that without the hydrophobic group. ESR measurements using spin-labeled celluloses showed that the ratio of train segments was decreased at low cellulose concentration and in particular, the ratio with adsorbed SH-50 on titanium dioxide without hydrophobic group was quite small. Thus, it was found that a high dispersion stability of titanium dioxide with hydrophobic group can be obtained due to steric hindrance of adsorbed layer with large adsorbed amount.
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  • Trend of Development in After-treatment for Electrogalvanized Steel Sheet
    Katsumi KANDA
    1997 Volume 70 Issue 7 Pages 449-459
    Published: July 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.449
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  • The Molecular Associations Applied to the Cosmetic Products
    Koichi UEDA
    1997 Volume 70 Issue 7 Pages 460-467
    Published: July 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.460
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  • Rheology of Suspensions
    Hiroshi WATANABE
    1997 Volume 70 Issue 7 Pages 468-475
    Published: July 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.468
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  • Water-Based Flexo and Gravure Ink
    Fusao HIGASHINAKA
    1997 Volume 70 Issue 7 Pages 476-484
    Published: July 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.476
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