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 82, Issue 4
Displaying 1-6 of 6 articles from this issue
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Original Research Paper
  • Synthesis and Characterization of Poly(phenylacetylene)s Having Steroid Compounds in the Side Chain
    Masatoshi NAKAYAMA, Yousuke KOBAYASHI, Hiroaki KOUZAI
    2009 Volume 82 Issue 4 Pages 141-144
    Published: April 20, 2009
    Released on J-STAGE: July 20, 2009
    DOIhttps://doi.org/10.4011/shikizai.82.141
    JOURNAL FREE ACCESS
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    Novel monosubsituted acetylenes with steroid moiety and their polymers with a Rh complex catalyst, [Rh (norbornadiene) Cl]2 were synthesized. The polymers were obtained in relatively high yields. Their relative weight-average molecular weights determined by GPC were in the range of 1.1×105∼3.3×105. All polymers were soluble in organic solvents such as toluene, chloroform and THF. It was found that the steric structure of the polymers was dependent on the bulkiness and the optical activity of steroid compounds incorporated as substituents. Since the optical rotation was maintained at high value in various solvents and temperatures, the steric structure of the polymers was assumed to be stabilized by the steric repulsion.
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Integrated Research Paper
  • A Study on Synthesis of Polyesteramide and its Application to Coating Materials
    Sukhen MISTRY, Devendra AGARWAL
    2009 Volume 82 Issue 4 Pages 145-150
    Published: April 20, 2009
    Released on J-STAGE: July 20, 2009
    DOIhttps://doi.org/10.4011/shikizai.82.145
    JOURNAL FREE ACCESS
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    In the present research work, thermosetting polyesteramide coatings were prepared to overcome the major drawback of conventional melamine cured coatings viz. high VOC emission, by reacting acrylic copolymer and hydroxy ethyl fatty amide (HEMA). Acrylic copolymer was synthesized using methyl methacrylate and maleic anhydride as monomers in xylene and benzoyl peroxide (BPO) as initiator. The copolymer and HEFA were characterized by Fourier Transform Infrared (FTIR). A series of compositions having varying amount of acrylic copolymer and hydroxyl ethyl fatty amide were prepared to form the polyesteramide coatings and their thermal properties were studied by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetery (DSC). The coating films were baked at 155°C for 30 minutes to effect film cure. Cured films were evaluated for their optical, mechanical and chemical resistance properties to ascertain the commercial utility in the field of surface coating.
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Review
Current Topics
Serial Lecture
  • Nanotechnology : A Current Perspective
    Hiroshi YOKOYAMA
    2009 Volume 82 Issue 4 Pages 171-177
    Published: April 20, 2009
    Released on J-STAGE: July 20, 2009
    DOIhttps://doi.org/10.4011/shikizai.82.171
    JOURNAL FREE ACCESS
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    Nanotechnology is becoming an even more significant driver of all aspects of materials science and its application to industrial technologies. The purpose of this article is to give a brief account of the history and global science and technology policy of nanotechnology, and to present the attractive values and future possibilities of nanotechnology in relation to nano-materials with relevance to color phenomena. The role of nanotechnology is not only to contribute to the development of industrial society and the betterment of medical technologies, but also to respond to novel issues of food safety and alternative energy sources that entail solutions based on the development of science and technology.
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