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Volume 85, Issue 1
Displaying 1-6 of 6 articles from this issue
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Original Research Paper
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Keiichi SAKAMOTO, Naoki FURUYA, Hisashi SOGA2012 Volume 85 Issue 1 Pages 2-8
Published: January 20, 2012
Released on J-STAGE: March 23, 2012
JOURNAL FREE ACCESSPhthalocyanines have become of major interest as functional chromophore for dye sensitized solar cells. Absorption maxima of phthalocyanine is called Q band at around 650 nm, of which attributed to the highest occupied molecular orbital to the lowest unoccupied molecular orbital, π-π* transition. The Q band of phthalocyanines is able to move to longer wavelength through extension of π conjugation system. And then, it is reported that non-peripheral (1,4,8,11,15,18,22,25) position substituted phthalocyanine and high strain structural phthalocyanines were moved in the Q band to near-infrared region. Nonperipheral S-aryl substituted phthalocyanines showing near-infrared absorption were synthesized to develop new device for solar cells. The synthesized phthalocyanines were studied their spectroscopic and electrochemical properties.View full abstractDownload PDF (885K) -
Toshiyuki MASUI, Atsunori SHIRAISHI, Shinya FURUKAWA, WENDUSU, Naoyos ...2012 Volume 85 Issue 1 Pages 9-13
Published: January 20, 2012
Released on J-STAGE: March 23, 2012
JOURNAL FREE ACCESSCeO2-ZrO2-Bi2O3 yellow pigments were prepared by a citrate complex method and their color properties were characterized to evaluate their suitability as environmentally friendly inorganic pigments. CeO2-ZrO2-Bi2O3 yellow pigments strongly absorb visible light at wavelengths below 500 nm and consequently they are brilliant yellow in color. The most vivid yellow was obtained for Ce0.43Zr0.37Bi0.20O1.90, which had a yellowness value (b*) in the CIE L*a*b* system comparable to that of the commercially available praseodymium yellow pigment (ZrSiO4:Pr). The Ce0.43Zr0.37Bi0.20O1.90 pigment was used in paints for porcelain. We found that the medium yellow pigment (chuuki), which is one of the traditional colors of Arita ware but which contains lead and antimony, could be faithfully replicated without using these toxic elements.Fig. 6 Fullsize ImageView full abstractDownload PDF (2397K)
Current Topics
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Yuji YONEYAMA2012 Volume 85 Issue 1 Pages 14-18
Published: January 20, 2012
Released on J-STAGE: March 23, 2012
JOURNAL FREE ACCESSAfter the Tohoku earthquake in 2011, we take into consideration deeply about our environment. It is necessary to develop in future the product aimed at the energy saving and the resource saving. Laundry detergents have the long history that it supported to our life, and on the other hand, it related to environmental problems, for example foaming in river at 1960's, eutrophication at 1970's. Therefore, the laundry detergent in Japan has improved by solving positively these problems. In this article, the detergent technologies which have solved environmental problems by the introduction of biodegradable surfactant, the development of the non-phosphate detergent, and recent effort of preserving the environment with life cycle assessment (LCA) are explained.View full abstractDownload PDF (1154K)
Serial Lecture
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Daisuke MAEZAWA2012 Volume 85 Issue 1 Pages 19-26
Published: January 20, 2012
Released on J-STAGE: March 23, 2012
JOURNAL FREE ACCESSThe purpose of using organic colorants in cosmetics is to increase their value and to give an appropriate color to makeup products. We show here the items to which it is necessary to pay specific attention when using colorants in cosmetics. These are: (1)The kind of regulations that are in force in the specific market or country, (2)What kind of classification is adopted to have the Designated Colors specified, (3)Differences in naming of colorants for use in cosmetics and for general use, (4)Means by which safety can be verified, (5)The chemical and physical properties, (6)Hue tone wanted by each customer, (7)Potential problems likely to caused by the use of organic colorants.View full abstractDownload PDF (1008K)
Serial Lecture
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Masayuki NAGASHIMA, Kenichi HANAZONO2012 Volume 85 Issue 1 Pages 27-31
Published: January 20, 2012
Released on J-STAGE: March 23, 2012
JOURNAL FREE ACCESSIn this session, we will simply explain about the principle of gravure printing method, the feature of it in comparison to the other printing methods and the examples, applied to traditional field of manufacturing for better understanding of gravure printing method.
Furthermore, we will present the trend and future prospects of gravure printing methods which are expected to apply to new field like electronics one (called “Printable Electronics”).View full abstractDownload PDF (1057K)
Serial Lecture
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Minoru TSUBOTA2012 Volume 85 Issue 1 Pages 32-38
Published: January 20, 2012
Released on J-STAGE: March 23, 2012
JOURNAL FREE ACCESSCoating methods can be divided roughly into a direct shift method to the substrate and a spray method. Regardless of the liquid or the powder type, each paint forms the solid film by flowing in the coating process or drying process. In this paper, the base of the flow properties of paints were explained, and the analyzing methods of the yield value of paints and the shearing rate in the coating process were shown. In addition, it was shown that the contribution of the surface tension was large to the flow phenomena such as levelings and cissing.View full abstractDownload PDF (1564K)
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