Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
Search
Advanced search
OR
Browse
Search
Volume 56, Issue 12
Displaying 1-4 of 4 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Interaction between Solvents and PVC Particles and its Contribution to Dispersion Stability of PVC Organosol
    Shoichi TANAKA, Tadaaki SATOH
    1983 Volume 56 Issue 12 Pages 753-759
    Published: December 20, 1983
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.56.753
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Some studies were carried out to estimate the extent of influence of the interaction between the solvents and PVC particles on the dispersion stability of 23 types of PVC organosols using each different organic solvents.
    The results were as follows :
    1) PVC particles were dispersed in basic solvents, but were flocculated in acidic and neutral solvents.
    2) In particular, amphoteric solvent gave excellent dispersion stability, such as cellosolve.
    3) The dispersion stability of PVC particles depended on the interaction between the diluent solvent and the adsorbed solvent along with the interaction between the PVC and the adsorbed solvent on the particle surface.
    4) Possibly, the dispersion stability of PVC organosols can be discussed with citation of Sørensen's acid-base concept on pigment dispersion
    View full abstract
    Download PDF (1042K)
  • Identification of the Surface Group of Silica Gel and CVD-SiO2 Thin Film treated with Alcohols by Means of the X-Ray Photoelectron Spectroscopy
    Hiroshi UTSUGI, Atsushi ENDO, Noboru SUZUKI
    1983 Volume 56 Issue 12 Pages 760-764
    Published: December 20, 1983
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.56.760
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The surface structure of silica gel treated with 1, 4-butanediol (1) or of Chemically-Vapor-Deposited (CVD) SiO2 thin film treated with n-butanol (2) was investigated from their X-ray photoelectron spectra. These spectra showed that they were consisted of Si, O and C atom. The scanning photo-electron spectra of C1s, electron indicates the asymmetric broad band with the maximum at 1196. 4 eV for (1) and at 1197. 5 eV for (2), respectively. The spectrum for (1) was analysed into 3 component spectra with maxima at 1196, 1195 and 1193. 5 eV, respectively, in a near 2 : 1 : 1 peak intensity ratio. The spectrum for (2) was analysed into 2 component spectra with maxima at 1197. 5 and 1196. 4 eV, respectively, in a near 3 : 1 peak intensity ratio. Thus the surface group for (1) was perceived to be consisted of 3 different kinds of C atoms like SiOCH2|CH2CH2|CH2OH. Furthermore, the surface group for (2) was also perceived to be consisted of 2 different kinds of C atoms like SiOCH2|CH2CH2 CH3.
    View full abstract
    Download PDF (569K)
  • Catalytic Activity of Pigments (IV)
    Effects of Alkali Metal on Acidic Sites of Pigments
    Hiroshi FUKUI, Muneo TANAKA
    1983 Volume 56 Issue 12 Pages 765-771
    Published: December 20, 1983
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.56.765
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The effects of alkali metal carbonates on acidic sites of pigments for the dehydration of alcohol were studied by means of a pulse reactor method. Dehydration of alcohol decreased by the addition of alkali metal carbonate. It was correlated with the electron negativities or the ionic radius of the alkali metals.
    Dehydration of isopropyl alcohol over kaolinite was first order reaction and can be analyzed by Bassett equation. As a result, strength of acidic sites seems to be Boltzmann distribution and alkali metal inactivated the acidic sites in order of their strength.
    View full abstract
    Download PDF (806K)
  • List of Pigment Standards (JIS, ISO, DIN, BS, ASTM, NF)
    Keizo OHTA
    1983 Volume 56 Issue 12 Pages 772-781
    Published: December 20, 1983
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.56.772
    JOURNAL FREE ACCESS
    Download PDF (1096K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top