Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
Volume 71 , Issue 2
Showing 1-7 articles out of 7 articles from the selected issue
  • Eiko OHNO, Keiichi SAKAMOTO
    1998 Volume 71 Issue 2 Pages 83-90
    Published: February 20, 1998
    Released: November 20, 2012
    JOURNALS FREE ACCESS
    Metal phthalocyanine derivatives exhibit highly redox properties. However, there are few reports on practical applications using their redox ability. The purpose of this study is the utilization of the redox properties of metal phthalocyanine derivatives. To achieve the purpose, we prepared redox resins which synthesized metal phthalocyanine tetrasulfonic acids were fixed onto ion-exchange resins. Fixation of metal phthalocyanine tetrasulfonic acids onto ion-exchange resin was found to be the Freundlich type. The redox ability of the resins were examined in the reaction between metal phthalocyanine tetrasulfonic acid fixed ion-exchange resin and hydrogen, peroxide. The ability we found to be different depending on the central metal in metal phthalocyanine tetrasulfonic acid.
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  • H. ANDO, S. KATAOKA, M. KUWATA, Y. SAEKI, M. MIZUTANI, M. SUGITA
    1998 Volume 71 Issue 2 Pages 91-99
    Published: February 20, 1998
    Released: November 20, 2012
    JOURNALS FREE ACCESS
    For a functionalization of leather, low temperature plasma treatment for leather was carried out with tetrafluoromethane (CF4), hexafluoroethane (C2F6) and perfluoropropane (C3F8). Plasma-treated leather surfaces were analyzed with XPS and FT-IR and the quantitative analysis of fluorine content in leather was done by a colorimetry. Fluorine content was also measured in leather and in extracted water after the water extraction test. In those analysis, fluorocarbon polymer was detected on leather surface treated with each fluorocarbon gas plasma.
    The fluorine content in leather increased with plasma treatment time, and the distribution of fluorine content in leather varied with fluorocarbon gas. In the water extraction test, the fluorine content in CF4 treated leather decreased gradually with extraction time, but the decrease stopped after 25-50h of the extraction for C2F6 and C3F8 treated leather. The fungal resistance was increased in all fluorocarbon plasma treated leather even after the water extraction test.
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  • Manabu AKAZAWA, Keiji MINAMIHASHI, Mitsunobu IWASAKI, Hiroaki TADA, Se ...
    1998 Volume 71 Issue 2 Pages 100-103
    Published: February 20, 1998
    Released: November 20, 2012
    JOURNALS FREE ACCESS
    Polystyrene particles with an average diameter of 15gm were uniformly coated with a SiO2 thin film. Prior to the coating, the surface of polystyrene was activated by oxygen-microwaveplasma treatment. After the particles were dispersed into an ethanol solution of tetraethoxysilane with a small amount of NH3 water as a base catalyst, a 3 hoars' stirring at room temperatu re accomplished the sol-gel SiO2 coating. XPS spectra of the particles treated with oxygen-microwave plasma indicated the introduction of polar groups such as hydroxyl and carboxyl ones on the surface. In diffuse reflectance FT-IR spectra of the particle finally obtained, two absorption peaks assigned to Si-O-Si and Si-OH stretching vibrations were observed at 1100 and 950cm-1, respectively. EPMA and TEM analyses of the cross section of the particle clearly demonstrated that the polystyrene particles with oxygen-plasma pretreatment were homogeneously covered with a SiO2 film having a thickness of ca. 120 nm, while the particles without pretreatment were heterogeneously covered with SiO2 particles.
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  • Yoshio OKI
    1998 Volume 71 Issue 2 Pages 104-112
    Published: February 20, 1998
    Released: November 20, 2012
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  • Hiroshi TAODA
    1998 Volume 71 Issue 2 Pages 113-120
    Published: February 20, 1998
    Released: November 20, 2012
    JOURNALS FREE ACCESS
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  • Naoyuki KISHI
    1998 Volume 71 Issue 2 Pages 121-129
    Published: February 20, 1998
    Released: November 20, 2012
    JOURNALS FREE ACCESS
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  • Masayuki OSUMI
    1998 Volume 71 Issue 2 Pages 130-141
    Published: February 20, 1998
    Released: November 20, 2012
    JOURNALS FREE ACCESS
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